【代码重构】工作流：BpmTaskCandidateStrategy 拆分成 calculateUsers、calculateUsersByTask、calcu…

…lateUsersByActivity，定位更明确

【代码重构】工作流：BpmTaskCandidateStrategy 拆分成 calculateUsers、calculateUsersByTask、calcu…
…lateUsersByActivity，定位更明确
YunaiV
1 parent 0c7fd9e1
Showing 40 changed files with 759 additions and 345 deletions
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/definition/BpmProcessDefinitionController.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/convert/task/BpmProcessInstanceConvert.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/behavior/BpmParallelMultiInstanceBehavior.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/behavior/BpmSequentialMultiInstanceBehavior.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/behavior/BpmUserTaskActivityBehavior.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/candidate/BpmTaskCandidateInvoker.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/candidate/BpmTaskCandidateStrategy.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/candidate/strategy/BpmTaskCandidateAbstractStrategy.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/listener/BpmCopyTaskDelegate.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/util/BpmnModelUtils.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/util/FlowableUtils.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmProcessInstanceServiceImpl.java
yudao-module-bpm/yudao-module-bpm-biz/src/test/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/candidate/BpmTaskCandidateInvokerTest.java
yudao-module-bpm/yudao-module-bpm-biz/src/test/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/candidate/strategy/dept/BpmTaskCandidateDeptLeaderMultiStrategyTest.java
yudao-module-bpm/yudao-module-bpm-biz/src/test/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/candidate/strategy/dept/BpmTaskCandidateStartUserDeptLeaderMultiStrategyTest.java
yudao-module-bpm/yudao-module-bpm-biz/src/test/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/candidate/strategy/dept/BpmTaskCandidateStartUserDeptLeaderStrategyTest.java
yudao-module-bpm/yudao-module-bpm-biz/src/test/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/candidate/strategy/dept/BpmTaskCandidateStartUserSelectStrategyTest.java
yudao-module-bpm/yudao-module-bpm-biz/src/test/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/candidate/strategy/other/BpmTaskCandidateAssignEmptyStrategyTest.java
yudao-module-bpm/yudao-module-bpm-biz/src/test/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/candidate/strategy/user/BpmTaskCandidateStartUserStrategyTest.java
@@ -9,7 +9,7 @@ import cn.iocoder.yudao.module.bpm.convert.definition.BpmProcessDefinitionConver
 import cn.iocoder.yudao.module.bpm.dal.dataobject.definition.BpmCategoryDO;
 import cn.iocoder.yudao.module.bpm.dal.dataobject.definition.BpmFormDO;
 import cn.iocoder.yudao.module.bpm.dal.dataobject.definition.BpmProcessDefinitionInfoDO;
-import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.BpmTaskCandidateStartUserSelectStrategy;
+import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.dept.BpmTaskCandidateStartUserSelectStrategy;
 import cn.iocoder.yudao.module.bpm.service.definition.BpmCategoryService;
 import cn.iocoder.yudao.module.bpm.service.definition.BpmFormService;
 import cn.iocoder.yudao.module.bpm.service.definition.BpmProcessDefinitionService;
@@ -17,7 +17,7 @@ import cn.iocoder.yudao.module.bpm.convert.definition.BpmProcessDefinitionConver
 import cn.iocoder.yudao.module.bpm.dal.dataobject.definition.BpmCategoryDO;
 import cn.iocoder.yudao.module.bpm.dal.dataobject.definition.BpmProcessDefinitionInfoDO;
 import cn.iocoder.yudao.module.bpm.event.BpmProcessInstanceStatusEvent;
-import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.BpmTaskCandidateStartUserSelectStrategy;
+import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.dept.BpmTaskCandidateStartUserSelectStrategy;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.BpmnModelUtils;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.FlowableUtils;
 import cn.iocoder.yudao.module.bpm.service.message.dto.BpmMessageSendWhenProcessInstanceApproveReqDTO;
@@ -53,7 +53,7 @@ public class BpmParallelMultiInstanceBehavior extends ParallelMultiInstanceBehav
         @SuppressWarnings("unchecked")
         Set<Long> assigneeUserIds = (Set<Long>) execution.getVariable(super.collectionVariable, Set.class);
         if (assigneeUserIds == null) {
-            assigneeUserIds = taskCandidateInvoker.calculateUsers(execution);
+            assigneeUserIds = taskCandidateInvoker.calculateUsersByTask(execution);
             execution.setVariable(super.collectionVariable, assigneeUserIds);
             if (CollUtil.isEmpty(assigneeUserIds)) {
                 // 特殊：如果没有处理人的情况下，至少有一个 null 空元素，避免自动通过！
@@ -46,7 +46,7 @@ public class BpmSequentialMultiInstanceBehavior extends SequentialMultiInstanceB
         @SuppressWarnings("unchecked")
         Set<Long> assigneeUserIds = (Set<Long>) execution.getVariable(super.collectionVariable, Set.class);
         if (assigneeUserIds == null) {
-            assigneeUserIds = taskCandidateInvoker.calculateUsers(execution);
+            assigneeUserIds = taskCandidateInvoker.calculateUsersByTask(execution);
             execution.setVariable(super.collectionVariable, assigneeUserIds);
             if (CollUtil.isEmpty(assigneeUserIds)) {
                 // 特殊：如果没有处理人的情况下，至少有一个 null 空元素，避免自动通过！
@@ -57,7 +57,7 @@ public class BpmUserTaskActivityBehavior extends UserTaskActivityBehavior {
         // 情况二，如果非多实例的任务，则计算任务处理人
         // 第一步，先计算可处理该任务的处理人们
-        Set<Long> candidateUserIds = taskCandidateInvoker.calculateUsers(execution);
+        Set<Long> candidateUserIds = taskCandidateInvoker.calculateUsersByTask(execution);
         if (CollUtil.isEmpty(candidateUserIds)) {
             return null;
         }
@@ -18,6 +18,7 @@ import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
 import com.google.common.annotations.VisibleForTesting;
 import lombok.extern.slf4j.Slf4j;
 import org.flowable.bpmn.model.BpmnModel;
+import org.flowable.bpmn.model.FlowElement;
 import org.flowable.bpmn.model.UserTask;
 import org.flowable.engine.delegate.DelegateExecution;
 import org.flowable.engine.runtime.ProcessInstance;
@@ -89,31 +90,66 @@ public class BpmTaskCandidateInvoker {
      * @return 用户编号集合
      */
     @DataPermission(enable = false) // 忽略数据权限，避免因为过滤，导致找不到候选人
-    public Set<Long> calculateUsers(DelegateExecution execution) {
+    public Set<Long> calculateUsersByTask(DelegateExecution execution) {
         // 审批类型非人工审核时，不进行计算候选人。原因是：后续会自动通过、不通过
-        Integer approveType = BpmnModelUtils.parseApproveType(execution.getCurrentFlowElement());
+        FlowElement flowElement = execution.getCurrentFlowElement();
+        Integer approveType = BpmnModelUtils.parseApproveType(flowElement);
         if (ObjectUtils.equalsAny(approveType,
                 BpmUserTaskApproveTypeEnum.AUTO_APPROVE.getType(),
                 BpmUserTaskApproveTypeEnum.AUTO_REJECT.getType())) {
             return new HashSet<>();
         }
-        Integer strategy = BpmnModelUtils.parseCandidateStrategy(execution.getCurrentFlowElement());
-        String param = BpmnModelUtils.parseCandidateParam(execution.getCurrentFlowElement());
+        Integer strategy = BpmnModelUtils.parseCandidateStrategy(flowElement);
+        String param = BpmnModelUtils.parseCandidateParam(flowElement);
         // 1.1 计算任务的候选人
-        Set<Long> userIds = getCandidateStrategy(strategy).calculateUsers(execution, param);
-        // 1.2 移除被禁用的用户 TODO @芋艿 在 calculateUsers 方法中默认已经移除了被禁用的用户, 这里还需要移除被禁用的用户吗?
+        Set<Long> userIds = getCandidateStrategy(strategy).calculateUsersByTask(execution, param);
+        // 1.2 移除被禁用的用户
         removeDisableUsers(userIds);
         // 2. 候选人为空时，根据“审批人为空”的配置补充
         if (CollUtil.isEmpty(userIds)) {
             userIds = getCandidateStrategy(BpmTaskCandidateStrategyEnum.ASSIGN_EMPTY.getStrategy())
-                    .calculateUsers(execution, param);
+                    .calculateUsersByTask(execution, param);
             // ASSIGN_EMPTY 策略，不需要移除被禁用的用户。原因是，再移除，可能会出现更没审批人了！！！
         }
         // 3. 移除发起人的用户
-        removeStartUserIfSkip(execution, userIds);
+        ProcessInstance processInstance = SpringUtil.getBean(BpmProcessInstanceService.class)
+                .getProcessInstance(execution.getProcessInstanceId());
+        Assert.notNull(processInstance, "流程实例({}) 不存在", execution.getProcessInstanceId());
+        removeStartUserIfSkip(userIds, flowElement, Long.valueOf(processInstance.getStartUserId()));
+        return userIds;
+    }
+
+    public Set<Long> calculateUsersByActivity(BpmnModel bpmnModel, String activityId,
+                                              Long startUserId, String processDefinitionId, Map<String, Object> processVariables) {
+        // 审批类型非人工审核时，不进行计算候选人。原因是：后续会自动通过、不通过
+        FlowElement flowElement = BpmnModelUtils.getFlowElementById(bpmnModel, activityId);
+        Integer approveType = BpmnModelUtils.parseApproveType(flowElement);
+        if (ObjectUtils.equalsAny(approveType,
+                BpmUserTaskApproveTypeEnum.AUTO_APPROVE.getType(),
+                BpmUserTaskApproveTypeEnum.AUTO_REJECT.getType())) {
+            return new HashSet<>();
+        }
+
+        Integer strategy = BpmnModelUtils.parseCandidateStrategy(flowElement);
+        String param = BpmnModelUtils.parseCandidateParam(flowElement);
+        // 1.1 计算任务的候选人
+        Set<Long> userIds = getCandidateStrategy(strategy).calculateUsersByActivity(bpmnModel, activityId, param,
+                startUserId, processDefinitionId, processVariables);
+        // 1.2 移除被禁用的用户
+        removeDisableUsers(userIds);
+
+        // 2. 候选人为空时，根据“审批人为空”的配置补充
+        if (CollUtil.isEmpty(userIds)) {
+            userIds = getCandidateStrategy(BpmTaskCandidateStrategyEnum.ASSIGN_EMPTY.getStrategy())
+                    .calculateUsersByActivity(bpmnModel, activityId, param, startUserId, processDefinitionId, processVariables);
+            // ASSIGN_EMPTY 策略，不需要移除被禁用的用户。原因是，再移除，可能会出现更没审批人了！！！
+        }
+
+        // 3. 移除发起人的用户
+        removeStartUserIfSkip(userIds, flowElement, startUserId);
         return userIds;
     }
@@ -134,25 +170,23 @@ public class BpmTaskCandidateInvoker {
      *
      * 注意：如果只有一个候选人，则不处理，避免无法审批
      *
-     * @param execution 执行中的任务
      * @param assigneeUserIds 当前分配的候选人
+     * @param flowElement 当前节点
+     * @param startUserId 发起人
      */
     @VisibleForTesting
-    void removeStartUserIfSkip(DelegateExecution execution, Set<Long> assigneeUserIds) {
+    void removeStartUserIfSkip(Set<Long> assigneeUserIds, FlowElement flowElement, Long startUserId) {
         if (CollUtil.size(assigneeUserIds) <= 1) {
             return;
         }
-        Integer assignStartUserHandlerType = BpmnModelUtils.parseAssignStartUserHandlerType(execution.getCurrentFlowElement());
+        Integer assignStartUserHandlerType = BpmnModelUtils.parseAssignStartUserHandlerType(flowElement);
         if (ObjectUtil.notEqual(assignStartUserHandlerType, BpmUserTaskAssignStartUserHandlerTypeEnum.SKIP.getType())) {
             return;
         }
-        ProcessInstance processInstance = SpringUtil.getBean(BpmProcessInstanceService.class)
-                .getProcessInstance(execution.getProcessInstanceId());
-        Assert.notNull(processInstance, "流程实例({}) 不存在", execution.getProcessInstanceId());
-        assigneeUserIds.remove(Long.valueOf(processInstance.getStartUserId()));
+        assigneeUserIds.remove(startUserId);
     }
-    public BpmTaskCandidateStrategy getCandidateStrategy(Integer strategy) {
+    private BpmTaskCandidateStrategy getCandidateStrategy(Integer strategy) {
         BpmTaskCandidateStrategyEnum strategyEnum = BpmTaskCandidateStrategyEnum.valueOf(strategy);
         Assert.notNull(strategyEnum, "策略(%s) 不存在", strategy);
         BpmTaskCandidateStrategy strategyObj = strategyMap.get(strategyEnum);
 package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmTaskCandidateStrategyEnum;
+import org.flowable.bpmn.model.BpmnModel;
 import org.flowable.engine.delegate.DelegateExecution;
-import org.flowable.engine.runtime.ProcessInstance;
-import java.util.Collections;
+import java.util.Map;
 import java.util.Set;
 /**
@@ -42,47 +42,44 @@ public interface BpmTaskCandidateStrategy {
     /**
      * 基于候选人参数，获得任务的候选用户们
      *
+     * 注意：实现 calculateUsers 系列方法时，有两种选择：
+     * 1. 只重写 calculateUsers 默认方法
+     * 2. 都重写 calculateUsersByTask 和 calculateUsersByActivity 两个方法
+     *
      * @param param 执行任务
      * @return 用户编号集合
      */
     default Set<Long> calculateUsers(String param) {
-        return Collections.emptySet();
+        throw new UnsupportedOperationException("该分配方法未实现，请检查！");
     }
     /**
-     * 基于执行任务，获得任务的候选用户们
+     * 基于【执行任务】，获得任务的候选用户们
      *
      * @param execution 执行任务
      * @return 用户编号集合
      */
-    default Set<Long> calculateUsers(DelegateExecution execution, String param) {
-        Set<Long> users = calculateUsers(param);
-        removeDisableUsers(users);
-        return users;
+    default Set<Long> calculateUsersByTask(DelegateExecution execution, String param) {
+        return calculateUsers(param);
     }
     /**
-     * 基于流程实例，获得任务的候选用户们
+     * 基于【流程活动】，获得任务的候选用户们
      * <p>
      * 目的：用于获取未执行节点的候选用户们
      *
-     * @param startUserId  流程发起人编号
-     * @param processInstance 流程实例编号
-     * @param activityId 活动 Id (对应 Bpmn XML id)
+     * @param bpmnModel 流程图
+     * @param activityId 活动 ID (对应 Bpmn XML id)
      * @param param     节点的参数
+     * @param startUserId  流程发起人编号
+     * @param processDefinitionId 流程定义编号
+     * @param processVariables 流程变量
      * @return 用户编号集合
      */
-    default Set<Long> calculateUsers(Long startUserId, ProcessInstance processInstance, String activityId, String param) {
-        Set<Long> users = calculateUsers(param);
-        removeDisableUsers(users);
-        return users;
+    @SuppressWarnings("unused")
+    default Set<Long> calculateUsersByActivity(BpmnModel bpmnModel, String activityId, String param,
+                                               Long startUserId, String processDefinitionId, Map<String, Object> processVariables) {
+        return calculateUsers(param);
     }
-    /**
-     * 移除被禁用的用户
-     *
-     * @param users 用户 Ids
-     */
-    void removeDisableUsers(Set<Long> users);
-
 }
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
-
-import cn.hutool.core.collection.CollUtil;
-import cn.iocoder.yudao.framework.common.enums.CommonStatusEnum;
-import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateStrategy;
-import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
-import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
-
-import java.util.Map;
-import java.util.Set;
-
-/**
- * {@link BpmTaskCandidateStrategy} 抽象类
- *
- * @author jason
- */
-public abstract class BpmTaskCandidateAbstractStrategy implements BpmTaskCandidateStrategy {
-
-    protected AdminUserApi adminUserApi;
-
-    public BpmTaskCandidateAbstractStrategy(AdminUserApi adminUserApi) {
-        this.adminUserApi = adminUserApi;
-    }
-
-    @Override
-    public void removeDisableUsers(Set<Long> users) {
-        if (CollUtil.isEmpty(users)) {
-            return;
-        }
-        Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(users);
-        users.removeIf(id -> {
-            AdminUserRespDTO user = userMap.get(id);
-            return user == null || !CommonStatusEnum.ENABLE.getStatus().equals(user.getStatus());
-        });
-    }
-
-}
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.dept;
 import cn.hutool.core.collection.CollUtil;
 import cn.hutool.core.lang.Assert;
@@ -6,6 +6,8 @@ import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCand
 import cn.iocoder.yudao.module.system.api.dept.DeptApi;
 import cn.iocoder.yudao.module.system.api.dept.dto.DeptRespDTO;
 import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
+import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
+import jakarta.annotation.Resource;
 import java.util.*;
@@ -14,14 +16,12 @@ import java.util.*;
  *
  * @author jason
  */
-public abstract class BpmTaskCandidateAbstractDeptLeaderStrategy extends  BpmTaskCandidateAbstractStrategy {
+public abstract class AbstractBpmTaskCandidateDeptLeaderStrategy implements BpmTaskCandidateStrategy {
+    @Resource
     protected DeptApi deptApi;
-
-    public BpmTaskCandidateAbstractDeptLeaderStrategy(AdminUserApi adminUserApi, DeptApi deptApi) {
-        super(adminUserApi);
-        this.deptApi = deptApi;
-    }
+    @Resource
+    protected AdminUserApi adminUserApi;
     /**
      * 获得指定层级的部门负责人，只有第 level 的负责人
@@ -75,4 +75,17 @@ public abstract class BpmTaskCandidateAbstractDeptLeaderStrategy extends  BpmTas
         return deptLeaderIds;
     }
+    /**
+     * 获取发起人的部门
+     *
+     * @param startUserId 发起人 Id
+     */
+    protected DeptRespDTO getStartUserDept(Long startUserId) {
+        AdminUserRespDTO startUser = adminUserApi.getUser(startUserId);
+        if (startUser.getDeptId() == null) { // 找不到部门
+            return null;
+        }
+        return deptApi.getDept(startUser.getDeptId());
+    }
+
 }
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.dept;
 import cn.hutool.core.lang.Assert;
 import cn.iocoder.yudao.framework.common.util.string.StrUtils;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateStrategy;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmTaskCandidateStrategyEnum;
-import cn.iocoder.yudao.module.system.api.dept.DeptApi;
-import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
 import org.springframework.stereotype.Component;
+import java.util.List;
 import java.util.Set;
 /**
@@ -16,11 +15,7 @@ import java.util.Set;
  * @author jason
  */
 @Component
-public class BpmTaskCandidateDeptLeaderMultiStrategy extends BpmTaskCandidateAbstractDeptLeaderStrategy {
-
-    public BpmTaskCandidateDeptLeaderMultiStrategy(AdminUserApi adminUserApi, DeptApi deptApi) {
-        super(adminUserApi, deptApi);
-    }
+public class BpmTaskCandidateDeptLeaderMultiStrategy extends AbstractBpmTaskCandidateDeptLeaderStrategy {
     @Override
     public BpmTaskCandidateStrategyEnum getStrategy() {
@@ -32,14 +27,19 @@ public class BpmTaskCandidateDeptLeaderMultiStrategy extends BpmTaskCandidateAbs
         // 参数格式: | 分隔：1）左边为部门（多个部门用 , 分隔）。2）右边为部门层级
         String[] params = param.split("\\|");
         Assert.isTrue(params.length == 2, "参数格式不匹配");
-        deptApi.validateDeptList(StrUtils.splitToLong(params[0], ","));
-        Assert.isTrue(Integer.parseInt(params[1]) > 0, "部门层级必须大于 0");
+        List<Long> deptIds = StrUtils.splitToLong(params[0], ",");
+        int level = Integer.parseInt(params[1]);
+        // 校验部门存在
+        deptApi.validateDeptList(deptIds);
+        Assert.isTrue(level > 0, "部门层级必须大于 0");
     }
     @Override
     public Set<Long> calculateUsers(String param) {
         String[] params = param.split("\\|");
-        return getMultiLevelDeptLeaderIds(StrUtils.splitToLong(params[0], ","), Integer.valueOf(params[1]));
+        List<Long> deptIds = StrUtils.splitToLong(params[0], ",");
+        int level = Integer.parseInt(params[1]);
+        return super.getMultiLevelDeptLeaderIds(deptIds, level);
     }
 }
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.dept;
 import cn.iocoder.yudao.framework.common.util.string.StrUtils;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateStrategy;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmTaskCandidateStrategyEnum;
 import cn.iocoder.yudao.module.system.api.dept.DeptApi;
 import cn.iocoder.yudao.module.system.api.dept.dto.DeptRespDTO;
-import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
+import jakarta.annotation.Resource;
 import org.springframework.stereotype.Component;
 import java.util.List;
@@ -19,14 +19,10 @@ import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.
  * @author kyle
  */
 @Component
-public class BpmTaskCandidateDeptLeaderStrategy extends BpmTaskCandidateAbstractStrategy {
+public class BpmTaskCandidateDeptLeaderStrategy implements BpmTaskCandidateStrategy {
-    private final DeptApi deptApi;
-
-    public BpmTaskCandidateDeptLeaderStrategy(AdminUserApi adminUserApi, DeptApi deptApi) {
-        super(adminUserApi);
-        this.deptApi = deptApi;
-    }
+    @Resource
+    private DeptApi deptApi;
     @Override
     public BpmTaskCandidateStrategyEnum getStrategy() {
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.dept;
 import cn.iocoder.yudao.framework.common.util.string.StrUtils;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateStrategy;
@@ -6,6 +6,7 @@ import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmTaskCandidat
 import cn.iocoder.yudao.module.system.api.dept.DeptApi;
 import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
 import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
+import jakarta.annotation.Resource;
 import org.springframework.stereotype.Component;
 import java.util.List;
@@ -19,14 +20,12 @@ import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.
  * @author kyle
  */
 @Component
-public class BpmTaskCandidateDeptMemberStrategy extends BpmTaskCandidateAbstractStrategy {
+public class BpmTaskCandidateDeptMemberStrategy implements BpmTaskCandidateStrategy {
-    private final DeptApi deptApi;
-
-    public BpmTaskCandidateDeptMemberStrategy(AdminUserApi adminUserApi, DeptApi deptApi) {
-        super(adminUserApi);
-        this.deptApi = deptApi;
-    }
+    @Resource
+    private DeptApi deptApi;
+    @Resource
+    private AdminUserApi adminUserApi;
     @Override
     public BpmTaskCandidateStrategyEnum getStrategy() {
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.dept;
 import cn.hutool.core.lang.Assert;
 import cn.iocoder.yudao.framework.common.util.number.NumberUtils;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateStrategy;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmTaskCandidateStrategyEnum;
 import cn.iocoder.yudao.module.bpm.service.task.BpmProcessInstanceService;
-import cn.iocoder.yudao.module.system.api.dept.DeptApi;
 import cn.iocoder.yudao.module.system.api.dept.dto.DeptRespDTO;
-import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
-import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
 import jakarta.annotation.Resource;
+import org.flowable.bpmn.model.BpmnModel;
 import org.flowable.engine.delegate.DelegateExecution;
 import org.flowable.engine.runtime.ProcessInstance;
 import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Component;
 import java.util.HashSet;
+import java.util.Map;
 import java.util.Set;
 import static cn.hutool.core.collection.ListUtil.toList;
@@ -26,16 +25,12 @@ import static cn.hutool.core.collection.ListUtil.toList;
  * @author jason
  */
 @Component
-public class BpmTaskCandidateStartUserDeptLeaderMultiStrategy extends BpmTaskCandidateAbstractDeptLeaderStrategy {
+public class BpmTaskCandidateStartUserDeptLeaderMultiStrategy extends AbstractBpmTaskCandidateDeptLeaderStrategy {
     @Resource
     @Lazy
     private BpmProcessInstanceService processInstanceService;
-    public BpmTaskCandidateStartUserDeptLeaderMultiStrategy(AdminUserApi adminUserApi, DeptApi deptApi) {
-        super(adminUserApi, deptApi);
-    }
-
     @Override
     public BpmTaskCandidateStrategyEnum getStrategy() {
         return BpmTaskCandidateStrategyEnum.START_USER_DEPT_LEADER_MULTI;
@@ -43,50 +38,33 @@ public class BpmTaskCandidateStartUserDeptLeaderMultiStrategy extends BpmTaskCan
     @Override
     public void validateParam(String param) {
-        // 参数是部门的层级
-        Assert.isTrue(Integer.parseInt(param) > 0, "部门的层级必须大于 0");
+        int level = Integer.parseInt(param); // 参数是部门的层级
+        Assert.isTrue(level > 0, "部门的层级必须大于 0");
     }
     @Override
-    public Set<Long> calculateUsers(DelegateExecution execution, String param) {
+    public Set<Long> calculateUsersByTask(DelegateExecution execution, String param) {
+        int level = Integer.parseInt(param); // 参数是部门的层级
         // 获得流程发起人
         ProcessInstance processInstance = processInstanceService.getProcessInstance(execution.getProcessInstanceId());
         Long startUserId = NumberUtils.parseLong(processInstance.getStartUserId());
         // 获取发起人的 multi 部门负责人
-        DeptRespDTO dept = getStartUserDept(startUserId);
+        DeptRespDTO dept = super.getStartUserDept(startUserId);
         if (dept == null) {
             return new HashSet<>();
         }
-        Set<Long> users = getMultiLevelDeptLeaderIds(toList(dept.getId()), Integer.valueOf(param)); // 参数是部门的层级
-        // TODO @jason：这里 removeDisableUsers 的原因是啥呀？
-        // TODO @芋艿 calculateUsers(execution, param)  calculateUsers(startUserId, processInstance, activityId, param) 现在这两个方法, 默认都移除了被禁用的用户
-        // TODO @芋艿 因为被禁用的用户是不能审批任务。 在这里移除是不是好一点。 代码可以重用。
-        removeDisableUsers(users);
-        return users;
+        return super.getMultiLevelDeptLeaderIds(toList(dept.getId()), level);
     }
     @Override
-    public Set<Long> calculateUsers(Long startUserId, ProcessInstance processInstance, String activityId, String param) {
-        DeptRespDTO dept = getStartUserDept(startUserId);
+    public Set<Long> calculateUsersByActivity(BpmnModel bpmnModel, String activityId, String param,
+                                              Long startUserId, String processDefinitionId, Map<String, Object> processVariables) {
+        int level = Integer.parseInt(param); // 参数是部门的层级
+        DeptRespDTO dept = super.getStartUserDept(startUserId);
         if (dept == null) {
             return new HashSet<>();
         }
-        Set<Long> users =  getMultiLevelDeptLeaderIds(toList(dept.getId()), Integer.valueOf(param)); // 参数是部门的层级
-        removeDisableUsers(users);
-        return users;
-    }
-
-    /**
-     * 获取发起人的部门
-     *
-     * @param startUserId 发起人 Id
-     */
-    protected DeptRespDTO getStartUserDept(Long startUserId) {
-        AdminUserRespDTO startUser = adminUserApi.getUser(startUserId);
-        if (startUser.getDeptId() == null) { // 找不到部门
-            return null;
-        }
-        return deptApi.getDept(startUser.getDeptId());
+        return super.getMultiLevelDeptLeaderIds(toList(dept.getId()), level);
     }
 }
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.dept;
 import cn.hutool.core.lang.Assert;
 import cn.iocoder.yudao.framework.common.util.number.NumberUtils;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateStrategy;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmTaskCandidateStrategyEnum;
 import cn.iocoder.yudao.module.bpm.service.task.BpmProcessInstanceService;
-import cn.iocoder.yudao.module.system.api.dept.DeptApi;
 import cn.iocoder.yudao.module.system.api.dept.dto.DeptRespDTO;
-import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
-import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
 import jakarta.annotation.Resource;
+import org.flowable.bpmn.model.BpmnModel;
 import org.flowable.engine.delegate.DelegateExecution;
 import org.flowable.engine.runtime.ProcessInstance;
 import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Component;
 import java.util.HashSet;
+import java.util.Map;
 import java.util.Set;
 import static cn.iocoder.yudao.framework.common.util.collection.SetUtils.asSet;
@@ -26,7 +25,7 @@ import static cn.iocoder.yudao.framework.common.util.collection.SetUtils.asSet;
  * @author jason
  */
 @Component
-public class BpmTaskCandidateStartUserDeptLeaderStrategy extends BpmTaskCandidateAbstractDeptLeaderStrategy {
+public class BpmTaskCandidateStartUserDeptLeaderStrategy extends AbstractBpmTaskCandidateDeptLeaderStrategy {
     @Resource
     @Lazy // 避免循环依赖
@@ -37,10 +36,6 @@ public class BpmTaskCandidateStartUserDeptLeaderStrategy extends BpmTaskCandidat
         return BpmTaskCandidateStrategyEnum.START_USER_DEPT_LEADER;
     }
-    public BpmTaskCandidateStartUserDeptLeaderStrategy(AdminUserApi adminUserApi, DeptApi deptApi) {
-        super(adminUserApi, deptApi);
-    }
-
     @Override
     public void validateParam(String param) {
         // 参数是部门的层级
@@ -48,44 +43,29 @@ public class BpmTaskCandidateStartUserDeptLeaderStrategy extends BpmTaskCandidat
     }
     @Override
-    public Set<Long> calculateUsers(DelegateExecution execution, String param) {
+    public Set<Long> calculateUsersByTask(DelegateExecution execution, String param) {
         // 获得流程发起人
         ProcessInstance processInstance = processInstanceService.getProcessInstance(execution.getProcessInstanceId());
         Long startUserId = NumberUtils.parseLong(processInstance.getStartUserId());
         // 获取发起人的部门负责人
-        Set<Long> users = getStartUserDeptLeader(startUserId, param);
-        removeDisableUsers(users);
-        return users;
+        return getStartUserDeptLeader(startUserId, param);
     }
     @Override
-    public Set<Long> calculateUsers(Long startUserId, ProcessInstance processInstance, String activityId, String param) {
+    public Set<Long> calculateUsersByActivity(BpmnModel bpmnModel, String activityId, String param,
+                                              Long startUserId, String processDefinitionId, Map<String, Object> processVariables) {
         // 获取发起人的部门负责人
-        Set<Long> users =  getStartUserDeptLeader(startUserId, param);
-        removeDisableUsers(users);
-        return users;
+        return getStartUserDeptLeader(startUserId, param);
     }
     private Set<Long> getStartUserDeptLeader(Long startUserId, String param) {
-        DeptRespDTO dept = getStartUserDept(startUserId);
+        int level = Integer.parseInt(param); // 参数是部门的层级
+        DeptRespDTO dept = super.getStartUserDept(startUserId);
         if (dept == null) {
             return new HashSet<>();
         }
-        Long deptLeaderId = getAssignLevelDeptLeaderId(dept, Integer.valueOf(param)); // 参数是部门的层级
+        Long deptLeaderId = super.getAssignLevelDeptLeaderId(dept, level);
         return deptLeaderId != null ? asSet(deptLeaderId) : new HashSet<>();
     }
-    /**
-     * 获取发起人的部门
-     *
-     * @param startUserId 发起人 Id
-     */
-    protected DeptRespDTO getStartUserDept(Long startUserId) {
-        AdminUserRespDTO startUser = adminUserApi.getUser(startUserId);
-        if (startUser.getDeptId() == null) { // 找不到部门
-            return null;
-        }
-        return deptApi.getDept(startUser.getDeptId());
-    }
-
 }
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.dept;
 import cn.hutool.core.collection.CollUtil;
 import cn.hutool.core.lang.Assert;
+import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.user.BpmTaskCandidateUserStrategy;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmTaskCandidateStrategyEnum;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.BpmnModelUtils;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.FlowableUtils;
 import cn.iocoder.yudao.module.bpm.service.task.BpmProcessInstanceService;
-import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
+import com.google.common.collect.Sets;
 import jakarta.annotation.Resource;
 import org.flowable.bpmn.model.BpmnModel;
 import org.flowable.bpmn.model.UserTask;
@@ -23,16 +24,12 @@ import java.util.*;
  * @author 芋道源码
  */
 @Component
-public class BpmTaskCandidateStartUserSelectStrategy extends BpmTaskCandidateAbstractStrategy {
+public class BpmTaskCandidateStartUserSelectStrategy extends AbstractBpmTaskCandidateDeptLeaderStrategy {
     @Resource
     @Lazy // 延迟加载，避免循环依赖
     private BpmProcessInstanceService processInstanceService;
-    public BpmTaskCandidateStartUserSelectStrategy(AdminUserApi adminUserApi) {
-        super(adminUserApi);
-    }
-
     @Override
     public BpmTaskCandidateStrategyEnum getStrategy() {
         return BpmTaskCandidateStrategyEnum.START_USER_SELECT;
@@ -42,7 +39,12 @@ public class BpmTaskCandidateStartUserSelectStrategy extends BpmTaskCandidateAbs
     public void validateParam(String param) {}
     @Override
-    public Set<Long> calculateUsers(DelegateExecution execution, String param) {
+    public boolean isParamRequired() {
+        return false;
+    }
+
+    @Override
+    public LinkedHashSet<Long> calculateUsersByTask(DelegateExecution execution, String param) {
         ProcessInstance processInstance = processInstanceService.getProcessInstance(execution.getProcessInstanceId());
         Assert.notNull(processInstance, "流程实例({})不能为空", execution.getProcessInstanceId());
         Map<String, List<Long>> startUserSelectAssignees = FlowableUtils.getStartUserSelectAssignees(processInstance);
@@ -50,28 +52,22 @@ public class BpmTaskCandidateStartUserSelectStrategy extends BpmTaskCandidateAbs
                 execution.getProcessInstanceId());
         // 获得审批人
         List<Long> assignees = startUserSelectAssignees.get(execution.getCurrentActivityId());
-        Set<Long> users = new LinkedHashSet<>(assignees);
-        removeDisableUsers(users);
-        return users;
+        return new LinkedHashSet<>(assignees);
     }
     @Override
-    public Set<Long> calculateUsers(Long startUserId, ProcessInstance processInstance, String activityId, String param) {
-        if (processInstance == null) {
-            return Collections.emptySet();
+    public LinkedHashSet<Long> calculateUsersByActivity(BpmnModel bpmnModel, String activityId, String param,
+                                                        Long startUserId, String processDefinitionId, Map<String, Object> processVariables) {
+        if (processVariables == null) {
+            return Sets.newLinkedHashSet();
+        }
+        Map<String, List<Long>> startUserSelectAssignees = FlowableUtils.getStartUserSelectAssignees(processVariables);
+        if (startUserSelectAssignees == null) {
+            return Sets.newLinkedHashSet();
         }
-        Map<String, List<Long>> startUserSelectAssignees = FlowableUtils.getStartUserSelectAssignees(processInstance);
-        Assert.notNull(startUserSelectAssignees, "流程实例({}) 的发起人自选审批人不能为空", processInstance.getId());
         // 获得审批人
         List<Long> assignees = startUserSelectAssignees.get(activityId);
-        Set<Long> users = new LinkedHashSet<>(assignees);
-        removeDisableUsers(users);
-        return users;
-    }
-
-    @Override
-    public boolean isParamRequired() {
-        return false;
+        return new LinkedHashSet<>(assignees);
     }
     /**
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.other;
 import cn.hutool.core.lang.Assert;
 import cn.iocoder.yudao.module.bpm.dal.dataobject.definition.BpmProcessDefinitionInfoDO;
@@ -7,13 +7,15 @@ import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCand
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmTaskCandidateStrategyEnum;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.BpmnModelUtils;
 import cn.iocoder.yudao.module.bpm.service.definition.BpmProcessDefinitionService;
-import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
 import jakarta.annotation.Resource;
+import org.flowable.bpmn.model.BpmnModel;
+import org.flowable.bpmn.model.FlowElement;
 import org.flowable.engine.delegate.DelegateExecution;
 import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Component;
 import java.util.HashSet;
+import java.util.Map;
 import java.util.Objects;
 import java.util.Set;
@@ -23,16 +25,12 @@ import java.util.Set;
  * @author kyle
  */
 @Component
-public class BpmTaskCandidateAssignEmptyStrategy extends BpmTaskCandidateAbstractStrategy {
+public class BpmTaskCandidateAssignEmptyStrategy implements BpmTaskCandidateStrategy {
     @Resource
     @Lazy // 延迟加载，避免循环依赖
     private BpmProcessDefinitionService processDefinitionService;
-    public BpmTaskCandidateAssignEmptyStrategy(AdminUserApi adminUserApi) {
-        super(adminUserApi);
-    }
-
     @Override
     public BpmTaskCandidateStrategyEnum getStrategy() {
         return BpmTaskCandidateStrategyEnum.ASSIGN_EMPTY;
@@ -43,19 +41,28 @@ public class BpmTaskCandidateAssignEmptyStrategy extends BpmTaskCandidateAbstrac
     }
     @Override
-    public Set<Long> calculateUsers(DelegateExecution execution, String param) {
+    public Set<Long> calculateUsersByTask(DelegateExecution execution, String param) {
+        return getCandidateUsers(execution.getProcessDefinitionId(), execution.getCurrentFlowElement());
+    }
+
+    @Override
+    public Set<Long> calculateUsersByActivity(BpmnModel bpmnModel, String activityId, String param,
+                                              Long startUserId, String processDefinitionId, Map<String, Object> processVariables) {
+        FlowElement flowElement = BpmnModelUtils.getFlowElementById(bpmnModel, activityId);
+        return getCandidateUsers(processDefinitionId, flowElement);
+    }
+
+    private Set<Long> getCandidateUsers(String processDefinitionId, FlowElement flowElement) {
         // 情况一：指定人员审批
-        Integer assignEmptyHandlerType = BpmnModelUtils.parseAssignEmptyHandlerType(execution.getCurrentFlowElement());
+        Integer assignEmptyHandlerType = BpmnModelUtils.parseAssignEmptyHandlerType(flowElement);
         if (Objects.equals(assignEmptyHandlerType, BpmUserTaskAssignEmptyHandlerTypeEnum.ASSIGN_USER.getType())) {
-            Set<Long> users = new HashSet<>(BpmnModelUtils.parseAssignEmptyHandlerUserIds(execution.getCurrentFlowElement()));
-            removeDisableUsers(users);
-            return users;
+            return new HashSet<>(BpmnModelUtils.parseAssignEmptyHandlerUserIds(flowElement));
         }
         // 情况二：流程管理员
         if (Objects.equals(assignEmptyHandlerType, BpmUserTaskAssignEmptyHandlerTypeEnum.ASSIGN_ADMIN.getType())) {
-            BpmProcessDefinitionInfoDO processDefinition = processDefinitionService.getProcessDefinitionInfo(execution.getProcessDefinitionId());
-            Assert.notNull(processDefinition, "流程定义({})不存在", execution.getProcessDefinitionId());
+            BpmProcessDefinitionInfoDO processDefinition = processDefinitionService.getProcessDefinitionInfo(processDefinitionId);
+            Assert.notNull(processDefinition, "流程定义({})不存在", processDefinitionId);
             return new HashSet<>(processDefinition.getManagerUserIds());
         }
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.other;
 import cn.hutool.core.convert.Convert;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateStrategy;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmTaskCandidateStrategyEnum;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.FlowableUtils;
-import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
+import org.flowable.bpmn.model.BpmnModel;
 import org.flowable.engine.delegate.DelegateExecution;
 import org.springframework.stereotype.Component;
+import java.util.Map;
 import java.util.Set;
 /**
@@ -16,11 +17,7 @@ import java.util.Set;
  * @author 芋道源码
  */
 @Component
-public class BpmTaskCandidateExpressionStrategy extends BpmTaskCandidateAbstractStrategy {
-
-    public BpmTaskCandidateExpressionStrategy(AdminUserApi adminUserApi) {
-        super(adminUserApi);
-    }
+public class BpmTaskCandidateExpressionStrategy implements BpmTaskCandidateStrategy {
     @Override
     public BpmTaskCandidateStrategyEnum getStrategy() {
@@ -33,11 +30,16 @@ public class BpmTaskCandidateExpressionStrategy extends BpmTaskCandidateAbstract
     }
     @Override
-    public Set<Long> calculateUsers(DelegateExecution execution, String param) {
+    public Set<Long> calculateUsersByTask(DelegateExecution execution, String param) {
         Object result = FlowableUtils.getExpressionValue(execution, param);
-        Set<Long> users = Convert.toSet(Long.class, result);
-        removeDisableUsers(users);
-        return users;
+        return Convert.toSet(Long.class, result);
+    }
+
+    @Override
+    public Set<Long> calculateUsersByActivity(BpmnModel bpmnModel, String activityId, String param,
+                                              Long startUserId, String processDefinitionId, Map<String, Object> processVariables) {
+        Object result = FlowableUtils.getExpressionValue(processVariables, param);
+        return Convert.toSet(Long.class, result);
     }
 }
 \ No newline at end of file
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.user;
 import cn.iocoder.yudao.framework.common.util.string.StrUtils;
 import cn.iocoder.yudao.module.bpm.dal.dataobject.definition.BpmUserGroupDO;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateStrategy;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmTaskCandidateStrategyEnum;
 import cn.iocoder.yudao.module.bpm.service.definition.BpmUserGroupService;
-import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
+import jakarta.annotation.Resource;
 import org.springframework.stereotype.Component;
 import java.util.Collection;
@@ -20,14 +20,10 @@ import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.
  * @author kyle
  */
 @Component
-public class BpmTaskCandidateGroupStrategy extends BpmTaskCandidateAbstractStrategy {
+public class BpmTaskCandidateGroupStrategy implements BpmTaskCandidateStrategy {
-    private final BpmUserGroupService userGroupService;
-
-    public BpmTaskCandidateGroupStrategy(AdminUserApi adminUserApi, BpmUserGroupService userGroupService) {
-        super(adminUserApi);
-        this.userGroupService = userGroupService;
-    }
+    @Resource
+    private BpmUserGroupService userGroupService;
     @Override
     public BpmTaskCandidateStrategyEnum getStrategy() {
@@ -37,7 +33,7 @@ public class BpmTaskCandidateGroupStrategy extends BpmTaskCandidateAbstractStrat
     @Override
     public void validateParam(String param) {
         Set<Long> groupIds = StrUtils.splitToLongSet(param);
-        userGroupService.getUserGroupList(groupIds);
+        userGroupService.validUserGroups(groupIds);
     }
     @Override
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.user;
 import cn.iocoder.yudao.framework.common.util.string.StrUtils;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateStrategy;
@@ -6,6 +6,7 @@ import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmTaskCandidat
 import cn.iocoder.yudao.module.system.api.dept.PostApi;
 import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
 import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
+import jakarta.annotation.Resource;
 import org.springframework.stereotype.Component;
 import java.util.List;
@@ -19,14 +20,12 @@ import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.
  * @author kyle
  */
 @Component
-public class BpmTaskCandidatePostStrategy extends BpmTaskCandidateAbstractStrategy {
+public class BpmTaskCandidatePostStrategy implements BpmTaskCandidateStrategy {
-    private final PostApi postApi;
-
-    public BpmTaskCandidatePostStrategy(AdminUserApi adminUserApi, PostApi postApi) {
-        super(adminUserApi);
-        this.postApi = postApi;
-    }
+    @Resource
+    private PostApi postApi;
+    @Resource
+    private AdminUserApi adminUserApi;
     @Override
     public BpmTaskCandidateStrategyEnum getStrategy() {
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.user;
 import cn.iocoder.yudao.framework.common.util.string.StrUtils;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateStrategy;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmTaskCandidateStrategyEnum;
 import cn.iocoder.yudao.module.system.api.permission.PermissionApi;
 import cn.iocoder.yudao.module.system.api.permission.RoleApi;
-import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
 import jakarta.annotation.Resource;
 import org.springframework.stereotype.Component;
@@ -17,17 +16,13 @@ import java.util.Set;
  * @author kyle
  */
 @Component
-public class BpmTaskCandidateRoleStrategy extends BpmTaskCandidateAbstractStrategy {
+public class BpmTaskCandidateRoleStrategy implements BpmTaskCandidateStrategy {
     @Resource
     private RoleApi roleApi;
     @Resource
     private PermissionApi permissionApi;
-    public BpmTaskCandidateRoleStrategy(AdminUserApi adminUserApi) {
-        super(adminUserApi);
-    }
-
     @Override
     public BpmTaskCandidateStrategyEnum getStrategy() {
         return BpmTaskCandidateStrategyEnum.ROLE;
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.user;
 import cn.iocoder.yudao.framework.common.util.collection.SetUtils;
+import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateStrategy;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmTaskCandidateStrategyEnum;
 import cn.iocoder.yudao.module.bpm.service.task.BpmProcessInstanceService;
-import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
 import jakarta.annotation.Resource;
+import org.flowable.bpmn.model.BpmnModel;
 import org.flowable.engine.delegate.DelegateExecution;
 import org.flowable.engine.runtime.ProcessInstance;
 import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Component;
+import java.util.Map;
 import java.util.Set;
 /**
@@ -20,16 +22,12 @@ import java.util.Set;
  * @author jason
  */
 @Component
-public class BpmTaskCandidateStartUserStrategy extends BpmTaskCandidateAbstractStrategy {
+public class BpmTaskCandidateStartUserStrategy implements BpmTaskCandidateStrategy {
     @Resource
     @Lazy // 延迟加载，避免循环依赖
     private BpmProcessInstanceService processInstanceService;
-    public BpmTaskCandidateStartUserStrategy(AdminUserApi adminUserApi) {
-        super(adminUserApi);
-    }
-
     @Override
     public BpmTaskCandidateStrategyEnum getStrategy() {
         return BpmTaskCandidateStrategyEnum.START_USER;
@@ -45,18 +43,15 @@ public class BpmTaskCandidateStartUserStrategy extends BpmTaskCandidateAbstractS
     }
     @Override
-    public Set<Long> calculateUsers(DelegateExecution execution, String param) {
+    public Set<Long> calculateUsersByTask(DelegateExecution execution, String param) {
         ProcessInstance processInstance = processInstanceService.getProcessInstance(execution.getProcessInstanceId());
-        Set<Long> users =  SetUtils.asSet(Long.valueOf(processInstance.getStartUserId()));
-        removeDisableUsers(users);
-        return users;
+        return SetUtils.asSet(Long.valueOf(processInstance.getStartUserId()));
     }
     @Override
-    public Set<Long> calculateUsers(Long startUserId, ProcessInstance processInstance, String activityId, String param) {
-        Set<Long> users = SetUtils.asSet(startUserId);
-        removeDisableUsers(users);
-        return users;
+    public Set<Long> calculateUsersByActivity(BpmnModel bpmnModel, String activityId, String param,
+                                              Long startUserId, String processDefinitionId, Map<String, Object> processVariables) {
+        return SetUtils.asSet(startUserId);
     }
 }
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.user;
 import cn.hutool.core.text.StrPool;
 import cn.iocoder.yudao.framework.common.util.string.StrUtils;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateStrategy;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmTaskCandidateStrategyEnum;
 import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
+import jakarta.annotation.Resource;
 import org.springframework.stereotype.Component;
 import java.util.LinkedHashSet;
-import java.util.Set;
 /**
  * 用户 {@link BpmTaskCandidateStrategy} 实现类
@@ -16,11 +16,10 @@ import java.util.Set;
  * @author kyle
  */
 @Component
-public class BpmTaskCandidateUserStrategy extends BpmTaskCandidateAbstractStrategy {
+public class BpmTaskCandidateUserStrategy implements BpmTaskCandidateStrategy {
-    public BpmTaskCandidateUserStrategy(AdminUserApi adminUserApi) {
-        super(adminUserApi);
-    }
+    @Resource
+    private AdminUserApi adminUserApi;
     @Override
     public BpmTaskCandidateStrategyEnum getStrategy() {
@@ -33,7 +32,7 @@ public class BpmTaskCandidateUserStrategy extends BpmTaskCandidateAbstractStrate
     }
     @Override
-    public Set<Long> calculateUsers(String param) {
+    public LinkedHashSet<Long> calculateUsers(String param) {
         return new LinkedHashSet<>(StrUtils.splitToLong(param, StrPool.COMMA));
     }
@@ -34,7 +34,7 @@ public class BpmCopyTaskDelegate implements JavaDelegate {
     @Override
     public void execute(DelegateExecution execution) {
         // 1. 获得抄送人
-        Set<Long> userIds = taskCandidateInvoker.calculateUsers(execution);
+        Set<Long> userIds = taskCandidateInvoker.calculateUsersByTask(execution);
         if (CollUtil.isEmpty(userIds)) {
             return;
         }
@@ -5,7 +5,6 @@ import cn.hutool.core.map.MapUtil;
 import cn.hutool.core.util.ArrayUtil;
 import cn.hutool.core.util.ObjUtil;
 import cn.hutool.core.util.StrUtil;
-import cn.hutool.extra.spring.SpringUtil;
 import cn.iocoder.yudao.framework.common.util.collection.CollectionUtils;
 import cn.iocoder.yudao.framework.common.util.number.NumberUtils;
 import cn.iocoder.yudao.framework.common.util.string.StrUtils;
@@ -23,7 +22,6 @@ import org.flowable.bpmn.model.Process;
 import org.flowable.bpmn.model.*;
 import org.flowable.common.engine.api.FlowableException;
 import org.flowable.common.engine.impl.util.io.BytesStreamSource;
-import org.flowable.engine.ManagementService;
 import java.util.*;
@@ -773,20 +771,16 @@ public class BpmnModelUtils {
      * @return 是否满足条件
      */
     public static boolean evalConditionExpress(Map<String, Object> variables, String express) {
-        ManagementService managementService = SpringUtil.getBean(ManagementService.class);
         if (express == null) {
             return Boolean.FALSE;
         }
-        // TODO @jason：疑问，为啥这里要在 managementService 里执行哈？
-        Object result = managementService.executeCommand(context -> {
-            try {
-                return FlowableUtils.getExpressionValue(variables, express);
-            } catch (FlowableException ex) {
-                log.error("[evalConditionExpress][条件表达式({}) 解析报错", express, ex);
-                return Boolean.FALSE;
-            }
-        });
-        return Boolean.TRUE.equals(result);
+        try {
+            Object result = FlowableUtils.getExpressionValue(variables, express);
+            return Boolean.TRUE.equals(result);
+        } catch (FlowableException ex) {
+            log.error("[evalConditionExpress][条件表达式({}) 变量({}) 解析报错", express, variables, ex);
+            return Boolean.FALSE;
+        }
     }
     @SuppressWarnings("PatternVariableCanBeUsed")
 package cn.iocoder.yudao.module.bpm.framework.flowable.core.util;
 import cn.hutool.core.util.ObjectUtil;
+import cn.hutool.extra.spring.SpringUtil;
 import cn.iocoder.yudao.framework.tenant.core.context.TenantContextHolder;
 import cn.iocoder.yudao.framework.tenant.core.util.TenantUtils;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnVariableConstants;
@@ -9,6 +10,7 @@ import org.flowable.common.engine.api.variable.VariableContainer;
 import org.flowable.common.engine.impl.el.ExpressionManager;
 import org.flowable.common.engine.impl.identity.Authentication;
 import org.flowable.common.engine.impl.variable.MapDelegateVariableContainer;
+import org.flowable.engine.ManagementService;
 import org.flowable.engine.ProcessEngineConfiguration;
 import org.flowable.engine.history.HistoricProcessInstance;
 import org.flowable.engine.impl.cfg.ProcessEngineConfigurationImpl;
@@ -146,9 +148,22 @@ public class FlowableUtils {
      * @param processInstance 流程实例
      * @return 发起用户选择的审批人 Map
      */
-    @SuppressWarnings("unchecked")
     public static Map<String, List<Long>> getStartUserSelectAssignees(ProcessInstance processInstance) {
-        return (Map<String, List<Long>>) processInstance.getProcessVariables().get(
+        return processInstance != null ? getStartUserSelectAssignees(processInstance.getProcessVariables()) : null;
+    }
+
+    /**
+     * 获得流程实例的发起用户选择的审批人 Map
+     *
+     * @param processVariables 流程变量
+     * @return 发起用户选择的审批人 Map
+     */
+    @SuppressWarnings("unchecked")
+    public static Map<String, List<Long>> getStartUserSelectAssignees(Map<String, Object> processVariables) {
+        if (processVariables == null) {
+            return null;
+        }
+        return (Map<String, List<Long>>) processVariables.get(
                 BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_START_USER_SELECT_ASSIGNEES);
     }
@@ -202,18 +217,29 @@ public class FlowableUtils {
     // ========== Expression 相关的工具方法 ==========
-    public static Object getExpressionValue(VariableContainer variableContainer, String expressionString) {
-        ProcessEngineConfigurationImpl processEngineConfiguration = CommandContextUtil.getProcessEngineConfiguration();
-        assert processEngineConfiguration != null;
+    private static Object getExpressionValue(VariableContainer variableContainer, String expressionString,
+                                             ProcessEngineConfigurationImpl processEngineConfiguration) {
+        assert processEngineConfiguration!= null;
         ExpressionManager expressionManager = processEngineConfiguration.getExpressionManager();
-        assert expressionManager != null;
+        assert expressionManager!= null;
         Expression expression = expressionManager.createExpression(expressionString);
         return expression.getValue(variableContainer);
     }
+    public static Object getExpressionValue(VariableContainer variableContainer, String expressionString) {
+        ProcessEngineConfigurationImpl processEngineConfiguration = CommandContextUtil.getProcessEngineConfiguration();
+        if (processEngineConfiguration != null) {
+            return getExpressionValue(variableContainer, expressionString, processEngineConfiguration);
+        }
+        // 如果 ProcessEngineConfigurationImpl 获取不到，则需要通过 ManagementService 来获取
+        ManagementService managementService = SpringUtil.getBean(ManagementService.class);
+        assert managementService != null;
+        return managementService.executeCommand(context ->
+                getExpressionValue(variableContainer, expressionString, CommandContextUtil.getProcessEngineConfiguration()));
+    }
+
     public static Object getExpressionValue(Map<String, Object> variable, String expressionString) {
-        VariableContainer variableContainer = new MapDelegateVariableContainer(variable,
-                VariableContainer.empty());
+        VariableContainer variableContainer = new MapDelegateVariableContainer(variable, VariableContainer.empty());
         return getExpressionValue(variableContainer, expressionString);
     }
-package cn.iocoder.yudao.module.bpm.service.task;

import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.collection.ListUtil;
import cn.hutool.core.lang.Assert;
import cn.hutool.core.util.ArrayUtil;
import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.StrUtil;
import cn.iocoder.yudao.framework.common.pojo.PageResult;
import cn.iocoder.yudao.framework.common.util.date.DateUtils;
import cn.iocoder.yudao.framework.common.util.json.JsonUtils;
import cn.iocoder.yudao.framework.common.util.object.ObjectUtils;
import cn.iocoder.yudao.framework.common.util.object.PageUtils;
import cn.iocoder.yudao.module.bpm.api.task.dto.BpmProcessInstanceCreateReqDTO;
import cn.iocoder.yudao.module.bpm.controller.admin.definition.vo.model.simple.BpmSimpleModelNodeVO;
import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.*;
import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.BpmApprovalDetailRespVO.ActivityNodeTask;
import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.task.BpmTaskRespVO;
import cn.iocoder.yudao.module.bpm.convert.task.BpmProcessInstanceConvert;
import cn.iocoder.yudao.module.bpm.dal.dataobject.definition.BpmProcessDefinitionInfoDO;
import cn.iocoder.yudao.module.bpm.enums.ErrorCodeConstants;
import cn.iocoder.yudao.module.bpm.enums.definition.BpmModelTypeEnum;
import cn.iocoder.yudao.module.bpm.enums.definition.BpmSimpleModelNodeType;
import cn.iocoder.yudao.module.bpm.enums.task.BpmProcessInstanceStatusEnum;
import cn.iocoder.yudao.module.bpm.enums.task.BpmReasonEnum;
import cn.iocoder.yudao.module.bpm.enums.task.BpmTaskStatusEnum;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateInvoker;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateStrategy;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.BpmTaskCandidateStartUserSelectStrategy;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmTaskCandidateStrategyEnum;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnModelConstants;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnVariableConstants;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.event.BpmProcessInstanceEventPublisher;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.BpmnModelUtils;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.FlowableUtils;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.SimpleModelUtils;
import cn.iocoder.yudao.module.bpm.service.definition.BpmProcessDefinitionService;
import cn.iocoder.yudao.module.bpm.service.message.BpmMessageService;
import cn.iocoder.yudao.module.system.api.dept.DeptApi;
import cn.iocoder.yudao.module.system.api.dept.dto.DeptRespDTO;
import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
import jakarta.annotation.Resource;
import jakarta.validation.Valid;
import lombok.extern.slf4j.Slf4j;
import org.flowable.bpmn.constants.BpmnXMLConstants;
import org.flowable.bpmn.model.*;
import org.flowable.engine.HistoryService;
import org.flowable.engine.RuntimeService;
import org.flowable.engine.history.HistoricActivityInstance;
import org.flowable.engine.history.HistoricProcessInstance;
import org.flowable.engine.history.HistoricProcessInstanceQuery;
import org.flowable.engine.repository.ProcessDefinition;
import org.flowable.engine.runtime.ProcessInstance;
import org.flowable.task.api.history.HistoricTaskInstance;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.validation.annotation.Validated;

import java.util.*;

import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.*;
import static cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.BpmApprovalDetailRespVO.ActivityNode;
import static cn.iocoder.yudao.module.bpm.enums.ErrorCodeConstants.*;
import static cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnModelConstants.START_USER_NODE_ID;
import static java.util.Arrays.asList;
import static java.util.Collections.singletonList;
import static org.flowable.bpmn.constants.BpmnXMLConstants.*;

/**
 * 流程实例 Service 实现类
 * <p>
 * ProcessDefinition & ProcessInstance & Execution & Task 的关系：
 * 1. <a href="https://blog.csdn.net/bobozai86/article/details/105210414" />
 * <p>
 * HistoricProcessInstance & ProcessInstance 的关系：
 * 1. <a href=" https://my.oschina.net/843294669/blog/71902" />
 * <p>
 * 简单来说，前者 = 历史 + 运行中的流程实例，后者仅是运行中的流程实例
 *
 * @author 芋道源码
 */
@Service
@Validated
@Slf4j
public class BpmProcessInstanceServiceImpl implements BpmProcessInstanceService {

    @Resource
    private RuntimeService runtimeService;
    @Resource
    private HistoryService historyService;

    @Resource
    private BpmProcessDefinitionService processDefinitionService;
    @Resource
    @Lazy // 避免循环依赖
    private BpmTaskService taskService;
    @Resource
    private BpmMessageService messageService;
    @Resource
    private BpmTaskCandidateInvoker bpmTaskCandidateInvoker;

    @Resource
    private AdminUserApi adminUserApi;
    @Resource
    private DeptApi deptApi;

    @Resource
    private BpmProcessInstanceEventPublisher processInstanceEventPublisher;

    // ========== Query 查询相关方法 ==========

    @Override
    public ProcessInstance getProcessInstance(String id) {
        return runtimeService.createProcessInstanceQuery()
                .includeProcessVariables()
                .processInstanceId(id)
                .singleResult();
    }

    @Override
    public List<ProcessInstance> getProcessInstances(Set<String> ids) {
        return runtimeService.createProcessInstanceQuery().processInstanceIds(ids).list();
    }

    @Override
    public HistoricProcessInstance getHistoricProcessInstance(String id) {
        return historyService.createHistoricProcessInstanceQuery().processInstanceId(id).includeProcessVariables().singleResult();
    }

    @Override
    public List<HistoricProcessInstance> getHistoricProcessInstances(Set<String> ids) {
        return historyService.createHistoricProcessInstanceQuery().processInstanceIds(ids).list();
    }

    @Override
    public PageResult<HistoricProcessInstance> getProcessInstancePage(Long userId,
                                                                      BpmProcessInstancePageReqVO pageReqVO) {
        // 通过 BpmProcessInstanceExtDO 表，先查询到对应的分页
        HistoricProcessInstanceQuery processInstanceQuery = historyService.createHistoricProcessInstanceQuery()
                .includeProcessVariables()
                .processInstanceTenantId(FlowableUtils.getTenantId())
                .orderByProcessInstanceStartTime().desc();
        if (userId != null) { // 【我的流程】菜单时，需要传递该字段
            processInstanceQuery.startedBy(String.valueOf(userId));
        } else if (pageReqVO.getStartUserId() != null) { // 【管理流程】菜单时，才会传递该字段
            processInstanceQuery.startedBy(String.valueOf(pageReqVO.getStartUserId()));
        }
        if (StrUtil.isNotEmpty(pageReqVO.getName())) {
            processInstanceQuery.processInstanceNameLike("%" + pageReqVO.getName() + "%");
        }
        if (StrUtil.isNotEmpty(pageReqVO.getProcessDefinitionKey())) {
            processInstanceQuery.processDefinitionKey(pageReqVO.getProcessDefinitionKey());
        }
        if (StrUtil.isNotEmpty(pageReqVO.getCategory())) {
            processInstanceQuery.processDefinitionCategory(pageReqVO.getCategory());
        }
        if (pageReqVO.getStatus() != null) {
            processInstanceQuery.variableValueEquals(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS, pageReqVO.getStatus());
        }
        if (ArrayUtil.isNotEmpty(pageReqVO.getCreateTime())) {
            processInstanceQuery.startedAfter(DateUtils.of(pageReqVO.getCreateTime()[0]));
            processInstanceQuery.startedBefore(DateUtils.of(pageReqVO.getCreateTime()[1]));
        }
        // 查询数量
        long processInstanceCount = processInstanceQuery.count();
        if (processInstanceCount == 0) {
            return PageResult.empty(processInstanceCount);
        }
        // 查询列表
        List<HistoricProcessInstance> processInstanceList = processInstanceQuery.listPage(PageUtils.getStart(pageReqVO), pageReqVO.getPageSize());
        return new PageResult<>(processInstanceList, processInstanceCount);
    }


    private Map<String, String> getFormFieldsPermission(BpmnModel bpmnModel,
                                                        String activityId, String taskId) {
        // 1. 获取流程活动编号。流程活动 Id 为空事，从流程任务中获取流程活动 Id
        if (StrUtil.isEmpty(activityId) && StrUtil.isNotEmpty(taskId)) {
            activityId = Optional.ofNullable(taskService.getHistoricTask(taskId))
                    .map(HistoricTaskInstance::getTaskDefinitionKey).orElse(null);
        }
        if (StrUtil.isEmpty(activityId)) {
            return null;
        }

        // 2. 从 BpmnModel 中解析表单字段权限
        return BpmnModelUtils.parseFormFieldsPermission(bpmnModel, activityId);
    }

    @Override
    public BpmApprovalDetailRespVO getApprovalDetail(Long loginUserId, BpmApprovalDetailReqVO reqVO) {
        // 1.1 从 reqVO 中，读取公共变量
        Long startUserId = loginUserId; // 流程发起人
        HistoricProcessInstance historicProcessInstance = null; // 流程实例
        ProcessInstance processInstance = null; // 流程
        Integer processInstanceStatus = BpmProcessInstanceStatusEnum.NOT_START.getStatus(); // 流程状态
        Map<String, Object> processVariables = reqVO.getProcessVariables(); // 流程变量
        // 1.2 如果是流程已发起的场景，则使用流程实例的数据
        if (reqVO.getProcessInstanceId() != null) {
            historicProcessInstance = getHistoricProcessInstance(reqVO.getProcessInstanceId());
            if (historicProcessInstance == null) {
                throw exception(ErrorCodeConstants.PROCESS_INSTANCE_NOT_EXISTS);
            }
            processInstance = getProcessInstance(historicProcessInstance.getId());
            startUserId = Long.valueOf(historicProcessInstance.getStartUserId());
            processInstanceStatus = FlowableUtils.getProcessInstanceStatus(historicProcessInstance);
            processVariables = historicProcessInstance.getProcessVariables();
        }
        // 1.3 读取其它相关数据
        ProcessDefinition processDefinition = processDefinitionService.getProcessDefinition(
                historicProcessInstance != null ? historicProcessInstance.getProcessDefinitionId() : reqVO.getProcessDefinitionId());
        BpmProcessDefinitionInfoDO processDefinitionInfo = processDefinitionService.getProcessDefinitionInfo(processDefinition.getId());
        BpmnModel bpmnModel = processDefinitionService.getProcessDefinitionBpmnModel(processDefinition.getId());

        // 2.1 已结束 + 进行中的活动节点
        List<ActivityNode> endActivityNodes = null; // 已结束的审批信息
        List<ActivityNode> runActivityNodes = null; // 进行中的审批信息
        List<HistoricActivityInstance> activities = null; // 流程实例列表
        if (reqVO.getProcessInstanceId() != null) {
            activities = taskService.getActivityListByProcessInstanceId(reqVO.getProcessInstanceId());
            List<HistoricTaskInstance> tasks = taskService.getTaskListByProcessInstanceId(reqVO.getProcessInstanceId(), true);
            endActivityNodes = getEndActivityNodeList(startUserId, processDefinitionInfo,
                    historicProcessInstance, processInstanceStatus, activities, tasks);
            runActivityNodes = getRunApproveNodeList(startUserId, bpmnModel, processInstance, activities, tasks);
        }

        // 2.2 流程已经结束，直接 return，无需预测
        if (BpmProcessInstanceStatusEnum.isProcessEndStatus(processInstanceStatus)) {
            return buildApprovalDetail(reqVO, bpmnModel, processDefinition, processDefinitionInfo, historicProcessInstance, processInstanceStatus,
                    endActivityNodes, runActivityNodes, null, null);
        }

        // 3.1 计算当前登录用户的待办任务
        // TODO @jason：有一个极端情况，如果一个用户有 2 个 task A 和 B，A 已经通过，B 需要审核。这个时，通过 A 进来，todo 拿到 B，会不会表单权限不一致哈。
        BpmTaskRespVO todoTask = taskService.getFirstTodoTask(loginUserId, reqVO.getProcessInstanceId());

        // 3.2 预测未运行节点的审批信息
        List<ActivityNode> simulateActivityNodes = getSimulateApproveNodeList(startUserId, bpmnModel, processDefinitionInfo,
                processInstance, processVariables, activities);

        // 4. 拼接最终数据
        return buildApprovalDetail(reqVO, bpmnModel, processDefinition, processDefinitionInfo, historicProcessInstance, processInstanceStatus,
                endActivityNodes, runActivityNodes, simulateActivityNodes, todoTask);
    }

    /**
     * 拼接审批详情的最终数据
     *
     * 主要是，拼接审批人的用户信息、部门信息
     */
    private BpmApprovalDetailRespVO buildApprovalDetail(BpmApprovalDetailReqVO reqVO,
                                                        BpmnModel bpmnModel,
                                                        ProcessDefinition processDefinition,
                                                        BpmProcessDefinitionInfoDO processDefinitionInfo,
                                                        HistoricProcessInstance processInstance,
                                                        Integer processInstanceStatus,
                                                        List<ActivityNode> endApprovalNodeInfos,
                                                        List<ActivityNode> runningApprovalNodeInfos,
                                                        List<ActivityNode> simulateApprovalNodeInfos,
                                                        BpmTaskRespVO todoTask) {
        // 1. 获取所有需要读取用户信息的 userIds
        List<ActivityNode> approveNodes = newArrayList(asList(endApprovalNodeInfos, runningApprovalNodeInfos, simulateApprovalNodeInfos));
        Set<Long> userIds = BpmProcessInstanceConvert.INSTANCE.parseUserIds(processInstance, approveNodes, todoTask);
        Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(userIds);
        Map<Long, DeptRespDTO> deptMap = deptApi.getDeptMap(convertSet(userMap.values(), AdminUserRespDTO::getDeptId));

        // 2. 表单权限
        Map<String, String> formFieldsPermission = getFormFieldsPermission(bpmnModel, reqVO.getActivityId(), reqVO.getTaskId());

        // 3. 拼接数据
        return BpmProcessInstanceConvert.INSTANCE.buildApprovalDetail(bpmnModel, processDefinition, processDefinitionInfo, processInstance,
                processInstanceStatus, approveNodes, todoTask, formFieldsPermission, userMap, deptMap);
    }

    /**
     * 获得【已结束】的活动节点们
     */
    private List<ActivityNode> getEndActivityNodeList(Long startUserId,
                                                      BpmProcessDefinitionInfoDO processDefinitionInfo,
                                                      HistoricProcessInstance historicProcessInstance, Integer processInstanceStatus,
                                                      List<HistoricActivityInstance> activities, List<HistoricTaskInstance> tasks) {
        // 遍历 tasks 列表，只处理已结束的 UserTask
        // 为什么不通过 activities 呢？因为，加签场景下，它只存在于 tasks，没有 activities，导致如果遍历 activities 的话，它无法成为一个节点
        List<HistoricTaskInstance> endTasks = filterList(tasks, task -> task.getEndTime() != null);
        List<ActivityNode> approvalNodes = convertList(endTasks, task -> {
            ActivityNode activityNode = new ActivityNode().setId(task.getTaskDefinitionKey()).setName(task.getName())
                    .setNodeType(START_USER_NODE_ID.equals(task.getTaskDefinitionKey()) ?
                            BpmSimpleModelNodeType.START_USER_NODE.getType() : BpmSimpleModelNodeType.APPROVE_NODE.getType())
                    .setStatus(FlowableUtils.getTaskStatus(task))
                    .setStartTime(DateUtils.of(task.getCreateTime())).setEndTime(DateUtils.of(task.getEndTime()))
                    .setTasks(singletonList(BpmProcessInstanceConvert.INSTANCE.buildApprovalTaskInfo(task)));
            // 如果是取消状态，则跳过
            if (BpmTaskStatusEnum.isCancelStatus(activityNode.getStatus())) {
                return null;
            }
            return activityNode;
        });

        // 遍历 activities，只处理已结束的 StartEvent、EndEvent
        List<HistoricActivityInstance> endActivities = filterList(activities, activity -> activity.getEndTime() != null
                && (StrUtil.equalsAny(activity.getActivityType(), ELEMENT_EVENT_START, ELEMENT_EVENT_END)));
        endActivities.forEach(activity -> {
            // StartEvent：只处理 BPMN 的场景。因为，SIMPLE 情况下，已经有 START_USER_NODE 节点
            if (ELEMENT_EVENT_START.equals(activity.getActivityType())
                    && BpmModelTypeEnum.BPMN.getType().equals(processDefinitionInfo.getModelType())) {
                ActivityNodeTask startTask = new ActivityNodeTask().setId(BpmnModelConstants.START_USER_NODE_ID)
                        .setAssignee(startUserId).setStatus(BpmTaskStatusEnum.APPROVE.getStatus());
                ActivityNode startNode = new ActivityNode().setId(startTask.getId())
                        .setName(BpmSimpleModelNodeType.START_USER_NODE.getName())
                        .setNodeType(BpmSimpleModelNodeType.START_USER_NODE.getType())
                        .setStatus(startTask.getStatus()).setTasks(ListUtil.of(startTask))
                        .setStartTime(DateUtils.of(activity.getStartTime())).setEndTime(DateUtils.of(activity.getEndTime()));
                approvalNodes.add(0, startNode);
                return;
            }
            // EndEvent
            if (ELEMENT_EVENT_END.equals(activity.getActivityType())) {
                if (BpmProcessInstanceStatusEnum.isRejectStatus(processInstanceStatus)) {
                    // 拒绝情况下，不需要展示 EndEvent 结束节点。原因是：前端已经展示 x 效果，无需重复展示
                    return;
                }
                ActivityNode endNode = new ActivityNode().setId(activity.getId())
                        .setName(BpmSimpleModelNodeType.END_NODE.getName())
                        .setNodeType(BpmSimpleModelNodeType.END_NODE.getType()).setStatus(processInstanceStatus)
                        .setStartTime(DateUtils.of(activity.getStartTime())).setEndTime(DateUtils.of(activity.getEndTime()));
                String reason = FlowableUtils.getProcessInstanceReason(historicProcessInstance);
                if (StrUtil.isNotEmpty(reason)) {
                    endNode.setTasks(singletonList(new ActivityNodeTask().setId(endNode.getId())
                            .setStatus(endNode.getStatus()).setReason(reason)));
                }
                approvalNodes.add(endNode);
            }
        });
        return approvalNodes;
    }

    /**
     * 获得【进行中】的活动节点们
     */
    private List<ActivityNode> getRunApproveNodeList(Long startUserId,
                                                     BpmnModel bpmnModel,
                                                     ProcessInstance processInstance,
                                                     List<HistoricActivityInstance> activities,
                                                     List<HistoricTaskInstance> tasks) {
        // 构建运行中的任务，基于 activityId 分组
        List<HistoricActivityInstance> runActivities = filterList(activities, activity -> activity.getEndTime() == null
                && (StrUtil.equalsAny(activity.getActivityType(), ELEMENT_TASK_USER)));
        Map<String, List<HistoricActivityInstance>> runningTaskMap = convertMultiMap(runActivities, HistoricActivityInstance::getActivityId);

        // 按照 activityId 分组，构建 ApprovalNodeInfo 节点
        Map<String, HistoricTaskInstance> taskMap = convertMap(tasks, HistoricTaskInstance::getId);
        return convertList(runningTaskMap.entrySet(), entry -> {
            String activityId = entry.getKey();
            List<HistoricActivityInstance> taskActivities = entry.getValue();
            // 构建活动节点
            HistoricActivityInstance firstActivity = CollUtil.getFirst(taskActivities); // 取第一个任务，会签/或签的任务，开始时间相同
            ActivityNode activityNode = new ActivityNode().setId(firstActivity.getActivityId()).setName(firstActivity.getActivityName())
                    .setNodeType(BpmSimpleModelNodeType.APPROVE_NODE.getType()).setStatus(BpmTaskStatusEnum.RUNNING.getStatus())
                    .setTasks(new ArrayList<>());
            // 处理每个任务的 tasks 属性
            for (HistoricActivityInstance activity : taskActivities) {
                HistoricTaskInstance task = taskMap.get(activity.getTaskId());
                activityNode.getTasks().add(BpmProcessInstanceConvert.INSTANCE.buildApprovalTaskInfo(task));
                // 加签子任务
                List<HistoricTaskInstance> childrenTasks = taskService.getAllChildrenTaskListByParentTaskId(activity.getTaskId(), tasks);
                if (CollUtil.isNotEmpty(childrenTasks)) {
                    activityNode.getTasks().addAll(convertList(childrenTasks, BpmProcessInstanceConvert.INSTANCE::buildApprovalTaskInfo));
                }
            }

            // 处理每个任务的 candidateUsers 属性：如果是依次审批，需要预测它的后续审批人。因为 Task 是审批完一个，创建一个新的 Task
            FlowElement flowNode = BpmnModelUtils.getFlowElementById(bpmnModel, activityId);
            if (BpmnModelUtils.isSequentialUserTask(flowNode)) {
                List<Long> candidateUserIds = getTaskCandidateUserList(startUserId, processInstance,
                        flowNode.getId(), BpmnModelUtils.parseCandidateStrategy(flowNode), BpmnModelUtils.parseCandidateParam(flowNode));
                // 截取当前审批人位置后面的候选人，不包含当前审批人
                ActivityNodeTask approvalTaskInfo = CollUtil.getFirst(activityNode.getTasks());
                Assert.notNull(approvalTaskInfo, "任务不能为空");
                int index = CollUtil.indexOf(candidateUserIds, userId -> userId.equals(approvalTaskInfo.getAssignee()));
                activityNode.setCandidateUserIds(CollUtil.sub(candidateUserIds, index + 1, candidateUserIds.size()));
            }
            return activityNode;
        });
    }

    /**
     * 获得【预测（未来）】的活动节点们
     */
    private List<ActivityNode> getSimulateApproveNodeList(Long startUserId,
                                                          BpmnModel bpmnModel,
                                                          BpmProcessDefinitionInfoDO processDefinitionInfo,
                                                          ProcessInstance processInstance,
                                                          Map<String, Object> processVariable,
                                                          List<HistoricActivityInstance> activities) {
        // TODO @芋艿：【可优化】在驳回场景下，未来的预测准确性不高。原因是，驳回后，HistoricActivityInstance 包括了历史的操作，不是只有 startEvent 到当前节点的记录
        Set<String> runActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId);
        // 情况一：BPMN 设计器
        if (Objects.equals(BpmModelTypeEnum.BPMN.getType(), processDefinitionInfo.getModelType())) {
            List<FlowElement> flowElements = BpmnModelUtils.simulateProcess(bpmnModel, processVariable);
            return convertList(flowElements, flowElement -> buildNotRunApproveNodeForBpmn(startUserId, processInstance, flowElement, runActivityIds));
        }
        // 情况二：SIMPLE 设计器
        if (Objects.equals(BpmModelTypeEnum.SIMPLE.getType(), processDefinitionInfo.getModelType())) {
            BpmSimpleModelNodeVO simpleModel = JsonUtils.parseObject(processDefinitionInfo.getSimpleModel(), BpmSimpleModelNodeVO.class);
            List<BpmSimpleModelNodeVO> simpleNodes = SimpleModelUtils.simulateProcess(simpleModel, processVariable);
            return convertList(simpleNodes, simpleNode -> buildNotRunApproveNodeForSimple(startUserId, processInstance, simpleNode, runActivityIds));
        }
        throw new IllegalArgumentException("未知设计器类型：" + processDefinitionInfo.getModelType());
    }

    private ActivityNode buildNotRunApproveNodeForSimple(Long startUserId, ProcessInstance processInstance,
                                                         BpmSimpleModelNodeVO node, Set<String> runActivityIds) {
        // TODO @芋艿：【可优化】在驳回场景下，未来的预测准确性不高。原因是，驳回后，HistoricActivityInstance 包括了历史的操作，不是只有 startEvent 到当前节点的记录
        if (runActivityIds.contains(node.getId())) {
            return null;
        }
        ActivityNode activityNode = new ActivityNode().setId(node.getId()).setName(node.getName())
                .setNodeType(node.getType()).setStatus(BpmTaskStatusEnum.NOT_START.getStatus());

        // 1. 开始节点/审批节点
        if (ObjectUtils.equalsAny(node.getType(),
                BpmSimpleModelNodeType.START_USER_NODE.getType(),
                BpmSimpleModelNodeType.APPROVE_NODE.getType())) {
            Integer candidateStrategy = BpmSimpleModelNodeType.START_USER_NODE.getType().equals(node.getType()) ?
                    BpmTaskCandidateStrategyEnum.START_USER.getStrategy() : node.getCandidateStrategy();
            if (candidateStrategy != null) {
                activityNode.setCandidateUserIds(getTaskCandidateUserList(startUserId, processInstance,
                        node.getId(), candidateStrategy, node.getCandidateParam()));
            }
            return activityNode;
        }

        // 2. 结束节点
        if (BpmSimpleModelNodeType.END_NODE.getType().equals(node.getType())) {
            return activityNode;
        }

        // 3. 抄送节点 TODO @jason：抄送节点
        return null;
    }

    private ActivityNode buildNotRunApproveNodeForBpmn(Long startUserId, ProcessInstance processInstance,
                                                       FlowElement node, Set<String> runActivityIds) {
        if (runActivityIds.contains(node.getId())) {
            return null;
        }
        ActivityNode activityNode = new ActivityNode().setId(node.getId()).setStatus(BpmTaskStatusEnum.NOT_START.getStatus());

        // 1. 开始节点
        if (node instanceof StartEvent) {
            return activityNode.setName(BpmSimpleModelNodeType.START_USER_NODE.getName())
                    .setNodeType(BpmSimpleModelNodeType.START_USER_NODE.getType());
        }

        // 2. 审批节点
        if (node instanceof UserTask) {
            return activityNode.setName(node.getName()).setNodeType(BpmSimpleModelNodeType.APPROVE_NODE.getType())
                    .setCandidateUserIds(getTaskCandidateUserList(startUserId, processInstance, node.getId(),
                            BpmnModelUtils.parseCandidateStrategy(node), BpmnModelUtils.parseCandidateParam(node)));
        }

        // 3. 结束节点
        if (node instanceof EndEvent) {
            return activityNode.setName(BpmSimpleModelNodeType.END_NODE.getName())
                    .setNodeType(BpmSimpleModelNodeType.END_NODE.getType());
        }
        return null;
    }

    private List<Long> getTaskCandidateUserList(Long startUserId, ProcessInstance processInstance,
                                               String activityId, Integer candidateStrategy, String candidateParam) {
        BpmTaskCandidateStrategy taskCandidateStrategy = bpmTaskCandidateInvoker.getCandidateStrategy(candidateStrategy);
        return new ArrayList<>(taskCandidateStrategy.calculateUsers(startUserId, processInstance, activityId, candidateParam));
    }

    @Override
    public BpmProcessInstanceBpmnModelViewRespVO getProcessInstanceBpmnModelView(String id) {
        // 1.1 获得流程实例
        HistoricProcessInstance processInstance = getHistoricProcessInstance(id);
        if (processInstance == null) {
            return null;
        }
        // 1.2 获得流程定义
        BpmnModel bpmnModel = processDefinitionService.getProcessDefinitionBpmnModel(processInstance.getProcessDefinitionId());
        if (bpmnModel == null) {
            return null;
        }
        // 1.3 获得流程实例对应的活动实例列表 + 任务列表
        List<HistoricActivityInstance> activities = taskService.getActivityListByProcessInstanceId(id);
        List<HistoricTaskInstance> tasks = taskService.getTaskListByProcessInstanceId(id, true);

        // 2.1 拼接进度信息
        Set<String> unfinishedTaskActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId,
                activityInstance -> activityInstance.getEndTime() == null);
        Set<String> finishedTaskActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId,
                activityInstance -> activityInstance.getEndTime() != null
                        && ObjectUtil.notEqual(activityInstance.getActivityType(), BpmnXMLConstants.ELEMENT_SEQUENCE_FLOW));
        Set<String> finishedSequenceFlowActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId,
                activityInstance -> activityInstance.getEndTime() != null
                        && ObjectUtil.equals(activityInstance.getActivityType(), BpmnXMLConstants.ELEMENT_SEQUENCE_FLOW));
        // 特殊：会签情况下，会有部分已完成（审批）、部分未完成（待审批），此时需要 finishedTaskActivityIds 移除掉
        unfinishedTaskActivityIds.removeAll(finishedTaskActivityIds);
        // 特殊：如果流程实例被拒绝，则需要计算是哪个活动节点。
        // 注意，只取最后一个。因为会存在多次拒绝的情况，拒绝驳回到指定节点
        Set<String> rejectTaskActivityIds = CollUtil.newHashSet();
        if (BpmProcessInstanceStatusEnum.isRejectStatus(FlowableUtils.getProcessInstanceStatus(processInstance))) {
            tasks.stream()
                    .filter(task -> BpmTaskStatusEnum.isRejectStatus(FlowableUtils.getTaskStatus(task)))
                    .max(Comparator.comparing(HistoricTaskInstance::getEndTime))
                    .ifPresent(reject -> rejectTaskActivityIds.add(reject.getTaskDefinitionKey()));
            finishedTaskActivityIds.removeAll(rejectTaskActivityIds);
        }

        // 2.2 拼接基础信息
        Set<Long> userIds = BpmProcessInstanceConvert.INSTANCE.parseUserIds02(processInstance, tasks);
        Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(userIds);
        Map<Long, DeptRespDTO> deptMap = deptApi.getDeptMap(convertSet(userMap.values(), AdminUserRespDTO::getDeptId));
        return BpmProcessInstanceConvert.INSTANCE.buildProcessInstanceBpmnModelView(processInstance, tasks, bpmnModel,
                unfinishedTaskActivityIds, finishedTaskActivityIds, finishedSequenceFlowActivityIds, rejectTaskActivityIds,
                userMap, deptMap);
    }

    // ========== Update 写入相关方法 ==========

    @Override
    @Transactional(rollbackFor = Exception.class)
    public String createProcessInstance(Long userId, @Valid BpmProcessInstanceCreateReqVO createReqVO) {
        // 获得流程定义
        ProcessDefinition definition = processDefinitionService.getProcessDefinition(createReqVO.getProcessDefinitionId());
        // 发起流程
        return createProcessInstance0(userId, definition, createReqVO.getVariables(), null,
                createReqVO.getStartUserSelectAssignees());
    }

    @Override
    public String createProcessInstance(Long userId, @Valid BpmProcessInstanceCreateReqDTO createReqDTO) {
        // 获得流程定义
        ProcessDefinition definition = processDefinitionService.getActiveProcessDefinition(createReqDTO.getProcessDefinitionKey());
        // 发起流程
        return createProcessInstance0(userId, definition, createReqDTO.getVariables(), createReqDTO.getBusinessKey(),
                createReqDTO.getStartUserSelectAssignees());
    }

    private String createProcessInstance0(Long userId, ProcessDefinition definition,
                                          Map<String, Object> variables, String businessKey,
                                          Map<String, List<Long>> startUserSelectAssignees) {
        // 1.1 校验流程定义
        if (definition == null) {
            throw exception(PROCESS_DEFINITION_NOT_EXISTS);
        }
        if (definition.isSuspended()) {
            throw exception(PROCESS_DEFINITION_IS_SUSPENDED);
        }
        BpmProcessDefinitionInfoDO processDefinitionInfo = processDefinitionService.getProcessDefinitionInfo(definition.getId());
        if (processDefinitionInfo == null) {
            throw exception(PROCESS_DEFINITION_NOT_EXISTS);
        }
        // 1.2 校验是否能够发起
        if (!processDefinitionService.canUserStartProcessDefinition(processDefinitionInfo, userId)) {
            throw exception(PROCESS_INSTANCE_START_USER_CAN_START);
        }
        // 1.3 校验发起人自选审批人
        validateStartUserSelectAssignees(definition, startUserSelectAssignees);

        // 2. 创建流程实例
        if (variables == null) {
            variables = new HashMap<>();
        }
        FlowableUtils.filterProcessInstanceFormVariable(variables); // 过滤一下，避免 ProcessInstance 系统级的变量被占用
        variables.put(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS, // 流程实例状态：审批中
                BpmProcessInstanceStatusEnum.RUNNING.getStatus());
        if (CollUtil.isNotEmpty(startUserSelectAssignees)) {
            variables.put(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_START_USER_SELECT_ASSIGNEES, startUserSelectAssignees);
        }
        ProcessInstance instance = runtimeService.createProcessInstanceBuilder()
                .processDefinitionId(definition.getId())
                .businessKey(businessKey)
                .name(definition.getName().trim())
                .variables(variables)
                .start();
        return instance.getId();
    }

    private void validateStartUserSelectAssignees(ProcessDefinition definition, Map<String, List<Long>> startUserSelectAssignees) {
        // 1. 获得发起人自选审批人的 UserTask 列表
        BpmnModel bpmnModel = processDefinitionService.getProcessDefinitionBpmnModel(definition.getId());
        List<UserTask> userTaskList = BpmTaskCandidateStartUserSelectStrategy.getStartUserSelectUserTaskList(bpmnModel);
        if (CollUtil.isEmpty(userTaskList)) {
            return;
        }

        // 2. 校验发起人自选审批人的 UserTask 是否都配置了
        userTaskList.forEach(userTask -> {
            List<Long> assignees = startUserSelectAssignees != null ? startUserSelectAssignees.get(userTask.getId()) : null;
            if (CollUtil.isEmpty(assignees)) {
                throw exception(PROCESS_INSTANCE_START_USER_SELECT_ASSIGNEES_NOT_CONFIG, userTask.getName());
            }
            Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(assignees);
            assignees.forEach(assignee -> {
                if (userMap.get(assignee) == null) {
                    throw exception(PROCESS_INSTANCE_START_USER_SELECT_ASSIGNEES_NOT_EXISTS, userTask.getName(), assignee);
                }
            });
        });
    }

    @Override
    public void cancelProcessInstanceByStartUser(Long userId, @Valid BpmProcessInstanceCancelReqVO cancelReqVO) {
        // 1.1 校验流程实例存在
        ProcessInstance instance = getProcessInstance(cancelReqVO.getId());
        if (instance == null) {
            throw exception(PROCESS_INSTANCE_CANCEL_FAIL_NOT_EXISTS);
        }
        // 1.2 只能取消自己的
        if (!Objects.equals(instance.getStartUserId(), String.valueOf(userId))) {
            throw exception(PROCESS_INSTANCE_CANCEL_FAIL_NOT_SELF);
        }

        // 2. 取消流程
        updateProcessInstanceCancel(cancelReqVO.getId(),
                BpmReasonEnum.CANCEL_PROCESS_INSTANCE_BY_START_USER.format(cancelReqVO.getReason()));
    }

    @Override
    public void cancelProcessInstanceByAdmin(Long userId, BpmProcessInstanceCancelReqVO cancelReqVO) {
        // 1.1 校验流程实例存在
        ProcessInstance instance = getProcessInstance(cancelReqVO.getId());
        if (instance == null) {
            throw exception(PROCESS_INSTANCE_CANCEL_FAIL_NOT_EXISTS);
        }

        // 2. 取消流程
        AdminUserRespDTO user = adminUserApi.getUser(userId);
        updateProcessInstanceCancel(cancelReqVO.getId(),
                BpmReasonEnum.CANCEL_PROCESS_INSTANCE_BY_ADMIN.format(user.getNickname(), cancelReqVO.getReason()));
    }

    private void updateProcessInstanceCancel(String id, String reason) {
        // 1. 更新流程实例 status
        runtimeService.setVariable(id, BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS,
                BpmProcessInstanceStatusEnum.CANCEL.getStatus());
        runtimeService.setVariable(id, BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_REASON, reason);

        // 2. 结束流程
        taskService.moveTaskToEnd(id);
    }

    @Override
    public void updateProcessInstanceReject(ProcessInstance processInstance, String reason) {
        runtimeService.setVariable(processInstance.getProcessInstanceId(), BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS,
                BpmProcessInstanceStatusEnum.REJECT.getStatus());
        runtimeService.setVariable(processInstance.getProcessInstanceId(), BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_REASON,
                BpmReasonEnum.REJECT_TASK.format(reason));
    }

    // ========== Event 事件相关方法 ==========

    @Override
    public void processProcessInstanceCompleted(ProcessInstance instance) {
        // 注意：需要基于 instance 设置租户编号，避免 Flowable 内部异步时，丢失租户编号
        FlowableUtils.execute(instance.getTenantId(), () -> {
            // 1.1 获取当前状态
            Integer status = (Integer) instance.getProcessVariables().get(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS);
            String reason = (String) instance.getProcessVariables().get(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_REASON);
            // 1.2 当流程状态还是审批状态中，说明审批通过了，则变更下它的状态
            // 为什么这么处理？因为流程完成，并且完成了，说明审批通过了
            if (Objects.equals(status, BpmProcessInstanceStatusEnum.RUNNING.getStatus())) {
                status = BpmProcessInstanceStatusEnum.APPROVE.getStatus();
                runtimeService.setVariable(instance.getId(), BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS, status);
            }

            // 2. 发送对应的消息通知
            if (Objects.equals(status, BpmProcessInstanceStatusEnum.APPROVE.getStatus())) {
                messageService.sendMessageWhenProcessInstanceApprove(BpmProcessInstanceConvert.INSTANCE.buildProcessInstanceApproveMessage(instance));
            } else if (Objects.equals(status, BpmProcessInstanceStatusEnum.REJECT.getStatus())) {
                messageService.sendMessageWhenProcessInstanceReject(
                        BpmProcessInstanceConvert.INSTANCE.buildProcessInstanceRejectMessage(instance, reason));
            }

            // 3. 发送流程实例的状态事件
            processInstanceEventPublisher.sendProcessInstanceResultEvent(
                    BpmProcessInstanceConvert.INSTANCE.buildProcessInstanceStatusEvent(this, instance, status));
        });
    }

}
 \ No newline at end of file
+package cn.iocoder.yudao.module.bpm.service.task;

import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.collection.ListUtil;
import cn.hutool.core.lang.Assert;
import cn.hutool.core.util.ArrayUtil;
import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.StrUtil;
import cn.iocoder.yudao.framework.common.pojo.PageResult;
import cn.iocoder.yudao.framework.common.util.date.DateUtils;
import cn.iocoder.yudao.framework.common.util.json.JsonUtils;
import cn.iocoder.yudao.framework.common.util.object.ObjectUtils;
import cn.iocoder.yudao.framework.common.util.object.PageUtils;
import cn.iocoder.yudao.module.bpm.api.task.dto.BpmProcessInstanceCreateReqDTO;
import cn.iocoder.yudao.module.bpm.controller.admin.definition.vo.model.simple.BpmSimpleModelNodeVO;
import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.*;
import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.BpmApprovalDetailRespVO.ActivityNodeTask;
import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.task.BpmTaskRespVO;
import cn.iocoder.yudao.module.bpm.convert.task.BpmProcessInstanceConvert;
import cn.iocoder.yudao.module.bpm.dal.dataobject.definition.BpmProcessDefinitionInfoDO;
import cn.iocoder.yudao.module.bpm.enums.ErrorCodeConstants;
import cn.iocoder.yudao.module.bpm.enums.definition.BpmModelTypeEnum;
import cn.iocoder.yudao.module.bpm.enums.definition.BpmSimpleModelNodeType;
import cn.iocoder.yudao.module.bpm.enums.task.BpmProcessInstanceStatusEnum;
import cn.iocoder.yudao.module.bpm.enums.task.BpmReasonEnum;
import cn.iocoder.yudao.module.bpm.enums.task.BpmTaskStatusEnum;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateInvoker;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.dept.BpmTaskCandidateStartUserSelectStrategy;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnModelConstants;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnVariableConstants;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.event.BpmProcessInstanceEventPublisher;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.BpmnModelUtils;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.FlowableUtils;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.SimpleModelUtils;
import cn.iocoder.yudao.module.bpm.service.definition.BpmProcessDefinitionService;
import cn.iocoder.yudao.module.bpm.service.message.BpmMessageService;
import cn.iocoder.yudao.module.system.api.dept.DeptApi;
import cn.iocoder.yudao.module.system.api.dept.dto.DeptRespDTO;
import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
import jakarta.annotation.Resource;
import jakarta.validation.Valid;
import lombok.extern.slf4j.Slf4j;
import org.flowable.bpmn.constants.BpmnXMLConstants;
import org.flowable.bpmn.model.*;
import org.flowable.engine.HistoryService;
import org.flowable.engine.RuntimeService;
import org.flowable.engine.history.HistoricActivityInstance;
import org.flowable.engine.history.HistoricProcessInstance;
import org.flowable.engine.history.HistoricProcessInstanceQuery;
import org.flowable.engine.repository.ProcessDefinition;
import org.flowable.engine.runtime.ProcessInstance;
import org.flowable.task.api.history.HistoricTaskInstance;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.validation.annotation.Validated;

import java.util.*;

import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.*;
import static cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.BpmApprovalDetailRespVO.ActivityNode;
import static cn.iocoder.yudao.module.bpm.enums.ErrorCodeConstants.*;
import static cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnModelConstants.START_USER_NODE_ID;
import static java.util.Arrays.asList;
import static java.util.Collections.singletonList;
import static org.flowable.bpmn.constants.BpmnXMLConstants.*;

/**
 * 流程实例 Service 实现类
 * <p>
 * ProcessDefinition & ProcessInstance & Execution & Task 的关系：
 * 1. <a href="https://blog.csdn.net/bobozai86/article/details/105210414" />
 * <p>
 * HistoricProcessInstance & ProcessInstance 的关系：
 * 1. <a href=" https://my.oschina.net/843294669/blog/71902" />
 * <p>
 * 简单来说，前者 = 历史 + 运行中的流程实例，后者仅是运行中的流程实例
 *
 * @author 芋道源码
 */
@Service
@Validated
@Slf4j
public class BpmProcessInstanceServiceImpl implements BpmProcessInstanceService {

    @Resource
    private RuntimeService runtimeService;
    @Resource
    private HistoryService historyService;

    @Resource
    private BpmProcessDefinitionService processDefinitionService;
    @Resource
    @Lazy // 避免循环依赖
    private BpmTaskService taskService;
    @Resource
    private BpmMessageService messageService;

    @Resource
    private AdminUserApi adminUserApi;
    @Resource
    private DeptApi deptApi;

    @Resource
    private BpmProcessInstanceEventPublisher processInstanceEventPublisher;

    @Resource
    private BpmTaskCandidateInvoker taskCandidateInvoker;

    // ========== Query 查询相关方法 ==========

    @Override
    public ProcessInstance getProcessInstance(String id) {
        return runtimeService.createProcessInstanceQuery()
                .includeProcessVariables()
                .processInstanceId(id)
                .singleResult();
    }

    @Override
    public List<ProcessInstance> getProcessInstances(Set<String> ids) {
        return runtimeService.createProcessInstanceQuery().processInstanceIds(ids).list();
    }

    @Override
    public HistoricProcessInstance getHistoricProcessInstance(String id) {
        return historyService.createHistoricProcessInstanceQuery().processInstanceId(id).includeProcessVariables().singleResult();
    }

    @Override
    public List<HistoricProcessInstance> getHistoricProcessInstances(Set<String> ids) {
        return historyService.createHistoricProcessInstanceQuery().processInstanceIds(ids).list();
    }

    @Override
    public PageResult<HistoricProcessInstance> getProcessInstancePage(Long userId,
                                                                      BpmProcessInstancePageReqVO pageReqVO) {
        // 通过 BpmProcessInstanceExtDO 表，先查询到对应的分页
        HistoricProcessInstanceQuery processInstanceQuery = historyService.createHistoricProcessInstanceQuery()
                .includeProcessVariables()
                .processInstanceTenantId(FlowableUtils.getTenantId())
                .orderByProcessInstanceStartTime().desc();
        if (userId != null) { // 【我的流程】菜单时，需要传递该字段
            processInstanceQuery.startedBy(String.valueOf(userId));
        } else if (pageReqVO.getStartUserId() != null) { // 【管理流程】菜单时，才会传递该字段
            processInstanceQuery.startedBy(String.valueOf(pageReqVO.getStartUserId()));
        }
        if (StrUtil.isNotEmpty(pageReqVO.getName())) {
            processInstanceQuery.processInstanceNameLike("%" + pageReqVO.getName() + "%");
        }
        if (StrUtil.isNotEmpty(pageReqVO.getProcessDefinitionKey())) {
            processInstanceQuery.processDefinitionKey(pageReqVO.getProcessDefinitionKey());
        }
        if (StrUtil.isNotEmpty(pageReqVO.getCategory())) {
            processInstanceQuery.processDefinitionCategory(pageReqVO.getCategory());
        }
        if (pageReqVO.getStatus() != null) {
            processInstanceQuery.variableValueEquals(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS, pageReqVO.getStatus());
        }
        if (ArrayUtil.isNotEmpty(pageReqVO.getCreateTime())) {
            processInstanceQuery.startedAfter(DateUtils.of(pageReqVO.getCreateTime()[0]));
            processInstanceQuery.startedBefore(DateUtils.of(pageReqVO.getCreateTime()[1]));
        }
        // 查询数量
        long processInstanceCount = processInstanceQuery.count();
        if (processInstanceCount == 0) {
            return PageResult.empty(processInstanceCount);
        }
        // 查询列表
        List<HistoricProcessInstance> processInstanceList = processInstanceQuery.listPage(PageUtils.getStart(pageReqVO), pageReqVO.getPageSize());
        return new PageResult<>(processInstanceList, processInstanceCount);
    }


    private Map<String, String> getFormFieldsPermission(BpmnModel bpmnModel,
                                                        String activityId, String taskId) {
        // 1. 获取流程活动编号。流程活动 Id 为空事，从流程任务中获取流程活动 Id
        if (StrUtil.isEmpty(activityId) && StrUtil.isNotEmpty(taskId)) {
            activityId = Optional.ofNullable(taskService.getHistoricTask(taskId))
                    .map(HistoricTaskInstance::getTaskDefinitionKey).orElse(null);
        }
        if (StrUtil.isEmpty(activityId)) {
            return null;
        }

        // 2. 从 BpmnModel 中解析表单字段权限
        return BpmnModelUtils.parseFormFieldsPermission(bpmnModel, activityId);
    }

    @Override
    public BpmApprovalDetailRespVO getApprovalDetail(Long loginUserId, BpmApprovalDetailReqVO reqVO) {
        // 1.1 从 reqVO 中，读取公共变量
        Long startUserId = loginUserId; // 流程发起人
        HistoricProcessInstance historicProcessInstance = null; // 流程实例
        Integer processInstanceStatus = BpmProcessInstanceStatusEnum.NOT_START.getStatus(); // 流程状态
        Map<String, Object> processVariables = reqVO.getProcessVariables(); // 流程变量
        // 1.2 如果是流程已发起的场景，则使用流程实例的数据
        if (reqVO.getProcessInstanceId() != null) {
            historicProcessInstance = getHistoricProcessInstance(reqVO.getProcessInstanceId());
            if (historicProcessInstance == null) {
                throw exception(ErrorCodeConstants.PROCESS_INSTANCE_NOT_EXISTS);
            }
            startUserId = Long.valueOf(historicProcessInstance.getStartUserId());
            processInstanceStatus = FlowableUtils.getProcessInstanceStatus(historicProcessInstance);
            processVariables = historicProcessInstance.getProcessVariables();
        }
        // 1.3 读取其它相关数据
        ProcessDefinition processDefinition = processDefinitionService.getProcessDefinition(
                historicProcessInstance != null ? historicProcessInstance.getProcessDefinitionId() : reqVO.getProcessDefinitionId());
        BpmProcessDefinitionInfoDO processDefinitionInfo = processDefinitionService.getProcessDefinitionInfo(processDefinition.getId());
        BpmnModel bpmnModel = processDefinitionService.getProcessDefinitionBpmnModel(processDefinition.getId());

        // 2.1 已结束 + 进行中的活动节点
        List<ActivityNode> endActivityNodes = null; // 已结束的审批信息
        List<ActivityNode> runActivityNodes = null; // 进行中的审批信息
        List<HistoricActivityInstance> activities = null; // 流程实例列表
        if (reqVO.getProcessInstanceId() != null) {
            activities = taskService.getActivityListByProcessInstanceId(reqVO.getProcessInstanceId());
            List<HistoricTaskInstance> tasks = taskService.getTaskListByProcessInstanceId(reqVO.getProcessInstanceId(), true);
            endActivityNodes = getEndActivityNodeList(startUserId, processDefinitionInfo,
                    historicProcessInstance, processInstanceStatus, activities, tasks);
            runActivityNodes = getRunApproveNodeList(startUserId, bpmnModel, processDefinition, processVariables, activities, tasks);
        }

        // 2.2 流程已经结束，直接 return，无需预测
        if (BpmProcessInstanceStatusEnum.isProcessEndStatus(processInstanceStatus)) {
            return buildApprovalDetail(reqVO, bpmnModel, processDefinition, processDefinitionInfo, historicProcessInstance,
                    processInstanceStatus, endActivityNodes, runActivityNodes, null, null);
        }

        // 3.1 计算当前登录用户的待办任务
        // TODO @jason：有一个极端情况，如果一个用户有 2 个 task A 和 B，A 已经通过，B 需要审核。这个时，通过 A 进来，todo 拿到 B，会不会表单权限不一致哈。
        BpmTaskRespVO todoTask = taskService.getFirstTodoTask(loginUserId, reqVO.getProcessInstanceId());

        // 3.2 预测未运行节点的审批信息
        List<ActivityNode> simulateActivityNodes = getSimulateApproveNodeList(startUserId, bpmnModel, processDefinitionInfo,
                processVariables, activities);

        // 4. 拼接最终数据
        return buildApprovalDetail(reqVO, bpmnModel, processDefinition, processDefinitionInfo, historicProcessInstance,
                processInstanceStatus, endActivityNodes, runActivityNodes, simulateActivityNodes, todoTask);
    }

    /**
     * 拼接审批详情的最终数据
     *
     * 主要是，拼接审批人的用户信息、部门信息
     */
    private BpmApprovalDetailRespVO buildApprovalDetail(BpmApprovalDetailReqVO reqVO,
                                                        BpmnModel bpmnModel,
                                                        ProcessDefinition processDefinition,
                                                        BpmProcessDefinitionInfoDO processDefinitionInfo,
                                                        HistoricProcessInstance processInstance,
                                                        Integer processInstanceStatus,
                                                        List<ActivityNode> endApprovalNodeInfos,
                                                        List<ActivityNode> runningApprovalNodeInfos,
                                                        List<ActivityNode> simulateApprovalNodeInfos,
                                                        BpmTaskRespVO todoTask) {
        // 1. 获取所有需要读取用户信息的 userIds
        List<ActivityNode> approveNodes = newArrayList(asList(endApprovalNodeInfos, runningApprovalNodeInfos, simulateApprovalNodeInfos));
        Set<Long> userIds = BpmProcessInstanceConvert.INSTANCE.parseUserIds(processInstance, approveNodes, todoTask);
        Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(userIds);
        Map<Long, DeptRespDTO> deptMap = deptApi.getDeptMap(convertSet(userMap.values(), AdminUserRespDTO::getDeptId));

        // 2. 表单权限
        Map<String, String> formFieldsPermission = getFormFieldsPermission(bpmnModel, reqVO.getActivityId(), reqVO.getTaskId());

        // 3. 拼接数据
        return BpmProcessInstanceConvert.INSTANCE.buildApprovalDetail(bpmnModel, processDefinition, processDefinitionInfo, processInstance,
                processInstanceStatus, approveNodes, todoTask, formFieldsPermission, userMap, deptMap);
    }

    /**
     * 获得【已结束】的活动节点们
     */
    private List<ActivityNode> getEndActivityNodeList(Long startUserId,
                                                      BpmProcessDefinitionInfoDO processDefinitionInfo,
                                                      HistoricProcessInstance historicProcessInstance, Integer processInstanceStatus,
                                                      List<HistoricActivityInstance> activities, List<HistoricTaskInstance> tasks) {
        // 遍历 tasks 列表，只处理已结束的 UserTask
        // 为什么不通过 activities 呢？因为，加签场景下，它只存在于 tasks，没有 activities，导致如果遍历 activities 的话，它无法成为一个节点
        List<HistoricTaskInstance> endTasks = filterList(tasks, task -> task.getEndTime() != null);
        List<ActivityNode> approvalNodes = convertList(endTasks, task -> {
            ActivityNode activityNode = new ActivityNode().setId(task.getTaskDefinitionKey()).setName(task.getName())
                    .setNodeType(START_USER_NODE_ID.equals(task.getTaskDefinitionKey()) ?
                            BpmSimpleModelNodeType.START_USER_NODE.getType() : BpmSimpleModelNodeType.APPROVE_NODE.getType())
                    .setStatus(FlowableUtils.getTaskStatus(task))
                    .setStartTime(DateUtils.of(task.getCreateTime())).setEndTime(DateUtils.of(task.getEndTime()))
                    .setTasks(singletonList(BpmProcessInstanceConvert.INSTANCE.buildApprovalTaskInfo(task)));
            // 如果是取消状态，则跳过
            if (BpmTaskStatusEnum.isCancelStatus(activityNode.getStatus())) {
                return null;
            }
            return activityNode;
        });

        // 遍历 activities，只处理已结束的 StartEvent、EndEvent
        List<HistoricActivityInstance> endActivities = filterList(activities, activity -> activity.getEndTime() != null
                && (StrUtil.equalsAny(activity.getActivityType(), ELEMENT_EVENT_START, ELEMENT_EVENT_END)));
        endActivities.forEach(activity -> {
            // StartEvent：只处理 BPMN 的场景。因为，SIMPLE 情况下，已经有 START_USER_NODE 节点
            if (ELEMENT_EVENT_START.equals(activity.getActivityType())
                    && BpmModelTypeEnum.BPMN.getType().equals(processDefinitionInfo.getModelType())) {
                ActivityNodeTask startTask = new ActivityNodeTask().setId(BpmnModelConstants.START_USER_NODE_ID)
                        .setAssignee(startUserId).setStatus(BpmTaskStatusEnum.APPROVE.getStatus());
                ActivityNode startNode = new ActivityNode().setId(startTask.getId())
                        .setName(BpmSimpleModelNodeType.START_USER_NODE.getName())
                        .setNodeType(BpmSimpleModelNodeType.START_USER_NODE.getType())
                        .setStatus(startTask.getStatus()).setTasks(ListUtil.of(startTask))
                        .setStartTime(DateUtils.of(activity.getStartTime())).setEndTime(DateUtils.of(activity.getEndTime()));
                approvalNodes.add(0, startNode);
                return;
            }
            // EndEvent
            if (ELEMENT_EVENT_END.equals(activity.getActivityType())) {
                if (BpmProcessInstanceStatusEnum.isRejectStatus(processInstanceStatus)) {
                    // 拒绝情况下，不需要展示 EndEvent 结束节点。原因是：前端已经展示 x 效果，无需重复展示
                    return;
                }
                ActivityNode endNode = new ActivityNode().setId(activity.getId())
                        .setName(BpmSimpleModelNodeType.END_NODE.getName())
                        .setNodeType(BpmSimpleModelNodeType.END_NODE.getType()).setStatus(processInstanceStatus)
                        .setStartTime(DateUtils.of(activity.getStartTime())).setEndTime(DateUtils.of(activity.getEndTime()));
                String reason = FlowableUtils.getProcessInstanceReason(historicProcessInstance);
                if (StrUtil.isNotEmpty(reason)) {
                    endNode.setTasks(singletonList(new ActivityNodeTask().setId(endNode.getId())
                            .setStatus(endNode.getStatus()).setReason(reason)));
                }
                approvalNodes.add(endNode);
            }
        });
        return approvalNodes;
    }

    /**
     * 获得【进行中】的活动节点们
     */
    private List<ActivityNode> getRunApproveNodeList(Long startUserId,
                                                     BpmnModel bpmnModel,
                                                     ProcessDefinition processDefinition,
                                                     Map<String, Object> processVariables,
                                                     List<HistoricActivityInstance> activities,
                                                     List<HistoricTaskInstance> tasks) {
        // 构建运行中的任务，基于 activityId 分组
        List<HistoricActivityInstance> runActivities = filterList(activities, activity -> activity.getEndTime() == null
                && (StrUtil.equalsAny(activity.getActivityType(), ELEMENT_TASK_USER)));
        Map<String, List<HistoricActivityInstance>> runningTaskMap = convertMultiMap(runActivities, HistoricActivityInstance::getActivityId);

        // 按照 activityId 分组，构建 ApprovalNodeInfo 节点
        Map<String, HistoricTaskInstance> taskMap = convertMap(tasks, HistoricTaskInstance::getId);
        return convertList(runningTaskMap.entrySet(), entry -> {
            String activityId = entry.getKey();
            List<HistoricActivityInstance> taskActivities = entry.getValue();
            // 构建活动节点
            HistoricActivityInstance firstActivity = CollUtil.getFirst(taskActivities); // 取第一个任务，会签/或签的任务，开始时间相同
            ActivityNode activityNode = new ActivityNode().setId(firstActivity.getActivityId()).setName(firstActivity.getActivityName())
                    .setNodeType(BpmSimpleModelNodeType.APPROVE_NODE.getType()).setStatus(BpmTaskStatusEnum.RUNNING.getStatus())
                    .setTasks(new ArrayList<>());
            // 处理每个任务的 tasks 属性
            for (HistoricActivityInstance activity : taskActivities) {
                HistoricTaskInstance task = taskMap.get(activity.getTaskId());
                activityNode.getTasks().add(BpmProcessInstanceConvert.INSTANCE.buildApprovalTaskInfo(task));
                // 加签子任务
                List<HistoricTaskInstance> childrenTasks = taskService.getAllChildrenTaskListByParentTaskId(activity.getTaskId(), tasks);
                if (CollUtil.isNotEmpty(childrenTasks)) {
                    activityNode.getTasks().addAll(convertList(childrenTasks, BpmProcessInstanceConvert.INSTANCE::buildApprovalTaskInfo));
                }
            }

            // 处理每个任务的 candidateUsers 属性：如果是依次审批，需要预测它的后续审批人。因为 Task 是审批完一个，创建一个新的 Task
            FlowElement flowNode = BpmnModelUtils.getFlowElementById(bpmnModel, activityId);
            if (BpmnModelUtils.isSequentialUserTask(flowNode)) {
                List<Long> candidateUserIds = getTaskCandidateUserList(bpmnModel, flowNode.getId(),
                        startUserId, processDefinition.getId(), processVariables);
                // 截取当前审批人位置后面的候选人，不包含当前审批人
                ActivityNodeTask approvalTaskInfo = CollUtil.getFirst(activityNode.getTasks());
                Assert.notNull(approvalTaskInfo, "任务不能为空");
                int index = CollUtil.indexOf(candidateUserIds, userId -> userId.equals(approvalTaskInfo.getAssignee()));
                activityNode.setCandidateUserIds(CollUtil.sub(candidateUserIds, index + 1, candidateUserIds.size()));
            }
            return activityNode;
        });
    }

    /**
     * 获得【预测（未来）】的活动节点们
     */
    private List<ActivityNode> getSimulateApproveNodeList(Long startUserId, BpmnModel bpmnModel,
                                                          BpmProcessDefinitionInfoDO processDefinitionInfo,
                                                          Map<String, Object> processVariables,
                                                          List<HistoricActivityInstance> activities) {
        // TODO @芋艿：【可优化】在驳回场景下，未来的预测准确性不高。原因是，驳回后，HistoricActivityInstance 包括了历史的操作，不是只有 startEvent 到当前节点的记录
        Set<String> runActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId);
        // 情况一：BPMN 设计器
        if (Objects.equals(BpmModelTypeEnum.BPMN.getType(), processDefinitionInfo.getModelType())) {
            List<FlowElement> flowElements = BpmnModelUtils.simulateProcess(bpmnModel, processVariables);
            return convertList(flowElements, flowElement -> buildNotRunApproveNodeForBpmn(startUserId, bpmnModel,
                    processDefinitionInfo, processVariables, flowElement, runActivityIds));
        }
        // 情况二：SIMPLE 设计器
        if (Objects.equals(BpmModelTypeEnum.SIMPLE.getType(), processDefinitionInfo.getModelType())) {
            BpmSimpleModelNodeVO simpleModel = JsonUtils.parseObject(processDefinitionInfo.getSimpleModel(), BpmSimpleModelNodeVO.class);
            List<BpmSimpleModelNodeVO> simpleNodes = SimpleModelUtils.simulateProcess(simpleModel, processVariables);
            return convertList(simpleNodes, simpleNode -> buildNotRunApproveNodeForSimple(startUserId, bpmnModel,
                    processDefinitionInfo, processVariables, simpleNode, runActivityIds));
        }
        throw new IllegalArgumentException("未知设计器类型：" + processDefinitionInfo.getModelType());
    }

    private ActivityNode buildNotRunApproveNodeForSimple(Long startUserId, BpmnModel bpmnModel,
                                                         BpmProcessDefinitionInfoDO processDefinitionInfo, Map<String, Object> processVariables,
                                                         BpmSimpleModelNodeVO node, Set<String> runActivityIds) {
        // TODO @芋艿：【可优化】在驳回场景下，未来的预测准确性不高。原因是，驳回后，HistoricActivityInstance 包括了历史的操作，不是只有 startEvent 到当前节点的记录
        if (runActivityIds.contains(node.getId())) {
            return null;
        }
        ActivityNode activityNode = new ActivityNode().setId(node.getId()).setName(node.getName())
                .setNodeType(node.getType()).setStatus(BpmTaskStatusEnum.NOT_START.getStatus());

        // 1. 开始节点/审批节点
        if (ObjectUtils.equalsAny(node.getType(),
                BpmSimpleModelNodeType.START_USER_NODE.getType(),
                BpmSimpleModelNodeType.APPROVE_NODE.getType())) {
            List<Long> candidateUserIds = getTaskCandidateUserList(bpmnModel, node.getId(),
                    startUserId, processDefinitionInfo.getProcessDefinitionId(), processVariables);
            activityNode.setCandidateUserIds(candidateUserIds);
            return activityNode;
        }

        // 2. 结束节点
        if (BpmSimpleModelNodeType.END_NODE.getType().equals(node.getType())) {
            return activityNode;
        }

        // 3. 抄送节点 TODO @jason：抄送节点
        return null;
    }

    private ActivityNode buildNotRunApproveNodeForBpmn(Long startUserId, BpmnModel bpmnModel,
                                                       BpmProcessDefinitionInfoDO processDefinitionInfo, Map<String, Object> processVariables,
                                                       FlowElement node, Set<String> runActivityIds) {
        if (runActivityIds.contains(node.getId())) {
            return null;
        }
        ActivityNode activityNode = new ActivityNode().setId(node.getId()).setStatus(BpmTaskStatusEnum.NOT_START.getStatus());

        // 1. 开始节点
        if (node instanceof StartEvent) {
            return activityNode.setName(BpmSimpleModelNodeType.START_USER_NODE.getName())
                    .setNodeType(BpmSimpleModelNodeType.START_USER_NODE.getType());
        }

        // 2. 审批节点
        if (node instanceof UserTask) {
            List<Long> candidateUserIds = getTaskCandidateUserList(bpmnModel, node.getId(),
                    startUserId, processDefinitionInfo.getProcessDefinitionId(), processVariables);
            return activityNode.setName(node.getName()).setNodeType(BpmSimpleModelNodeType.APPROVE_NODE.getType())
                    .setCandidateUserIds(candidateUserIds);
        }

        // 3. 结束节点
        if (node instanceof EndEvent) {
            return activityNode.setName(BpmSimpleModelNodeType.END_NODE.getName())
                    .setNodeType(BpmSimpleModelNodeType.END_NODE.getType());
        }
        return null;
    }

    private List<Long> getTaskCandidateUserList(BpmnModel bpmnModel, String activityId,
                                                Long startUserId, String processDefinitionId, Map<String, Object> processVariables) {
        Set<Long> userIds = taskCandidateInvoker.calculateUsersByActivity(bpmnModel, activityId,
                startUserId, processDefinitionId, processVariables);
        return new ArrayList<>(userIds);
    }

    @Override
    public BpmProcessInstanceBpmnModelViewRespVO getProcessInstanceBpmnModelView(String id) {
        // 1.1 获得流程实例
        HistoricProcessInstance processInstance = getHistoricProcessInstance(id);
        if (processInstance == null) {
            return null;
        }
        // 1.2 获得流程定义
        BpmnModel bpmnModel = processDefinitionService.getProcessDefinitionBpmnModel(processInstance.getProcessDefinitionId());
        if (bpmnModel == null) {
            return null;
        }
        // 1.3 获得流程实例对应的活动实例列表 + 任务列表
        List<HistoricActivityInstance> activities = taskService.getActivityListByProcessInstanceId(id);
        List<HistoricTaskInstance> tasks = taskService.getTaskListByProcessInstanceId(id, true);

        // 2.1 拼接进度信息
        Set<String> unfinishedTaskActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId,
                activityInstance -> activityInstance.getEndTime() == null);
        Set<String> finishedTaskActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId,
                activityInstance -> activityInstance.getEndTime() != null
                        && ObjectUtil.notEqual(activityInstance.getActivityType(), BpmnXMLConstants.ELEMENT_SEQUENCE_FLOW));
        Set<String> finishedSequenceFlowActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId,
                activityInstance -> activityInstance.getEndTime() != null
                        && ObjectUtil.equals(activityInstance.getActivityType(), BpmnXMLConstants.ELEMENT_SEQUENCE_FLOW));
        // 特殊：会签情况下，会有部分已完成（审批）、部分未完成（待审批），此时需要 finishedTaskActivityIds 移除掉
        unfinishedTaskActivityIds.removeAll(finishedTaskActivityIds);
        // 特殊：如果流程实例被拒绝，则需要计算是哪个活动节点。
        // 注意，只取最后一个。因为会存在多次拒绝的情况，拒绝驳回到指定节点
        Set<String> rejectTaskActivityIds = CollUtil.newHashSet();
        if (BpmProcessInstanceStatusEnum.isRejectStatus(FlowableUtils.getProcessInstanceStatus(processInstance))) {
            tasks.stream()
                    .filter(task -> BpmTaskStatusEnum.isRejectStatus(FlowableUtils.getTaskStatus(task)))
                    .max(Comparator.comparing(HistoricTaskInstance::getEndTime))
                    .ifPresent(reject -> rejectTaskActivityIds.add(reject.getTaskDefinitionKey()));
            finishedTaskActivityIds.removeAll(rejectTaskActivityIds);
        }

        // 2.2 拼接基础信息
        Set<Long> userIds = BpmProcessInstanceConvert.INSTANCE.parseUserIds02(processInstance, tasks);
        Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(userIds);
        Map<Long, DeptRespDTO> deptMap = deptApi.getDeptMap(convertSet(userMap.values(), AdminUserRespDTO::getDeptId));
        return BpmProcessInstanceConvert.INSTANCE.buildProcessInstanceBpmnModelView(processInstance, tasks, bpmnModel,
                unfinishedTaskActivityIds, finishedTaskActivityIds, finishedSequenceFlowActivityIds, rejectTaskActivityIds,
                userMap, deptMap);
    }

    // ========== Update 写入相关方法 ==========

    @Override
    @Transactional(rollbackFor = Exception.class)
    public String createProcessInstance(Long userId, @Valid BpmProcessInstanceCreateReqVO createReqVO) {
        // 获得流程定义
        ProcessDefinition definition = processDefinitionService.getProcessDefinition(createReqVO.getProcessDefinitionId());
        // 发起流程
        return createProcessInstance0(userId, definition, createReqVO.getVariables(), null,
                createReqVO.getStartUserSelectAssignees());
    }

    @Override
    public String createProcessInstance(Long userId, @Valid BpmProcessInstanceCreateReqDTO createReqDTO) {
        // 获得流程定义
        ProcessDefinition definition = processDefinitionService.getActiveProcessDefinition(createReqDTO.getProcessDefinitionKey());
        // 发起流程
        return createProcessInstance0(userId, definition, createReqDTO.getVariables(), createReqDTO.getBusinessKey(),
                createReqDTO.getStartUserSelectAssignees());
    }

    private String createProcessInstance0(Long userId, ProcessDefinition definition,
                                          Map<String, Object> variables, String businessKey,
                                          Map<String, List<Long>> startUserSelectAssignees) {
        // 1.1 校验流程定义
        if (definition == null) {
            throw exception(PROCESS_DEFINITION_NOT_EXISTS);
        }
        if (definition.isSuspended()) {
            throw exception(PROCESS_DEFINITION_IS_SUSPENDED);
        }
        BpmProcessDefinitionInfoDO processDefinitionInfo = processDefinitionService.getProcessDefinitionInfo(definition.getId());
        if (processDefinitionInfo == null) {
            throw exception(PROCESS_DEFINITION_NOT_EXISTS);
        }
        // 1.2 校验是否能够发起
        if (!processDefinitionService.canUserStartProcessDefinition(processDefinitionInfo, userId)) {
            throw exception(PROCESS_INSTANCE_START_USER_CAN_START);
        }
        // 1.3 校验发起人自选审批人
        validateStartUserSelectAssignees(definition, startUserSelectAssignees);

        // 2. 创建流程实例
        if (variables == null) {
            variables = new HashMap<>();
        }
        FlowableUtils.filterProcessInstanceFormVariable(variables); // 过滤一下，避免 ProcessInstance 系统级的变量被占用
        variables.put(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS, // 流程实例状态：审批中
                BpmProcessInstanceStatusEnum.RUNNING.getStatus());
        if (CollUtil.isNotEmpty(startUserSelectAssignees)) {
            variables.put(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_START_USER_SELECT_ASSIGNEES, startUserSelectAssignees);
        }
        ProcessInstance instance = runtimeService.createProcessInstanceBuilder()
                .processDefinitionId(definition.getId())
                .businessKey(businessKey)
                .name(definition.getName().trim())
                .variables(variables)
                .start();
        return instance.getId();
    }

    private void validateStartUserSelectAssignees(ProcessDefinition definition, Map<String, List<Long>> startUserSelectAssignees) {
        // 1. 获得发起人自选审批人的 UserTask 列表
        BpmnModel bpmnModel = processDefinitionService.getProcessDefinitionBpmnModel(definition.getId());
        List<UserTask> userTaskList = BpmTaskCandidateStartUserSelectStrategy.getStartUserSelectUserTaskList(bpmnModel);
        if (CollUtil.isEmpty(userTaskList)) {
            return;
        }

        // 2. 校验发起人自选审批人的 UserTask 是否都配置了
        userTaskList.forEach(userTask -> {
            List<Long> assignees = startUserSelectAssignees != null ? startUserSelectAssignees.get(userTask.getId()) : null;
            if (CollUtil.isEmpty(assignees)) {
                throw exception(PROCESS_INSTANCE_START_USER_SELECT_ASSIGNEES_NOT_CONFIG, userTask.getName());
            }
            Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(assignees);
            assignees.forEach(assignee -> {
                if (userMap.get(assignee) == null) {
                    throw exception(PROCESS_INSTANCE_START_USER_SELECT_ASSIGNEES_NOT_EXISTS, userTask.getName(), assignee);
                }
            });
        });
    }

    @Override
    public void cancelProcessInstanceByStartUser(Long userId, @Valid BpmProcessInstanceCancelReqVO cancelReqVO) {
        // 1.1 校验流程实例存在
        ProcessInstance instance = getProcessInstance(cancelReqVO.getId());
        if (instance == null) {
            throw exception(PROCESS_INSTANCE_CANCEL_FAIL_NOT_EXISTS);
        }
        // 1.2 只能取消自己的
        if (!Objects.equals(instance.getStartUserId(), String.valueOf(userId))) {
            throw exception(PROCESS_INSTANCE_CANCEL_FAIL_NOT_SELF);
        }

        // 2. 取消流程
        updateProcessInstanceCancel(cancelReqVO.getId(),
                BpmReasonEnum.CANCEL_PROCESS_INSTANCE_BY_START_USER.format(cancelReqVO.getReason()));
    }

    @Override
    public void cancelProcessInstanceByAdmin(Long userId, BpmProcessInstanceCancelReqVO cancelReqVO) {
        // 1.1 校验流程实例存在
        ProcessInstance instance = getProcessInstance(cancelReqVO.getId());
        if (instance == null) {
            throw exception(PROCESS_INSTANCE_CANCEL_FAIL_NOT_EXISTS);
        }

        // 2. 取消流程
        AdminUserRespDTO user = adminUserApi.getUser(userId);
        updateProcessInstanceCancel(cancelReqVO.getId(),
                BpmReasonEnum.CANCEL_PROCESS_INSTANCE_BY_ADMIN.format(user.getNickname(), cancelReqVO.getReason()));
    }

    private void updateProcessInstanceCancel(String id, String reason) {
        // 1. 更新流程实例 status
        runtimeService.setVariable(id, BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS,
                BpmProcessInstanceStatusEnum.CANCEL.getStatus());
        runtimeService.setVariable(id, BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_REASON, reason);

        // 2. 结束流程
        taskService.moveTaskToEnd(id);
    }

    @Override
    public void updateProcessInstanceReject(ProcessInstance processInstance, String reason) {
        runtimeService.setVariable(processInstance.getProcessInstanceId(), BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS,
                BpmProcessInstanceStatusEnum.REJECT.getStatus());
        runtimeService.setVariable(processInstance.getProcessInstanceId(), BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_REASON,
                BpmReasonEnum.REJECT_TASK.format(reason));
    }

    // ========== Event 事件相关方法 ==========

    @Override
    public void processProcessInstanceCompleted(ProcessInstance instance) {
        // 注意：需要基于 instance 设置租户编号，避免 Flowable 内部异步时，丢失租户编号
        FlowableUtils.execute(instance.getTenantId(), () -> {
            // 1.1 获取当前状态
            Integer status = (Integer) instance.getProcessVariables().get(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS);
            String reason = (String) instance.getProcessVariables().get(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_REASON);
            // 1.2 当流程状态还是审批状态中，说明审批通过了，则变更下它的状态
            // 为什么这么处理？因为流程完成，并且完成了，说明审批通过了
            if (Objects.equals(status, BpmProcessInstanceStatusEnum.RUNNING.getStatus())) {
                status = BpmProcessInstanceStatusEnum.APPROVE.getStatus();
                runtimeService.setVariable(instance.getId(), BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS, status);
            }

            // 2. 发送对应的消息通知
            if (Objects.equals(status, BpmProcessInstanceStatusEnum.APPROVE.getStatus())) {
                messageService.sendMessageWhenProcessInstanceApprove(BpmProcessInstanceConvert.INSTANCE.buildProcessInstanceApproveMessage(instance));
            } else if (Objects.equals(status, BpmProcessInstanceStatusEnum.REJECT.getStatus())) {
                messageService.sendMessageWhenProcessInstanceReject(
                        BpmProcessInstanceConvert.INSTANCE.buildProcessInstanceRejectMessage(instance, reason));
            }

            // 3. 发送流程实例的状态事件
            processInstanceEventPublisher.sendProcessInstanceResultEvent(
                    BpmProcessInstanceConvert.INSTANCE.buildProcessInstanceStatusEvent(this, instance, status));
        });
    }

}
 \ No newline at end of file
@@ -3,7 +3,7 @@ package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate;
 import cn.hutool.core.map.MapUtil;
 import cn.iocoder.yudao.framework.common.enums.CommonStatusEnum;
 import cn.iocoder.yudao.framework.test.core.ut.BaseMockitoUnitTest;
-import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.BpmTaskCandidateUserStrategy;
+import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.user.BpmTaskCandidateUserStrategy;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmTaskCandidateStrategyEnum;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnModelConstants;
 import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
@@ -47,13 +47,13 @@ public class BpmTaskCandidateInvokerTest extends BaseMockitoUnitTest {
     @BeforeEach
     public void setUp() {
-        strategy = new BpmTaskCandidateUserStrategy(adminUserApi); // 创建strategy实例
+        strategy = new BpmTaskCandidateUserStrategy(); // 创建strategy实例
         strategyList = Collections.singletonList(strategy); // 创建strategyList
         taskCandidateInvoker = new BpmTaskCandidateInvoker(strategyList, adminUserApi);
     }
     @Test
-    public void testCalculateUsers() {
+    public void testCalculateUsersByTask() {
         // 准备参数
         String param = "1,2";
         DelegateExecution execution = mock(DelegateExecution.class);
@@ -74,7 +74,7 @@ public class BpmTaskCandidateInvokerTest extends BaseMockitoUnitTest {
         when(adminUserApi.getUserMap(eq(asSet(1L, 2L)))).thenReturn(userMap);
         // 调用
-        Set<Long> results = taskCandidateInvoker.calculateUsers(execution);
+        Set<Long> results = taskCandidateInvoker.calculateUsersByTask(execution);
         // 断言
         assertEquals(asSet(1L, 2L), results);
     }
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.dept;
+
+import cn.iocoder.yudao.framework.test.core.ut.BaseMockitoUnitTest;
+import cn.iocoder.yudao.module.system.api.dept.DeptApi;
+import cn.iocoder.yudao.module.system.api.dept.dto.DeptRespDTO;
+import org.assertj.core.util.Sets;
+import org.junit.jupiter.api.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.stubbing.Answer;
+
+import java.util.Set;
+
+import static cn.iocoder.yudao.framework.test.core.util.RandomUtils.randomPojo;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.when;
+
+public class BpmTaskCandidateDeptLeaderMultiStrategyTest extends BaseMockitoUnitTest {
+
+    @InjectMocks
+    private BpmTaskCandidateDeptLeaderMultiStrategy strategy;
+
+    @Mock
+    private DeptApi deptApi;
+
+    @Test
+    public void testCalculateUsers() {
+        // 准备参数
+        String param = "10,20|2";
+        // mock 方法
+        when(deptApi.getDept(any())).thenAnswer((Answer<DeptRespDTO>) invocationOnMock -> {
+            Long deptId = invocationOnMock.getArgument(0);
+            return randomPojo(DeptRespDTO.class, o -> o.setId(deptId).setParentId(deptId * 100).setLeaderUserId(deptId + 1));
+        });
+
+        // 调用
+        Set<Long> userIds = strategy.calculateUsers(param);
+        // 断言结果
+        assertEquals(Sets.newLinkedHashSet(11L, 1001L, 21L, 2001L), userIds);
+    }
+
+}
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.dept;
+import cn.iocoder.yudao.framework.common.util.collection.SetUtils;
 import cn.iocoder.yudao.framework.test.core.ut.BaseMockitoUnitTest;
 import cn.iocoder.yudao.module.system.api.dept.DeptApi;
 import cn.iocoder.yudao.module.system.api.dept.dto.DeptRespDTO;
+import org.assertj.core.util.Sets;
 import org.junit.jupiter.api.Test;
 import org.mockito.InjectMocks;
 import org.mockito.Mock;
 import java.util.Set;
-import static cn.iocoder.yudao.framework.common.util.collection.SetUtils.asSet;
 import static cn.iocoder.yudao.framework.test.core.util.RandomUtils.randomPojo;
 import static java.util.Arrays.asList;
 import static org.junit.jupiter.api.Assertions.assertEquals;
@@ -27,16 +28,16 @@ public class BpmTaskCandidateDeptLeaderStrategyTest extends BaseMockitoUnitTest 
     @Test
     public void testCalculateUsers() {
         // 准备参数
-        String param = "1,2";
+        String param = "10,20";
         // mock 方法
-        DeptRespDTO dept1 = randomPojo(DeptRespDTO.class, o -> o.setLeaderUserId(11L));
-        DeptRespDTO dept2 = randomPojo(DeptRespDTO.class, o -> o.setLeaderUserId(22L));
-        when(deptApi.getDeptList(eq(asSet(1L, 2L)))).thenReturn(asList(dept1, dept2));
+        when(deptApi.getDeptList(eq(SetUtils.asSet(10L, 20L)))).thenReturn(asList(
+                randomPojo(DeptRespDTO.class, o -> o.setId(10L).setParentId(10L).setLeaderUserId(11L)),
+                randomPojo(DeptRespDTO.class, o -> o.setId(20L).setParentId(20L).setLeaderUserId(21L))));
         // 调用
-        Set<Long> results = strategy.calculateUsers(null, param);
-        // 断言
-        assertEquals(asSet(11L, 22L), results);
+        Set<Long> userIds = strategy.calculateUsers(param);
+        // 断言结果
+        assertEquals(Sets.newLinkedHashSet(11L, 21L), userIds);
     }
 }
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.dept;
+import cn.iocoder.yudao.framework.common.util.collection.SetUtils;
 import cn.iocoder.yudao.framework.test.core.ut.BaseMockitoUnitTest;
+import cn.iocoder.yudao.module.system.api.dept.DeptApi;
 import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
 import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
+import org.assertj.core.util.Sets;
 import org.junit.jupiter.api.Test;
 import org.mockito.InjectMocks;
 import org.mockito.Mock;
-import java.util.List;
 import java.util.Set;
-import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertList;
-import static cn.iocoder.yudao.framework.common.util.collection.SetUtils.asSet;
+import static cn.iocoder.yudao.framework.test.core.util.RandomUtils.randomPojo;
+import static java.util.Arrays.asList;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.when;
@@ -22,21 +24,23 @@ public class BpmTaskCandidateDeptMemberStrategyTest extends BaseMockitoUnitTest 
     private BpmTaskCandidateDeptMemberStrategy strategy;
     @Mock
+    private DeptApi deptApi;
+    @Mock
     private AdminUserApi adminUserApi;
     @Test
     public void testCalculateUsers() {
         // 准备参数
-        String param = "11,22";
+        String param = "10,20";
         // mock 方法
-        List<AdminUserRespDTO> users = convertList(asSet(11L, 22L),
-                id -> new AdminUserRespDTO().setId(id));
-        when(adminUserApi.getUserListByDeptIds(eq(asSet(11L, 22L)))).thenReturn(users);
+        when(adminUserApi.getUserListByDeptIds(eq(SetUtils.asSet(10L, 20L)))).thenReturn(asList(
+                randomPojo(AdminUserRespDTO.class, o -> o.setId(11L)),
+                randomPojo(AdminUserRespDTO.class, o -> o.setId(21L))));
         // 调用
-        Set<Long> results = strategy.calculateUsers(null, param);
-        // 断言
-        assertEquals(asSet(11L, 22L), results);
+        Set<Long> userIds = strategy.calculateUsers(param);
+        // 断言结果
+        assertEquals(Sets.newLinkedHashSet(11L, 21L), userIds);
     }
 }
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.dept;
+
+import cn.iocoder.yudao.framework.test.core.ut.BaseMockitoUnitTest;
+import cn.iocoder.yudao.module.bpm.service.task.BpmProcessInstanceService;
+import cn.iocoder.yudao.module.system.api.dept.DeptApi;
+import cn.iocoder.yudao.module.system.api.dept.dto.DeptRespDTO;
+import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
+import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
+import org.assertj.core.util.Sets;
+import org.flowable.engine.delegate.DelegateExecution;
+import org.flowable.engine.runtime.ProcessInstance;
+import org.junit.jupiter.api.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.stubbing.Answer;
+
+import java.util.Set;
+
+import static cn.iocoder.yudao.framework.test.core.util.RandomUtils.randomPojo;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+public class BpmTaskCandidateStartUserDeptLeaderMultiStrategyTest extends BaseMockitoUnitTest {
+
+    @InjectMocks
+    private BpmTaskCandidateStartUserDeptLeaderMultiStrategy strategy;
+
+    @Mock
+    private BpmProcessInstanceService processInstanceService;
+
+    @Mock
+    private AdminUserApi adminUserApi;
+    @Mock
+    private DeptApi deptApi;
+
+    @Test
+    public void testCalculateUsersByTask() {
+        // 准备参数
+        String param = "2";
+        // mock 方法（获得流程发起人）
+        Long startUserId = 1L;
+        ProcessInstance processInstance = mock(ProcessInstance.class);
+        DelegateExecution execution = mock(DelegateExecution.class);
+        when(processInstanceService.getProcessInstance(eq(execution.getProcessInstanceId()))).thenReturn(processInstance);
+        when(processInstance.getStartUserId()).thenReturn(startUserId.toString());
+        // mock 方法（获取发起人的 multi 部门负责人）
+        mockGetStartUserDept(startUserId);
+
+        // 调用
+        Set<Long> userIds = strategy.calculateUsersByTask(execution, param);
+        // 断言
+        assertEquals(Sets.newLinkedHashSet(11L, 1001L), userIds);
+    }
+
+    @Test
+    public void testCalculateUsersByActivity() {
+        // 准备参数
+        String param = "2";
+        // mock 方法
+        Long startUserId = 1L;
+        mockGetStartUserDept(startUserId);
+
+        // 调用
+        Set<Long> userIds = strategy.calculateUsersByActivity(null, null, param,
+                startUserId, null, null);
+        // 断言
+        assertEquals(Sets.newLinkedHashSet(11L, 1001L), userIds);
+    }
+
+    private void mockGetStartUserDept(Long startUserId) {
+        when(adminUserApi.getUser(eq(startUserId))).thenReturn(
+                randomPojo(AdminUserRespDTO.class, o -> o.setId(startUserId).setDeptId(10L)));
+        when(deptApi.getDept(any())).thenAnswer((Answer<DeptRespDTO>) invocationOnMock -> {
+            Long deptId = invocationOnMock.getArgument(0);
+            return randomPojo(DeptRespDTO.class, o -> o.setId(deptId).setParentId(deptId * 100).setLeaderUserId(deptId + 1));
+        });
+    }
+
+}
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.dept;
+
+import cn.iocoder.yudao.framework.test.core.ut.BaseMockitoUnitTest;
+import cn.iocoder.yudao.module.bpm.service.task.BpmProcessInstanceService;
+import cn.iocoder.yudao.module.system.api.dept.DeptApi;
+import cn.iocoder.yudao.module.system.api.dept.dto.DeptRespDTO;
+import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
+import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
+import org.assertj.core.util.Sets;
+import org.flowable.engine.delegate.DelegateExecution;
+import org.flowable.engine.runtime.ProcessInstance;
+import org.junit.jupiter.api.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.stubbing.Answer;
+
+import java.util.Set;
+
+import static cn.iocoder.yudao.framework.test.core.util.RandomUtils.randomPojo;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+public class BpmTaskCandidateStartUserDeptLeaderStrategyTest extends BaseMockitoUnitTest {
+
+    @InjectMocks
+    private BpmTaskCandidateStartUserDeptLeaderStrategy strategy;
+
+    @Mock
+    private BpmProcessInstanceService processInstanceService;
+
+    @Mock
+    private AdminUserApi adminUserApi;
+    @Mock
+    private DeptApi deptApi;
+
+    @Test
+    public void testCalculateUsersByTask() {
+        // 准备参数
+        String param = "2";
+        // mock 方法（获得流程发起人）
+        Long startUserId = 1L;
+        ProcessInstance processInstance = mock(ProcessInstance.class);
+        DelegateExecution execution = mock(DelegateExecution.class);
+        when(processInstanceService.getProcessInstance(eq(execution.getProcessInstanceId()))).thenReturn(processInstance);
+        when(processInstance.getStartUserId()).thenReturn(startUserId.toString());
+        // mock 方法（获取发起人的部门负责人）
+        mockGetStartUserDeptLeader(startUserId);
+
+        // 调用
+        Set<Long> userIds = strategy.calculateUsersByTask(execution, param);
+        // 断言
+        assertEquals(Sets.newLinkedHashSet(1001L), userIds);
+    }
+
+    @Test
+    public void testGetStartUserDeptLeader() {
+        // 准备参数
+        String param = "2";
+        // mock 方法
+        Long startUserId = 1L;
+        mockGetStartUserDeptLeader(startUserId);
+
+        // 调用
+        Set<Long> userIds = strategy.calculateUsersByActivity(null, null, param,
+                startUserId, null, null);
+        // 断言
+        assertEquals(Sets.newLinkedHashSet(1001L), userIds);
+    }
+
+    private void mockGetStartUserDeptLeader(Long startUserId) {
+        when(adminUserApi.getUser(eq(startUserId))).thenReturn(
+                randomPojo(AdminUserRespDTO.class, o -> o.setId(startUserId).setDeptId(10L)));
+        when(deptApi.getDept(any())).thenAnswer((Answer<DeptRespDTO>) invocationOnMock -> {
+            Long deptId = invocationOnMock.getArgument(0);
+            return randomPojo(DeptRespDTO.class, o -> o.setId(deptId).setParentId(deptId * 100).setLeaderUserId(deptId + 1));
+        });
+    }
+
+}
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.dept;
+
+import cn.hutool.core.map.MapUtil;
+import cn.iocoder.yudao.framework.test.core.ut.BaseMockitoUnitTest;
+import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnVariableConstants;
+import cn.iocoder.yudao.module.bpm.service.task.BpmProcessInstanceService;
+import org.assertj.core.util.Sets;
+import org.flowable.engine.delegate.DelegateExecution;
+import org.flowable.engine.runtime.ProcessInstance;
+import org.junit.jupiter.api.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+public class BpmTaskCandidateStartUserSelectStrategyTest extends BaseMockitoUnitTest {
+
+    @InjectMocks
+    private BpmTaskCandidateStartUserSelectStrategy strategy;
+
+    @Mock
+    private BpmProcessInstanceService processInstanceService;
+
+    @Test
+    public void testCalculateUsersByTask() {
+        // 准备参数
+        String param = "2";
+        // mock 方法（获得流程发起人）
+        ProcessInstance processInstance = mock(ProcessInstance.class);
+        DelegateExecution execution = mock(DelegateExecution.class);
+        when(processInstanceService.getProcessInstance(eq(execution.getProcessInstanceId()))).thenReturn(processInstance);
+        when(execution.getCurrentActivityId()).thenReturn("activity_001");
+        // mock 方法（FlowableUtils）
+        Map<String, Object> processVariables = new HashMap<>();
+        processVariables.put(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_START_USER_SELECT_ASSIGNEES,
+                MapUtil.of("activity_001", List.of(1L, 2L)));
+        when(processInstance.getProcessVariables()).thenReturn(processVariables);
+
+        // 调用
+        Set<Long> userIds = strategy.calculateUsersByTask(execution, param);
+        // 断言
+        assertEquals(Sets.newLinkedHashSet(1L, 2L), userIds);
+    }
+
+    @Test
+    public void testCalculateUsersByActivity() {
+        // 准备参数
+        String activityId = "activity_001";
+        Map<String, Object> processVariables = new HashMap<>();
+        processVariables.put(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_START_USER_SELECT_ASSIGNEES,
+                MapUtil.of("activity_001", List.of(1L, 2L)));
+
+        // 调用
+        Set<Long> userIds = strategy.calculateUsersByActivity(null, activityId, null,
+                null, null, processVariables);
+        // 断言
+        assertEquals(Sets.newLinkedHashSet(1L, 2L), userIds);
+    }
+
+}
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.other;
+
+import cn.hutool.core.collection.ListUtil;
+import cn.iocoder.yudao.framework.common.util.collection.SetUtils;
+import cn.iocoder.yudao.framework.test.core.ut.BaseMockitoUnitTest;
+import cn.iocoder.yudao.module.bpm.dal.dataobject.definition.BpmProcessDefinitionInfoDO;
+import cn.iocoder.yudao.module.bpm.enums.definition.BpmUserTaskAssignEmptyHandlerTypeEnum;
+import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.BpmnModelUtils;
+import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.FlowableUtils;
+import cn.iocoder.yudao.module.bpm.service.definition.BpmProcessDefinitionService;
+import org.flowable.bpmn.model.BpmnModel;
+import org.flowable.bpmn.model.FlowElement;
+import org.flowable.engine.delegate.DelegateExecution;
+import org.junit.jupiter.api.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.MockedStatic;
+
+import java.util.Set;
+
+import static cn.iocoder.yudao.framework.test.core.util.RandomUtils.randomPojo;
+import static cn.iocoder.yudao.framework.test.core.util.RandomUtils.randomString;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.Mockito.*;
+
+public class BpmTaskCandidateAssignEmptyStrategyTest extends BaseMockitoUnitTest {
+
+    @InjectMocks
+    private BpmTaskCandidateAssignEmptyStrategy strategy;
+
+    @Mock
+    private BpmProcessDefinitionService processDefinitionService;
+
+    @Test
+    public void testCalculateUsersByTask() {
+        try (MockedStatic<FlowableUtils> flowableUtilMockedStatic = mockStatic(FlowableUtils.class);
+             MockedStatic<BpmnModelUtils> bpmnModelUtilsMockedStatic = mockStatic(BpmnModelUtils.class)) {
+            // 准备参数
+            DelegateExecution execution = mock(DelegateExecution.class);
+            String param = randomString();
+            // mock 方法（execution）
+            String processDefinitionId = randomString();
+            when(execution.getProcessDefinitionId()).thenReturn(processDefinitionId);
+            FlowElement flowElement = mock(FlowElement.class);
+            when(execution.getCurrentFlowElement()).thenReturn(flowElement);
+            // mock 方法（parseAssignEmptyHandlerType）
+            bpmnModelUtilsMockedStatic.when(() -> BpmnModelUtils.parseAssignEmptyHandlerType(same(flowElement)))
+                    .thenReturn(BpmUserTaskAssignEmptyHandlerTypeEnum.ASSIGN_USER.getType());
+            bpmnModelUtilsMockedStatic.when(() -> BpmnModelUtils.parseAssignEmptyHandlerUserIds(same(flowElement)))
+                    .thenReturn(ListUtil.of(1L, 2L));
+
+            // 调用
+            Set<Long> userIds = strategy.calculateUsersByTask(execution, param);
+            // 断言
+            assertEquals(SetUtils.asSet(1L, 2L), userIds);
+        }
+
+    }
+
+    @Test
+    public void testCalculateUsersByActivity() {
+        try (MockedStatic<BpmnModelUtils> bpmnModelUtilsMockedStatic = mockStatic(BpmnModelUtils.class)) {
+            // 准备参数
+            String processDefinitionId = randomString();
+            String activityId = randomString();
+            String param = randomString();
+            // mock 方法（getFlowElementById）
+            FlowElement flowElement = mock(FlowElement.class);
+            BpmnModel bpmnModel = mock(BpmnModel.class);
+            bpmnModelUtilsMockedStatic.when(() -> BpmnModelUtils.getFlowElementById(same(bpmnModel), eq(activityId)))
+                    .thenReturn(flowElement);
+            // mock 方法（parseAssignEmptyHandlerType）
+            bpmnModelUtilsMockedStatic.when(() -> BpmnModelUtils.parseAssignEmptyHandlerType(same(flowElement)))
+                 .thenReturn(BpmUserTaskAssignEmptyHandlerTypeEnum.ASSIGN_ADMIN.getType());
+            // mock 方法（getProcessDefinitionInfo）
+            BpmProcessDefinitionInfoDO processDefinition = randomPojo(BpmProcessDefinitionInfoDO.class,
+                    o -> o.setManagerUserIds(ListUtil.of(1L, 2L)));
+            when(processDefinitionService.getProcessDefinitionInfo(eq(processDefinitionId))).thenReturn(processDefinition);
+
+            // 调用
+            Set<Long> userIds = strategy.calculateUsersByActivity(bpmnModel, activityId, param,
+                    null, processDefinitionId, null);
+            // 断言
+            assertEquals(SetUtils.asSet(1L, 2L), userIds);
+        }
+    }
+
+}
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.other;
-import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.FlowableUtils;
 import cn.iocoder.yudao.framework.test.core.ut.BaseMockitoUnitTest;
+import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.FlowableUtils;
 import org.flowable.engine.delegate.DelegateExecution;
 import org.junit.jupiter.api.Test;
 import org.mockito.InjectMocks;
 import org.mockito.MockedStatic;
+import java.util.HashMap;
+import java.util.Map;
 import java.util.Set;
 import static cn.iocoder.yudao.framework.common.util.collection.SetUtils.asSet;
@@ -20,7 +22,7 @@ public class BpmTaskCandidateExpressionStrategyTest extends BaseMockitoUnitTest 
     private BpmTaskCandidateExpressionStrategy strategy;
     @Test
-    public void testCalculateUsers() {
+    public void testCalculateUsersByTask() {
         try (MockedStatic<FlowableUtils> flowableUtilMockedStatic = mockStatic(FlowableUtils.class)) {
             // 准备参数
             String param = "1,2";
@@ -30,7 +32,25 @@ public class BpmTaskCandidateExpressionStrategyTest extends BaseMockitoUnitTest 
                     .thenReturn(asSet(1L, 2L));
             // 调用
-            Set<Long> results = strategy.calculateUsers(execution, param);
+            Set<Long> results = strategy.calculateUsersByTask(execution, param);
+            // 断言
+            assertEquals(asSet(1L, 2L), results);
+        }
+    }
+
+    @Test
+    public void testCalculateUsersByActivity() {
+        try (MockedStatic<FlowableUtils> flowableUtilMockedStatic = mockStatic(FlowableUtils.class)) {
+            // 准备参数
+            String param = "1,2";
+            Map<String, Object> processVariables = new HashMap<>();
+            // mock 方法
+            flowableUtilMockedStatic.when(() -> FlowableUtils.getExpressionValue(same(processVariables), eq(param)))
+                    .thenReturn(asSet(1L, 2L));
+
+            // 调用
+            Set<Long> results = strategy.calculateUsersByActivity(null, null, param,
+                    null, null, processVariables);
             // 断言
             assertEquals(asSet(1L, 2L), results);
         }
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.user;
 import cn.iocoder.yudao.framework.test.core.ut.BaseMockitoUnitTest;
 import cn.iocoder.yudao.module.bpm.dal.dataobject.definition.BpmUserGroupDO;
@@ -34,9 +34,9 @@ public class BpmTaskCandidateGroupStrategyTest extends BaseMockitoUnitTest {
         when(userGroupService.getUserGroupList(eq(asSet(1L, 2L)))).thenReturn(Arrays.asList(userGroup1, userGroup2));
         // 调用
-        Set<Long> results = strategy.calculateUsers(null, param);
+        Set<Long> userIds = strategy.calculateUsersByTask(null, param);
         // 断言
-        assertEquals(asSet(11L, 12L, 21L, 22L), results);
+        assertEquals(asSet(11L, 12L, 21L, 22L), userIds);
     }
 }
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.user;
 import cn.iocoder.yudao.framework.test.core.ut.BaseMockitoUnitTest;
 import cn.iocoder.yudao.module.system.api.dept.PostApi;
@@ -37,9 +37,9 @@ public class BpmTaskCandidatePostStrategyTest extends BaseMockitoUnitTest {
         when(adminUserApi.getUserListByPostIds(eq(asSet(1L, 2L)))).thenReturn(users);
         // 调用
-        Set<Long> results = strategy.calculateUsers(null, param);
+        Set<Long> userIds = strategy.calculateUsersByTask(null, param);
         // 断言
-        assertEquals(asSet(11L, 22L), results);
+        assertEquals(asSet(11L, 22L), userIds);
     }
 }
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.user;
 import cn.iocoder.yudao.framework.test.core.ut.BaseMockitoUnitTest;
 import cn.iocoder.yudao.module.system.api.permission.PermissionApi;
@@ -33,9 +33,9 @@ public class BpmTaskCandidateRoleStrategyTest extends BaseMockitoUnitTest {
             .thenReturn(asSet(11L, 22L));
         // 调用
-        Set<Long> results = strategy.calculateUsers(null, param);
+        Set<Long> userIds = strategy.calculateUsersByTask(null, param);
         // 断言
-        assertEquals(asSet(11L, 22L), results);
+        assertEquals(asSet(11L, 22L), userIds);
     }
 }
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.user;
+
+import cn.iocoder.yudao.framework.test.core.ut.BaseMockitoUnitTest;
+import cn.iocoder.yudao.module.bpm.service.task.BpmProcessInstanceService;
+import org.assertj.core.util.Sets;
+import org.flowable.engine.delegate.DelegateExecution;
+import org.flowable.engine.runtime.ProcessInstance;
+import org.junit.jupiter.api.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+
+import java.util.Set;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+public class BpmTaskCandidateStartUserStrategyTest extends BaseMockitoUnitTest {
+
+    @InjectMocks
+    private BpmTaskCandidateStartUserStrategy strategy;
+
+    @Mock
+    private BpmProcessInstanceService processInstanceService;
+
+    @Test
+    public void testCalculateUsersByTask() {
+        // 准备参数
+        String param = "2";
+        // mock 方法（获得流程发起人）
+        Long startUserId = 1L;
+        ProcessInstance processInstance = mock(ProcessInstance.class);
+        DelegateExecution execution = mock(DelegateExecution.class);
+        when(processInstanceService.getProcessInstance(eq(execution.getProcessInstanceId()))).thenReturn(processInstance);
+        when(processInstance.getStartUserId()).thenReturn(startUserId.toString());
+
+        // 调用
+        Set<Long> userIds = strategy.calculateUsersByTask(execution, param);
+        // 断言
+        assertEquals(Sets.newLinkedHashSet(startUserId), userIds);
+    }
+
+    @Test
+    public void testCalculateUsersByActivity() {
+        // 准备参数
+        Long startUserId = 1L;
+
+        // 调用
+        Set<Long> userIds = strategy.calculateUsersByActivity(null, null, null,
+                startUserId, null, null);
+        // 断言
+        assertEquals(Sets.newLinkedHashSet(startUserId), userIds);
+    }
+
+}
-package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy;
+package cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.user;
 import cn.iocoder.yudao.framework.test.core.ut.BaseMockitoUnitTest;
 import org.junit.jupiter.api.Test;
@@ -15,14 +15,15 @@ public class BpmTaskCandidateUserStrategyTest extends BaseMockitoUnitTest {
     private BpmTaskCandidateUserStrategy strategy;
     @Test
-    public void testCalculateUsers() {
+    public void test() {
         // 准备参数
         String param = "1,2";
         // 调用
-        Set<Long> results = strategy.calculateUsers(null, param);
+        Set<Long> userIds = strategy.calculateUsersByTask(null, param);
         // 断言
-        assertEquals(asSet(1L, 2L), results);
+        assertEquals(asSet(1L, 2L), userIds);
     }
+
 }