【功能优化】工作流：BPMN 流程图高亮的计算，切换到后端为主

YunaiV
1 parent f299bf8a
Showing 15 changed files with 134 additions and 94 deletions
sql/mysql/bpm_update.sql
yudao-module-bpm/yudao-module-bpm-api/src/main/java/cn/iocoder/yudao/module/bpm/enums/task/BpmProcessInstanceStatusEnum.java
yudao-module-bpm/yudao-module-bpm-api/src/main/java/cn/iocoder/yudao/module/bpm/enums/task/BpmTaskStatusEnum.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/task/BpmActivityController.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/task/BpmProcessInstanceController.http
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/task/BpmProcessInstanceController.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/task/BpmTaskController.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/task/vo/instance/BpmProcessInstanceBpmnModelViewRespVO.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/convert/task/BpmActivityConvert.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/service/task/BpmActivityServiceImpl.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmProcessInstanceService.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/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmTaskService.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmTaskServiceImpl.java
--- ----------------------------
--- 流程抄送表新加流程活动编号
--- ----------------------------
-ALTER TABLE `pro-test`.`bpm_process_instance_copy`
-    ADD COLUMN `activity_id` varchar(64) NULL COMMENT '流程活动编号' AFTER `category`,
-    MODIFY COLUMN `task_id` varchar(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT '' COMMENT '任务编号' AFTER `category`;
-
-ALTER TABLE `pro-test`.`bpm_process_definition_info`
-    ADD COLUMN `model_type` tinyint NOT NULL DEFAULT 10 COMMENT '流程模型的类型' AFTER `model_id`,
-    ADD COLUMN `simple_model` json NULL COMMENT 'SIMPLE 设计器模型数据' AFTER `form_custom_view_path`,
-    ADD COLUMN `visible` bit(1) NOT NULL DEFAULT 1 COMMENT '是否可见' AFTER `simple_model`;
 \ No newline at end of file
@@ -38,6 +38,10 @@ public enum BpmProcessInstanceStatusEnum implements IntArrayValuable {
         return ARRAYS;
     }
+    public static boolean isRejectStatus(Integer status) {
+        return REJECT.getStatus().equals(status);
+    }
+
     public static boolean isProcessEndStatus(Integer status) {
         return ObjectUtils.equalsAny(status,
                 APPROVE.getStatus(), REJECT.getStatus(), CANCEL.getStatus());
@@ -45,6 +45,10 @@ public enum BpmTaskStatusEnum {
      */
     private final String name;
+    public static boolean isRejectStatus(Integer status) {
+        return REJECT.getStatus().equals(status);
+    }
+
     /**
      * 判断该状态是否已经处于 End 最终状态
      * <p>
-package cn.iocoder.yudao.module.bpm.controller.admin.task;
-
-import cn.iocoder.yudao.framework.common.pojo.CommonResult;
-import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.activity.BpmActivityRespVO;
-import cn.iocoder.yudao.module.bpm.convert.task.BpmActivityConvert;
-import cn.iocoder.yudao.module.bpm.service.task.BpmActivityService;
-import io.swagger.v3.oas.annotations.tags.Tag;
-import io.swagger.v3.oas.annotations.Parameter;
-import io.swagger.v3.oas.annotations.Operation;
-import org.springframework.security.access.prepost.PreAuthorize;
-import org.springframework.validation.annotation.Validated;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestParam;
-import org.springframework.web.bind.annotation.RestController;
-
-import jakarta.annotation.Resource;
-import java.util.List;
-
-import static cn.iocoder.yudao.framework.common.pojo.CommonResult.success;
-
-@Tag(name = "管理后台 - 流程活动实例")
-@RestController
-@RequestMapping("/bpm/activity")
-@Validated
-public class BpmActivityController {
-
-    @Resource
-    private BpmActivityService activityService;
-
-    @GetMapping("/list")
-    @Operation(summary = "生成指定流程实例的高亮流程图",
-            description = "只高亮进行中的任务。不过要注意，该接口暂时没用，通过前端的 ProcessViewer.vue 界面的 highlightDiagram 方法生成")
-    @Parameter(name = "processInstanceId", description = "流程实例的编号", required = true)
-    @PreAuthorize("@ss.hasPermission('bpm:task:query')")
-    public CommonResult<List<BpmActivityRespVO>> getActivityList(
-            @RequestParam("processInstanceId") String processInstanceId) {
-        return success(BpmActivityConvert.INSTANCE.convertList(activityService.getActivityListByProcessInstanceId(processInstanceId)));
-    }
-}
+### 请求 /bpm/process-instance/get-bpmn 接口 => 成功
+GET {{baseUrl}}/bpm/process-instance/get-bpmn-model-view?id=1d5fb5a6-85f8-11ef-b717-7e93075f94e3
+Content-Type: application/json
+tenant-id: 1
+Authorization: Bearer {{token}}
 \ No newline at end of file
@@ -173,4 +173,11 @@ public class BpmProcessInstanceController {
         return success(processInstanceService.getApprovalDetail(getLoginUserId(), reqVO));
     }
+    @GetMapping("/get-bpmn-model-view")
+    @Operation(summary = "获取流程实例的 BPMN 模型视图", description = "在【流程详细】界面中，进行调用")
+    @Parameter(name = "id", description = "流程实例的编号", required = true)
+    public CommonResult<BpmProcessInstanceBpmnModelViewRespVO> getProcessInstanceBpmnModelView(@RequestParam(value = "id") String id) {
+        return success(processInstanceService.getProcessInstanceBpmnModelView(id));
+    }
+
 }
@@ -121,7 +121,7 @@ public class BpmTaskController {
     @PreAuthorize("@ss.hasPermission('bpm:task:query')")
     public CommonResult<List<BpmTaskRespVO>> getTaskListByProcessInstanceId(
             @RequestParam("processInstanceId") String processInstanceId) {
-        List<HistoricTaskInstance> taskList = taskService.getTaskListByProcessInstanceId(processInstanceId);
+        List<HistoricTaskInstance> taskList = taskService.getTaskListByProcessInstanceId(processInstanceId, true);
         if (CollUtil.isEmpty(taskList)) {
             return success(Collections.emptyList());
         }
+package cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance;
+
+import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.task.BpmTaskRespVO;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+
+import java.util.List;
+import java.util.Set;
+
+@Schema(description = "管理后台 - 流程示例的 BPMN 视图 Response VO")
+@Data
+public class BpmProcessInstanceBpmnModelViewRespVO {
+
+    // ========== 基本信息 ==========
+
+    @Schema(description = "流程实例信息", requiredMode = Schema.RequiredMode.REQUIRED)
+    private BpmProcessInstanceRespVO processInstance;
+
+    @Schema(description = "任务列表", requiredMode = Schema.RequiredMode.REQUIRED)
+    private List<BpmTaskRespVO> tasks;
+
+    @Schema(description = "BPMN XML", requiredMode = Schema.RequiredMode.REQUIRED)
+    private String bpmnXml;
+
+    // ========== 进度信息 ==========
+
+    @Schema(description = "进行中的活动节点编号集合", requiredMode = Schema.RequiredMode.REQUIRED)
+    private Set<String> unfinishedTaskActivityIds; // 只包括 UserTask
+
+    @Schema(description = "已经完成的活动节点编号集合", requiredMode = Schema.RequiredMode.REQUIRED)
+    private Set<String> finishedTaskActivityIds; // 包括 UserTask、Gateway 等，不包括 SequenceFlow
+
+    @Schema(description = "已经完成的连线节点编号集合", requiredMode = Schema.RequiredMode.REQUIRED)
+    private Set<String> finishedSequenceFlowActivityIds; // 只包括 SequenceFlow
+
+    @Schema(description = "已经拒绝的活动节点编号集合", requiredMode = Schema.RequiredMode.REQUIRED)
+    private Set<String> rejectedTaskActivityIds; // 只包括 UserTask
+
+}
-package cn.iocoder.yudao.module.bpm.convert.task;
-
-import cn.iocoder.yudao.framework.common.util.date.DateUtils;
-import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.activity.BpmActivityRespVO;
-import org.flowable.engine.history.HistoricActivityInstance;
-import org.mapstruct.Mapper;
-import org.mapstruct.Mapping;
-import org.mapstruct.Mappings;
-import org.mapstruct.factory.Mappers;
-
-import java.util.List;
-
-/**
- * BPM 活动 Convert
- *
- * @author 芋道源码
- */
-@Mapper(uses = DateUtils.class)
-public interface BpmActivityConvert {
-
-    BpmActivityConvert INSTANCE = Mappers.getMapper(BpmActivityConvert.class);
-
-    List<BpmActivityRespVO> convertList(List<HistoricActivityInstance> list);
-
-    @Mappings({
-            @Mapping(source = "activityId", target = "key"),
-            @Mapping(source = "activityType", target = "type")
-    })
-    BpmActivityRespVO convert(HistoricActivityInstance bean);
-}
 package cn.iocoder.yudao.module.bpm.convert.task;
+import cn.hutool.core.util.StrUtil;
 import cn.iocoder.yudao.framework.common.pojo.PageResult;
 import cn.iocoder.yudao.framework.common.util.collection.MapUtils;
 import cn.iocoder.yudao.framework.common.util.number.NumberUtils;
 import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
 import cn.iocoder.yudao.module.bpm.controller.admin.definition.vo.process.BpmProcessDefinitionRespVO;
+import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.BpmProcessInstanceBpmnModelViewRespVO;
 import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.BpmProcessInstanceRespVO;
+import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.task.BpmTaskRespVO;
 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.util.BpmnModelUtils;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.FlowableUtils;
 import cn.iocoder.yudao.module.bpm.service.message.dto.BpmMessageSendWhenProcessInstanceApproveReqDTO;
 import cn.iocoder.yudao.module.bpm.service.message.dto.BpmMessageSendWhenProcessInstanceRejectReqDTO;
 import cn.iocoder.yudao.module.system.api.dept.dto.DeptRespDTO;
 import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
+import org.flowable.bpmn.model.BpmnModel;
 import org.flowable.engine.history.HistoricProcessInstance;
 import org.flowable.engine.repository.ProcessDefinition;
 import org.flowable.engine.runtime.ProcessInstance;
 import org.flowable.task.api.Task;
+import org.flowable.task.api.history.HistoricTaskInstance;
 import org.mapstruct.Mapper;
 import org.mapstruct.Mapping;
 import org.mapstruct.MappingTarget;
@@ -25,6 +31,9 @@ import org.mapstruct.factory.Mappers;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
+
+import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertList;
 /**
  * 流程实例 Convert
@@ -109,4 +118,49 @@ public interface BpmProcessInstanceConvert {
             .setStartUserId(NumberUtils.parseLong(instance.getStartUserId()));
     }
+    default BpmProcessInstanceBpmnModelViewRespVO buildProcessInstanceBpmnModelView(HistoricProcessInstance processInstance,
+                                                                                    List<HistoricTaskInstance> taskInstances,
+                                                                                    BpmnModel bpmnModel,
+                                                                                    Set<String> unfinishedTaskActivityIds,
+                                                                                    Set<String> finishedTaskActivityIds,
+                                                                                    Set<String> finishedSequenceFlowActivityIds,
+                                                                                    Set<String> rejectTaskActivityIds,
+                                                                                    Map<Long, AdminUserRespDTO> userMap,
+                                                                                    Map<Long, DeptRespDTO> deptMap) {
+        BpmProcessInstanceBpmnModelViewRespVO respVO = new BpmProcessInstanceBpmnModelViewRespVO();
+        // 基本信息
+        respVO.setProcessInstance(BeanUtils.toBean(processInstance, BpmProcessInstanceRespVO.class, o -> o
+                        .setStatus(FlowableUtils.getProcessInstanceStatus(processInstance)))
+                        .setStartUser(buildUser(processInstance.getStartUserId(), userMap, deptMap)));
+        respVO.setTasks(convertList(taskInstances, task -> BeanUtils.toBean(task, BpmTaskRespVO.class)
+                .setStatus(FlowableUtils.getTaskStatus(task)).setReason(FlowableUtils.getTaskReason(task))
+                .setAssigneeUser(buildUser(task.getAssignee(), userMap, deptMap))
+                .setOwnerUser(buildUser(task.getOwner(), userMap, deptMap))));
+        respVO.setBpmnXml(BpmnModelUtils.getBpmnXml(bpmnModel));
+        // 进度信息
+        respVO.setUnfinishedTaskActivityIds(unfinishedTaskActivityIds)
+                .setFinishedTaskActivityIds(finishedTaskActivityIds)
+                .setFinishedSequenceFlowActivityIds(finishedSequenceFlowActivityIds)
+                .setRejectedTaskActivityIds(rejectTaskActivityIds);
+        return respVO;
+    }
+
+    default BpmProcessInstanceRespVO.User buildUser(String userId,
+                                                    Map<Long, AdminUserRespDTO> userMap,
+                                                    Map<Long, DeptRespDTO> deptMap) {
+        if (StrUtil.isBlank(userId)) {
+            return null;
+        }
+        AdminUserRespDTO user = userMap.get(NumberUtils.parseLong(userId));
+        if (user == null) {
+            return null;
+        }
+        BpmProcessInstanceRespVO.User userVO = BeanUtils.toBean(user, BpmProcessInstanceRespVO.User.class);
+        DeptRespDTO dept = user.getDeptId() != null ? deptMap.get(user.getDeptId()) : null;
+        if (dept != null) {
+            userVO.setDeptName(dept.getName());
+        }
+        return userVO;
+    }
+
 }
@@ -9,7 +9,7 @@ import org.springframework.validation.annotation.Validated;
 import java.util.List;
-
+// TODO 芋艿：准备废弃
 /**
  * BPM 活动实例 Service 实现类
  *
@@ -104,6 +104,14 @@ public interface BpmProcessInstanceService {
      */
     BpmApprovalDetailRespVO getApprovalDetail(Long loginUserId, @Valid BpmApprovalDetailReqVO reqVO);
+    /**
+     * 获取流程实例的 BPMN 模型视图
+     *
+     * @param id 流程实例的编号
+     * @return BPMN 模型视图
+     */
+    BpmProcessInstanceBpmnModelViewRespVO getProcessInstanceBpmnModelView(String id);
+
     // ========== Update 写入相关方法 ==========
     /**
@@ -157,5 +165,4 @@ public interface BpmProcessInstanceService {
      */
     void processProcessInstanceCompleted(ProcessInstance instance);
-
 }
-package cn.iocoder.yudao.module.bpm.service.task;

import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.util.ArrayUtil;
import cn.hutool.core.util.BooleanUtil;
import cn.hutool.core.util.NumberUtil;
import cn.hutool.core.util.StrUtil;
import cn.iocoder.yudao.framework.common.pojo.PageResult;
import cn.iocoder.yudao.framework.common.util.collection.CollectionUtils;
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.BeanUtils;
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.ApprovalTaskInfo;
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.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.bpm.service.task.bo.AlreadyRunApproveNodeRespBO;
import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.Multimap;
import jakarta.annotation.Resource;
import jakarta.validation.Valid;
import lombok.extern.slf4j.Slf4j;
import org.flowable.bpmn.model.BpmnModel;
import org.flowable.bpmn.model.UserTask;
import org.flowable.common.engine.api.FlowableException;
import org.flowable.common.engine.api.variable.VariableContainer;
import org.flowable.engine.HistoryService;
import org.flowable.engine.ManagementService;
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 java.util.stream.Stream;

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.ApprovalNodeInfo;
import static cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.BpmApprovalDetailRespVO.User;
import static cn.iocoder.yudao.module.bpm.enums.ErrorCodeConstants.*;
import static cn.iocoder.yudao.module.bpm.enums.definition.BpmSimpleModelNodeType.*;
import static cn.iocoder.yudao.module.bpm.enums.definition.BpmUserTaskApproveTypeEnum.USER;
import static cn.iocoder.yudao.module.bpm.enums.task.BpmTaskStatusEnum.*;
import static cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmTaskCandidateStrategyEnum.START_USER;
import static cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnModelConstants.START_USER_NODE_ID;

/**
 * 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 ManagementService managementService;
    @Resource
    private BpmActivityService activityService;
    @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 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);
    }

    @Override
    public Map<String, String> getFormFieldsPermission(BpmFormFieldsPermissionReqVO reqVO) {
        // 1.1  获取流程定义 Id
        String processDefinitionId = reqVO.getProcessDefinitionId();
        if (StrUtil.isEmpty(processDefinitionId) && StrUtil.isNotEmpty(reqVO.getProcessInstanceId())) {
            HistoricProcessInstance processInstance = getHistoricProcessInstance(reqVO.getProcessInstanceId());
            if (processInstance == null) {
                throw exception(ErrorCodeConstants.PROCESS_INSTANCE_NOT_EXISTS);
            }
            processDefinitionId = processInstance.getProcessDefinitionId();
        }

        // 1.2 获取流程活动编号
        String activityId = reqVO.getActivityId();
        if (StrUtil.isEmpty(activityId) && StrUtil.isNotEmpty(reqVO.getTaskId())) { // 流程活动 Id 为空。从流程任务中获取流程活动 Id
            activityId = Optional.ofNullable(taskService.getHistoricTask(reqVO.getTaskId()))
                    .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(
                processDefinitionService.getProcessDefinitionBpmnModel(processDefinitionId), activityId);
    }

    @Override
    public BpmApprovalDetailRespVO getApprovalDetail(Long startUserId, BpmApprovalDetailReqVO reqVO) {
        // 1. 审批详情
        BpmApprovalDetailRespVO respVO = new BpmApprovalDetailRespVO();
        String processDefinitionId = reqVO.getProcessDefinitionId();
        ProcessInstance runProcessInstance = null;  // 正在运行的流程实例
        Set<String> runNodeIds = new HashSet<>(); // 已经运行的节点 Ids (BPMN XML 节点 Id)
        Map<String, ApprovalNodeInfo> runningApprovalNodes = new HashMap<>(); // 正在运行的节点的审批信息
        List<ApprovalNodeInfo> approvalNodes = new ArrayList<>();
        // 1.1 情况一：流程未发起
        if (reqVO.getProcessInstanceId() == null) {
            respVO.setStatus(BpmProcessInstanceStatusEnum.NOT_START.getStatus());
            // 1.2 情况二：流程已发起
        } else {
            // 1.2.1 获取流程实例状态
            HistoricProcessInstance processInstance = getHistoricProcessInstance(reqVO.getProcessInstanceId());
            if (processInstance == null) {
                throw exception(ErrorCodeConstants.PROCESS_INSTANCE_NOT_EXISTS);
            }
            Integer processInstanceStatus = FlowableUtils.getProcessInstanceStatus(processInstance);
            respVO.setStatus(processInstanceStatus);
            // 1.2.2 构建已运行节点的审批信息
            List<HistoricActivityInstance> historicActivityList = activityService.getActivityListByProcessInstanceId(processInstance.getId());
            AlreadyRunApproveNodeRespBO respBO = buildAlreadyRunApproveNodes(processInstance.getId(), processInstanceStatus, historicActivityList);
            approvalNodes = respBO.getApproveNodes();
            runNodeIds = respBO.getRunNodeIds();
            // 1.2.3 特殊：流程已经结束，直接 return，无需预测
            if (BpmProcessInstanceStatusEnum.isProcessEndStatus(processInstanceStatus)) {
                respVO.setApproveNodes(approvalNodes);
                return respVO;
            }
            runningApprovalNodes = respBO.getRunningApprovalNodes();
            processDefinitionId = processInstance.getProcessDefinitionId();
            runProcessInstance = getProcessInstance(processInstance.getId());
            startUserId = Long.valueOf(runProcessInstance.getStartUserId());
        }

        // 2. 流程未结束，预测未运行节点的审批信息。需要区分 BPMN 设计器 和 SIMPLE 设计器
        BpmProcessDefinitionInfoDO processDefinitionInfo = processDefinitionService.getProcessDefinitionInfo(processDefinitionId);
        // 2.1 情况一：仿钉钉流程设计器
        if (Objects.equals(BpmModelTypeEnum.SIMPLE.getType(), processDefinitionInfo.getModelType())) {
            BpmSimpleModelNodeVO simpleModel = JsonUtils.parseObject(processDefinitionInfo.getSimpleModel(), BpmSimpleModelNodeVO.class);
            List<ApprovalNodeInfo> notRunApproveNodes = new ArrayList<>();
            traverseSimpleModelNodeToBuildNotRunApproveNodes(
                    startUserId, runProcessInstance, simpleModel, runNodeIds, runningApprovalNodes, notRunApproveNodes);
            approvalNodes.addAll(notRunApproveNodes);
            respVO.setApproveNodes(approvalNodes);
            //  会不会有极端的情况：对于依次审批来说，它是已经 running，但是当前节点也要计算其它审批人？(已修改)
            // 2.2 情况二：BPMN 流程设计器
        } else if (Objects.equals(BpmModelTypeEnum.BPMN.getType(), processDefinitionInfo.getModelType())) {
            // TODO 芋艿：需要把 start 节点加出来
            // TODO Bpmn 设计器，构建未运行节点的审批信息；未完全实现
            respVO.setApproveNodes(approvalNodes);
        }
        return respVO;
    }

    /**
     * 遍历 SIMPLE 设计器模型 构建未运行节点的审批信息
     *
     * @param startUserId          流程发起人编号
     * @param processInstance      流程实例
     * @param simpleModelNode      SIMPLE 设计器模型
     * @param runNodeIds           已经运行节点的 Ids
     * @param runningApprovalNodes 正在运行的节点的审批信息
     * @param approveNodeList      未运行节点的审批信息列表
     */
    private void traverseSimpleModelNodeToBuildNotRunApproveNodes(Long startUserId,
                                                                  ProcessInstance processInstance,
                                                                  BpmSimpleModelNodeVO simpleModelNode,
                                                                  Set<String> runNodeIds,
                                                                  Map<String, ApprovalNodeInfo> runningApprovalNodes,
                                                                  List<ApprovalNodeInfo> approveNodeList) {
        if (!SimpleModelUtils.isValidNode(simpleModelNode)) {
            return;
        }
        buildNotRunApproveNodes(startUserId, processInstance, simpleModelNode, runNodeIds, runningApprovalNodes, approveNodeList);
        // 如果有子节点递归遍历子节点
        traverseSimpleModelNodeToBuildNotRunApproveNodes(
                startUserId, processInstance, simpleModelNode.getChildNode(), runNodeIds, runningApprovalNodes, approveNodeList);
    }

    private void buildNotRunApproveNodes(Long startUserId, ProcessInstance processInstance,
                                         BpmSimpleModelNodeVO node, Set<String> runNodeIds,
                                         Map<String, ApprovalNodeInfo> runningApprovalNodes,
                                         List<ApprovalNodeInfo> approveNodeList) {
        // 情况一：节点未运行：需要进行预测
        if (!runNodeIds.contains(node.getId())) {
            // 1. 对需要人工审批的审批节点，进行预测
            if (APPROVE_NODE.getType().equals(node.getType()) && USER.getType().equals(node.getApproveType())
                    || START_USER_NODE.getType().equals(node.getType())) {
                ApprovalNodeInfo approvalNodeInfo = new ApprovalNodeInfo().setNodeType(node.getType())
                        .setName(node.getName()).setStatus(NOT_START.getStatus());
                Integer candidateStrategy = START_USER_NODE.getType().equals(node.getType()) ?
                        START_USER.getStrategy() : node.getCandidateStrategy();
                approvalNodeInfo.setCandidateUserList(
                        getNotRunTaskCandidateUserList(startUserId, processInstance, node.getId(), candidateStrategy, node.getCandidateParam()));
                approveNodeList.add(approvalNodeInfo);
                // 2. 对分支节点，进行预测
            } else if (BpmSimpleModelNodeType.isBranchNode(node.getType())) {
                //  并行分支，不用预测条件。所有分支都需要遍历
                if (PARALLEL_BRANCH_NODE.getType().equals(node.getType())) {
                    node.getConditionNodes().forEach(conditionNode ->
                            traverseSimpleModelNodeToBuildNotRunApproveNodes(startUserId, processInstance, conditionNode.getChildNode()
                                    , runNodeIds, runningApprovalNodes, approveNodeList));
                } else if (CONDITION_BRANCH_NODE.getType().equals(node.getType())) {
                    for (BpmSimpleModelNodeVO conditionNode : node.getConditionNodes()) {
                        // 满足一个条件, 遍历该分支并
                        if ((processInstance != null && evalConditionExpress(processInstance, SimpleModelUtils.buildConditionExpression(conditionNode))) // 预测条件表达式的值
                                || BooleanUtil.isTrue(conditionNode.getDefaultFlow())) { // 是否默认的序列
                            traverseSimpleModelNodeToBuildNotRunApproveNodes(startUserId, processInstance, conditionNode.getChildNode(),
                                    runNodeIds, runningApprovalNodes, approveNodeList);
                            break;
                        }
                    }
                }
                // TODO 包容分支待实现
                // 3. 结束节点
            } else if (END_NODE.getType().equals(node.getType())) {
                ApprovalNodeInfo nodeProgress = new ApprovalNodeInfo();
                nodeProgress.setNodeType(node.getType());
                nodeProgress.setName(node.getName());
                nodeProgress.setStatus(NOT_START.getStatus());
                approveNodeList.add(nodeProgress);
            }
        } else {
            // 情况二：节点已经运行
            // 如果是分支节点，需要检查分支节点的运行情况
            if (BpmSimpleModelNodeType.isBranchNode(node.getType()) && ArrayUtil.isNotEmpty(node.getConditionNodes())) {
                node.getConditionNodes().forEach(conditionNode -> {
                    // 只有运行的条件，才需要遍历
                    if (runNodeIds.contains(conditionNode.getId())) {
                        traverseSimpleModelNodeToBuildNotRunApproveNodes(startUserId, processInstance, conditionNode.getChildNode()
                                , runNodeIds, runningApprovalNodes, approveNodeList);
                    }
                });
                // 如果是依次审批, 需要加其它未审批候选人
            } else if (SimpleModelUtils.isSequentialApproveNode(node) && runningApprovalNodes.containsKey(node.getId())) {
                ApprovalNodeInfo approvalNodeInfo = runningApprovalNodes.get(node.getId());
                List<User> candidateUserList = getNotRunTaskCandidateUserList(
                        startUserId, processInstance, node.getId(), node.getCandidateStrategy(), node.getCandidateParam());
                // TODO @jason：这里的逻辑，可能可以简化成，直接拿已经审批过的人的 userId 集合，从 candidateUserList remove 下。一方面简单一点，方面 calculateUsers 返回的是 set，目前不是很有序。
                ApprovalTaskInfo approvalTaskInfo = CollUtil.getFirst(approvalNodeInfo.getTasks());
                Long currentAssignedUserId = null;
                if (approvalTaskInfo != null && approvalTaskInfo.getAssigneeUser() != null) {
                    currentAssignedUserId = approvalTaskInfo.getAssigneeUser().getId();
                }
                // 找到当前审批人在候选人列表的位置
                int index = 0;
                for (User user : candidateUserList) {
                    if (user.getId().equals(currentAssignedUserId)) {
                        break;
                    }
                    index++;
                }
                // 截取当前审批人位置后面的候选人, 不包含当前审批人
                approvalNodeInfo.setCandidateUserList(CollUtil.sub(candidateUserList, ++index, candidateUserList.size()));
            }
        }
    }

    /**
     * 从已经运行活动节点构建的审批信息列表
     *
     * @param processInstanceId    流程实例 Id
     * @param processInstanceStatus 流程实例状态
     * @param historicActivityList 已经运行活动
     */
    private AlreadyRunApproveNodeRespBO buildAlreadyRunApproveNodes(String processInstanceId,
                                                                    Integer processInstanceStatus,
                                                                    List<HistoricActivityInstance> historicActivityList) {
        // 1.1 获取待处理活动：只有 "userTask" 和 "endEvent" 需要处理
        List<HistoricActivityInstance> pendingActivityNodes = filterList(historicActivityList,
                item -> BpmSimpleModelNodeType.isRecordNode(item.getActivityType()));
        // 1.2 已运行节点的 activityId
        Set<String> runNodeIds = convertSet(historicActivityList, HistoricActivityInstance::getActivityId);

        // 2.1 获取已运行的任务(包括运行中的任务)
        List<HistoricTaskInstance> taskList = taskService.getTaskListByProcessInstanceId(processInstanceId);
        Map<String, HistoricTaskInstance> taskMap = convertMap(taskList, HistoricTaskInstance::getId);

        // 2.2 获取加签的任务
        Map<String, List<HistoricTaskInstance>> addSignTaskMap = convertMultiMap(
                filterList(taskList, task -> StrUtil.isNotEmpty(task.getParentTaskId())), HistoricTaskInstance::getParentTaskId);
        // 3.1 获取节点的用户信息
        Set<Long> userIds = CollectionUtils.convertSetByFlatMap(pendingActivityNodes, activity -> {
            if (BPMN_USER_TASK_TYPE.equals(activity.getActivityType())) {
                HistoricTaskInstance task = taskMap.get(activity.getTaskId());
                Set<Long> taskUsers = CollUtil.newHashSet();
                CollUtil.addIfAbsent(taskUsers, NumberUtil.parseLong(task.getAssignee(), null));
                CollUtil.addIfAbsent(taskUsers, NumberUtil.parseLong(task.getOwner(), null));
                List<HistoricTaskInstance> addSignTasks = addSignTaskMap.get(activity.getTaskId());
                if (CollUtil.isNotEmpty(addSignTasks)) {
                    addSignTasks.forEach(item -> {
                        CollUtil.addIfAbsent(taskUsers, NumberUtil.parseLong(item.getAssignee(), null));
                        CollUtil.addIfAbsent(taskUsers, NumberUtil.parseLong(item.getOwner(), null));
                    });
                }
                return taskUsers.stream();
            } else {
                return Stream.empty();
            }
        });
        Map<Long, AdminUserRespDTO> userMap = convertMap(adminUserApi.getUserList(userIds), AdminUserRespDTO::getId);

        // 3.2 已经结束的任务转换为审批信息
        final Multimap<String, HistoricActivityInstance> runningTask = ArrayListMultimap.create(); // 运行中的任务
        List<ApprovalNodeInfo> approvalNodeList = convertList(pendingActivityNodes, activity -> {
            ApprovalNodeInfo approvalNodeInfo = new ApprovalNodeInfo().setId(activity.getId()).setName(activity.getActivityName())
                    .setStartTime(DateUtils.of(activity.getStartTime())).setEndTime(DateUtils.of(activity.getEndTime()));
            if (BPMN_USER_TASK_TYPE.equals(activity.getActivityType())) { // 用户任务
                // nodeType
                approvalNodeInfo.setNodeType(START_USER_NODE_ID.equals(activity.getActivityId()) ?
                        START_USER_NODE.getType() : APPROVE_NODE.getType());
                // status
                HistoricTaskInstance task = taskMap.get(activity.getTaskId());
                Integer taskStatus = FlowableUtils.getTaskStatus(task);
                // 运行中的任务, 会签，或签任务聚合在一起。
                if (!BpmTaskStatusEnum.isEndStatus(taskStatus)) {
                    runningTask.put(activity.getActivityId(), activity);
                    return null;
                }
                // tasks
                ApprovalTaskInfo approveTask = convertApproveTaskInfo(task, userMap);
                List<ApprovalTaskInfo> approveTasks = CollUtil.newArrayList(approveTask);
                List<HistoricTaskInstance> addSignTasks = addSignTaskMap.get(activity.getTaskId());
                if (CollUtil.isNotEmpty(addSignTasks)) { // 处理加签任务
                    approveTasks.addAll(convertList(addSignTasks, item -> convertApproveTaskInfo(item, userMap)));
                }

                approvalNodeInfo.setStatus(taskStatus);
                approvalNodeInfo.setTasks(approveTasks);
            } else if (END_NODE.getBpmnType().equals(activity.getActivityType())) {
                approvalNodeInfo.setNodeType(END_NODE.getType());
                approvalNodeInfo.setStatus(processInstanceStatus);
            }
            return approvalNodeInfo;
        });
        // 3.3 运行中的任务转换为审批信息。
        final Map<String, ApprovalNodeInfo> runningApprovalNodes = new HashMap<>(); // 正在运行节点的审批信息
        runningTask.asMap().forEach((activityId, activities) -> {
            if (CollUtil.isNotEmpty(activities)) {
                ApprovalNodeInfo approvalNodeInfo = new ApprovalNodeInfo();
                approvalNodeInfo.setNodeType(APPROVE_NODE.getType());
                approvalNodeInfo.setStatus(RUNNING.getStatus());
                List<ApprovalTaskInfo> approveTasks = CollUtil.newArrayList();
                int i = 0;
                for (HistoricActivityInstance activity : activities) {
                    HistoricTaskInstance task = taskMap.get(activity.getTaskId());
                    // 取第一个任务， 会签/或签的任务。开始时间相同的
                    if (i == 0) {
                        approvalNodeInfo.setId(activity.getId()).setName(activity.getActivityName()).
                                setStartTime(DateUtils.of(activity.getStartTime()));
                    }
                    // tasks
                    ApprovalTaskInfo approveTask = convertApproveTaskInfo(task, userMap);
                    approveTasks.add(approveTask);
                    List<HistoricTaskInstance> addSignTasks = addSignTaskMap.get(activity.getTaskId());
                    if (CollUtil.isNotEmpty(addSignTasks)) { // 处理加签任务
                        approveTasks.addAll(convertList(addSignTasks, item -> convertApproveTaskInfo(item, userMap)));
                    }
                    i++;
                }
                approvalNodeInfo.setTasks(approveTasks);
                approvalNodeList.add(approvalNodeInfo);
                runningApprovalNodes.put(activityId, approvalNodeInfo);
            }
        });
        return new AlreadyRunApproveNodeRespBO().setApproveNodes(approvalNodeList).setRunNodeIds(runNodeIds)
                .setRunningApprovalNodes(runningApprovalNodes);
    }

    private ApprovalTaskInfo convertApproveTaskInfo(HistoricTaskInstance task, Map<Long, AdminUserRespDTO> userMap) {
        if (task == null) {
            return null;
        }
        ApprovalTaskInfo approveTask = BeanUtils.toBean(task, ApprovalTaskInfo.class);
        approveTask.setStatus(FlowableUtils.getTaskStatus(task)).setReason(FlowableUtils.getTaskReason(task));
        Long taskAssignee = NumberUtil.parseLong(task.getAssignee(), null);
        if (taskAssignee != null) {
            approveTask.setAssigneeUser(BeanUtils.toBean(userMap.get(taskAssignee), User.class));
        }
        Long taskOwner = NumberUtil.parseLong(task.getOwner(), null);
        if (taskOwner != null) {
            approveTask.setOwnerUser(BeanUtils.toBean(userMap.get(taskOwner), User.class));
        }
        return approveTask;
    }

    private List<User> getNotRunTaskCandidateUserList(Long startUserId, ProcessInstance processInstance, String activityId,
                                                      Integer candidateStrategy, String candidateParam) {
        BpmTaskCandidateStrategy taskCandidateStrategy = bpmTaskCandidateInvoker.getCandidateStrategy(candidateStrategy);
        Set<Long> userIds = taskCandidateStrategy.calculateUsers(startUserId, processInstance, activityId, candidateParam);
        Map<Long, AdminUserRespDTO> adminUserMap = adminUserApi.getUserMap(userIds);
        // 需要按照候选人的顺序返回。原因是，依次审批需要按顺序展示用户
        return convertList(userIds, userId -> BeanUtils.toBean(adminUserMap.get(userId), User.class));
    }

    /**
     * 计算条件表达式的值
     *
     * @param processInstance 流程实例
     * @param express         条件表达式
     */
    private Boolean evalConditionExpress(ProcessInstance processInstance, String express) {
        if (express == null) {
            return Boolean.FALSE;
        }
        Object result = managementService.executeCommand(context -> {
            try {
                return FlowableUtils.getExpressionValue((VariableContainer) processInstance, 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);
    }

    // ========== 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.util.*;
import cn.iocoder.yudao.framework.common.pojo.PageResult;
import cn.iocoder.yudao.framework.common.util.collection.CollectionUtils;
import cn.iocoder.yudao.framework.common.util.collection.SetUtils;
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.number.NumberUtils;
import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
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.ApprovalTaskInfo;
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.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.bpm.service.task.bo.AlreadyRunApproveNodeRespBO;
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 com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.Multimap;
import jakarta.annotation.Resource;
import jakarta.validation.Valid;
import lombok.extern.slf4j.Slf4j;
import org.flowable.bpmn.constants.BpmnXMLConstants;
import org.flowable.bpmn.model.BpmnModel;
import org.flowable.bpmn.model.UserTask;
import org.flowable.common.engine.api.FlowableException;
import org.flowable.common.engine.api.variable.VariableContainer;
import org.flowable.engine.HistoryService;
import org.flowable.engine.ManagementService;
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 java.util.stream.Stream;

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.ApprovalNodeInfo;
import static cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.BpmApprovalDetailRespVO.User;
import static cn.iocoder.yudao.module.bpm.enums.ErrorCodeConstants.*;
import static cn.iocoder.yudao.module.bpm.enums.definition.BpmSimpleModelNodeType.*;
import static cn.iocoder.yudao.module.bpm.enums.definition.BpmUserTaskApproveTypeEnum.USER;
import static cn.iocoder.yudao.module.bpm.enums.task.BpmTaskStatusEnum.NOT_START;
import static cn.iocoder.yudao.module.bpm.enums.task.BpmTaskStatusEnum.RUNNING;
import static cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmTaskCandidateStrategyEnum.START_USER;
import static cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnModelConstants.START_USER_NODE_ID;

/**
 * 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 ManagementService managementService;

    @Resource
    private BpmActivityService activityService;
    @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);
    }

    @Override
    public Map<String, String> getFormFieldsPermission(BpmFormFieldsPermissionReqVO reqVO) {
        // 1.1  获取流程定义 Id
        String processDefinitionId = reqVO.getProcessDefinitionId();
        if (StrUtil.isEmpty(processDefinitionId) && StrUtil.isNotEmpty(reqVO.getProcessInstanceId())) {
            HistoricProcessInstance processInstance = getHistoricProcessInstance(reqVO.getProcessInstanceId());
            if (processInstance == null) {
                throw exception(ErrorCodeConstants.PROCESS_INSTANCE_NOT_EXISTS);
            }
            processDefinitionId = processInstance.getProcessDefinitionId();
        }

        // 1.2 获取流程活动编号
        String activityId = reqVO.getActivityId();
        if (StrUtil.isEmpty(activityId) && StrUtil.isNotEmpty(reqVO.getTaskId())) { // 流程活动 Id 为空。从流程任务中获取流程活动 Id
            activityId = Optional.ofNullable(taskService.getHistoricTask(reqVO.getTaskId()))
                    .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(
                processDefinitionService.getProcessDefinitionBpmnModel(processDefinitionId), activityId);
    }

    @Override
    public BpmApprovalDetailRespVO getApprovalDetail(Long startUserId, BpmApprovalDetailReqVO reqVO) {
        // 1. 审批详情
        BpmApprovalDetailRespVO respVO = new BpmApprovalDetailRespVO();
        String processDefinitionId = reqVO.getProcessDefinitionId();
        ProcessInstance runProcessInstance = null;  // 正在运行的流程实例
        Set<String> runNodeIds = new HashSet<>(); // 已经运行的节点 Ids (BPMN XML 节点 Id)
        Map<String, ApprovalNodeInfo> runningApprovalNodes = new HashMap<>(); // 正在运行的节点的审批信息
        List<ApprovalNodeInfo> approvalNodes = new ArrayList<>();
        // 1.1 情况一：流程未发起
        if (reqVO.getProcessInstanceId() == null) {
            respVO.setStatus(BpmProcessInstanceStatusEnum.NOT_START.getStatus());
            // 1.2 情况二：流程已发起
        } else {
            // 1.2.1 获取流程实例状态
            HistoricProcessInstance processInstance = getHistoricProcessInstance(reqVO.getProcessInstanceId());
            if (processInstance == null) {
                throw exception(ErrorCodeConstants.PROCESS_INSTANCE_NOT_EXISTS);
            }
            Integer processInstanceStatus = FlowableUtils.getProcessInstanceStatus(processInstance);
            respVO.setStatus(processInstanceStatus);
            // 1.2.2 构建已运行节点的审批信息
            List<HistoricActivityInstance> historicActivityList = activityService.getActivityListByProcessInstanceId(processInstance.getId());
            AlreadyRunApproveNodeRespBO respBO = buildAlreadyRunApproveNodes(processInstance.getId(), processInstanceStatus, historicActivityList);
            approvalNodes = respBO.getApproveNodes();
            runNodeIds = respBO.getRunNodeIds();
            // 1.2.3 特殊：流程已经结束，直接 return，无需预测
            if (BpmProcessInstanceStatusEnum.isProcessEndStatus(processInstanceStatus)) {
                respVO.setApproveNodes(approvalNodes);
                return respVO;
            }
            runningApprovalNodes = respBO.getRunningApprovalNodes();
            processDefinitionId = processInstance.getProcessDefinitionId();
            runProcessInstance = getProcessInstance(processInstance.getId());
            startUserId = Long.valueOf(runProcessInstance.getStartUserId());
        }

        // 2. 流程未结束，预测未运行节点的审批信息。需要区分 BPMN 设计器 和 SIMPLE 设计器
        BpmProcessDefinitionInfoDO processDefinitionInfo = processDefinitionService.getProcessDefinitionInfo(processDefinitionId);
        // 2.1 情况一：仿钉钉流程设计器
        if (Objects.equals(BpmModelTypeEnum.SIMPLE.getType(), processDefinitionInfo.getModelType())) {
            BpmSimpleModelNodeVO simpleModel = JsonUtils.parseObject(processDefinitionInfo.getSimpleModel(), BpmSimpleModelNodeVO.class);
            List<ApprovalNodeInfo> notRunApproveNodes = new ArrayList<>();
            traverseSimpleModelNodeToBuildNotRunApproveNodes(
                    startUserId, runProcessInstance, simpleModel, runNodeIds, runningApprovalNodes, notRunApproveNodes);
            approvalNodes.addAll(notRunApproveNodes);
            respVO.setApproveNodes(approvalNodes);
            //  会不会有极端的情况：对于依次审批来说，它是已经 running，但是当前节点也要计算其它审批人？(已修改)
            // 2.2 情况二：BPMN 流程设计器
        } else if (Objects.equals(BpmModelTypeEnum.BPMN.getType(), processDefinitionInfo.getModelType())) {
            // TODO 芋艿：需要把 start 节点加出来
            // TODO Bpmn 设计器，构建未运行节点的审批信息；未完全实现
            respVO.setApproveNodes(approvalNodes);
        }
        return respVO;
    }

    /**
     * 遍历 SIMPLE 设计器模型 构建未运行节点的审批信息
     *
     * @param startUserId          流程发起人编号
     * @param processInstance      流程实例
     * @param simpleModelNode      SIMPLE 设计器模型
     * @param runNodeIds           已经运行节点的 Ids
     * @param runningApprovalNodes 正在运行的节点的审批信息
     * @param approveNodeList      未运行节点的审批信息列表
     */
    private void traverseSimpleModelNodeToBuildNotRunApproveNodes(Long startUserId,
                                                                  ProcessInstance processInstance,
                                                                  BpmSimpleModelNodeVO simpleModelNode,
                                                                  Set<String> runNodeIds,
                                                                  Map<String, ApprovalNodeInfo> runningApprovalNodes,
                                                                  List<ApprovalNodeInfo> approveNodeList) {
        if (!SimpleModelUtils.isValidNode(simpleModelNode)) {
            return;
        }
        buildNotRunApproveNodes(startUserId, processInstance, simpleModelNode, runNodeIds, runningApprovalNodes, approveNodeList);
        // 如果有子节点递归遍历子节点
        traverseSimpleModelNodeToBuildNotRunApproveNodes(
                startUserId, processInstance, simpleModelNode.getChildNode(), runNodeIds, runningApprovalNodes, approveNodeList);
    }

    private void buildNotRunApproveNodes(Long startUserId, ProcessInstance processInstance,
                                         BpmSimpleModelNodeVO node, Set<String> runNodeIds,
                                         Map<String, ApprovalNodeInfo> runningApprovalNodes,
                                         List<ApprovalNodeInfo> approveNodeList) {
        // 情况一：节点未运行：需要进行预测
        if (!runNodeIds.contains(node.getId())) {
            // 1. 对需要人工审批的审批节点，进行预测
            if (APPROVE_NODE.getType().equals(node.getType()) && USER.getType().equals(node.getApproveType())
                    || START_USER_NODE.getType().equals(node.getType())) {
                ApprovalNodeInfo approvalNodeInfo = new ApprovalNodeInfo().setNodeType(node.getType())
                        .setName(node.getName()).setStatus(NOT_START.getStatus());
                Integer candidateStrategy = START_USER_NODE.getType().equals(node.getType()) ?
                        START_USER.getStrategy() : node.getCandidateStrategy();
                approvalNodeInfo.setCandidateUserList(
                        getNotRunTaskCandidateUserList(startUserId, processInstance, node.getId(), candidateStrategy, node.getCandidateParam()));
                approveNodeList.add(approvalNodeInfo);
                // 2. 对分支节点，进行预测
            } else if (BpmSimpleModelNodeType.isBranchNode(node.getType())) {
                //  并行分支，不用预测条件。所有分支都需要遍历
                if (PARALLEL_BRANCH_NODE.getType().equals(node.getType())) {
                    node.getConditionNodes().forEach(conditionNode ->
                            traverseSimpleModelNodeToBuildNotRunApproveNodes(startUserId, processInstance, conditionNode.getChildNode()
                                    , runNodeIds, runningApprovalNodes, approveNodeList));
                } else if (CONDITION_BRANCH_NODE.getType().equals(node.getType())) {
                    for (BpmSimpleModelNodeVO conditionNode : node.getConditionNodes()) {
                        // 满足一个条件, 遍历该分支并
                        if ((processInstance != null && evalConditionExpress(processInstance, SimpleModelUtils.buildConditionExpression(conditionNode))) // 预测条件表达式的值
                                || BooleanUtil.isTrue(conditionNode.getDefaultFlow())) { // 是否默认的序列
                            traverseSimpleModelNodeToBuildNotRunApproveNodes(startUserId, processInstance, conditionNode.getChildNode(),
                                    runNodeIds, runningApprovalNodes, approveNodeList);
                            break;
                        }
                    }
                }
                // TODO 包容分支待实现
                // 3. 结束节点
            } else if (END_NODE.getType().equals(node.getType())) {
                ApprovalNodeInfo nodeProgress = new ApprovalNodeInfo();
                nodeProgress.setNodeType(node.getType());
                nodeProgress.setName(node.getName());
                nodeProgress.setStatus(NOT_START.getStatus());
                approveNodeList.add(nodeProgress);
            }
        } else {
            // 情况二：节点已经运行
            // 如果是分支节点，需要检查分支节点的运行情况
            if (BpmSimpleModelNodeType.isBranchNode(node.getType()) && ArrayUtil.isNotEmpty(node.getConditionNodes())) {
                node.getConditionNodes().forEach(conditionNode -> {
                    // 只有运行的条件，才需要遍历
                    if (runNodeIds.contains(conditionNode.getId())) {
                        traverseSimpleModelNodeToBuildNotRunApproveNodes(startUserId, processInstance, conditionNode.getChildNode()
                                , runNodeIds, runningApprovalNodes, approveNodeList);
                    }
                });
                // 如果是依次审批, 需要加其它未审批候选人
            } else if (SimpleModelUtils.isSequentialApproveNode(node) && runningApprovalNodes.containsKey(node.getId())) {
                ApprovalNodeInfo approvalNodeInfo = runningApprovalNodes.get(node.getId());
                List<User> candidateUserList = getNotRunTaskCandidateUserList(
                        startUserId, processInstance, node.getId(), node.getCandidateStrategy(), node.getCandidateParam());
                // TODO @jason：这里的逻辑，可能可以简化成，直接拿已经审批过的人的 userId 集合，从 candidateUserList remove 下。一方面简单一点，方面 calculateUsers 返回的是 set，目前不是很有序。
                ApprovalTaskInfo approvalTaskInfo = CollUtil.getFirst(approvalNodeInfo.getTasks());
                Long currentAssignedUserId = null;
                if (approvalTaskInfo != null && approvalTaskInfo.getAssigneeUser() != null) {
                    currentAssignedUserId = approvalTaskInfo.getAssigneeUser().getId();
                }
                // 找到当前审批人在候选人列表的位置
                int index = 0;
                for (User user : candidateUserList) {
                    if (user.getId().equals(currentAssignedUserId)) {
                        break;
                    }
                    index++;
                }
                // 截取当前审批人位置后面的候选人, 不包含当前审批人
                approvalNodeInfo.setCandidateUserList(CollUtil.sub(candidateUserList, ++index, candidateUserList.size()));
            }
        }
    }

    /**
     * 从已经运行活动节点构建的审批信息列表
     *
     * @param processInstanceId    流程实例 Id
     * @param processInstanceStatus 流程实例状态
     * @param historicActivityList 已经运行活动
     */
    private AlreadyRunApproveNodeRespBO buildAlreadyRunApproveNodes(String processInstanceId,
                                                                    Integer processInstanceStatus,
                                                                    List<HistoricActivityInstance> historicActivityList) {
        // 1.1 获取待处理活动：只有 "userTask" 和 "endEvent" 需要处理
        List<HistoricActivityInstance> pendingActivityNodes = filterList(historicActivityList,
                item -> BpmSimpleModelNodeType.isRecordNode(item.getActivityType()));
        // 1.2 已运行节点的 activityId
        Set<String> runNodeIds = convertSet(historicActivityList, HistoricActivityInstance::getActivityId);

        // 2.1 获取已运行的任务(包括运行中的任务)
        List<HistoricTaskInstance> taskList = taskService.getTaskListByProcessInstanceId(processInstanceId, false);
        Map<String, HistoricTaskInstance> taskMap = convertMap(taskList, HistoricTaskInstance::getId);

        // 2.2 获取加签的任务
        Map<String, List<HistoricTaskInstance>> addSignTaskMap = convertMultiMap(
                filterList(taskList, task -> StrUtil.isNotEmpty(task.getParentTaskId())), HistoricTaskInstance::getParentTaskId);
        // 3.1 获取节点的用户信息
        Set<Long> userIds = CollectionUtils.convertSetByFlatMap(pendingActivityNodes, activity -> {
            if (BPMN_USER_TASK_TYPE.equals(activity.getActivityType())) {
                HistoricTaskInstance task = taskMap.get(activity.getTaskId());
                Set<Long> taskUsers = CollUtil.newHashSet();
                CollUtil.addIfAbsent(taskUsers, NumberUtil.parseLong(task.getAssignee(), null));
                CollUtil.addIfAbsent(taskUsers, NumberUtil.parseLong(task.getOwner(), null));
                List<HistoricTaskInstance> addSignTasks = addSignTaskMap.get(activity.getTaskId());
                if (CollUtil.isNotEmpty(addSignTasks)) {
                    addSignTasks.forEach(item -> {
                        CollUtil.addIfAbsent(taskUsers, NumberUtil.parseLong(item.getAssignee(), null));
                        CollUtil.addIfAbsent(taskUsers, NumberUtil.parseLong(item.getOwner(), null));
                    });
                }
                return taskUsers.stream();
            } else {
                return Stream.empty();
            }
        });
        Map<Long, AdminUserRespDTO> userMap = convertMap(adminUserApi.getUserList(userIds), AdminUserRespDTO::getId);

        // 3.2 已经结束的任务转换为审批信息
        final Multimap<String, HistoricActivityInstance> runningTask = ArrayListMultimap.create(); // 运行中的任务
        List<ApprovalNodeInfo> approvalNodeList = convertList(pendingActivityNodes, activity -> {
            ApprovalNodeInfo approvalNodeInfo = new ApprovalNodeInfo().setId(activity.getId()).setName(activity.getActivityName())
                    .setStartTime(DateUtils.of(activity.getStartTime())).setEndTime(DateUtils.of(activity.getEndTime()));
            if (BPMN_USER_TASK_TYPE.equals(activity.getActivityType())) { // 用户任务
                // nodeType
                approvalNodeInfo.setNodeType(START_USER_NODE_ID.equals(activity.getActivityId()) ?
                        START_USER_NODE.getType() : APPROVE_NODE.getType());
                // status
                HistoricTaskInstance task = taskMap.get(activity.getTaskId());
                Integer taskStatus = FlowableUtils.getTaskStatus(task);
                // 运行中的任务, 会签，或签任务聚合在一起。
                if (!BpmTaskStatusEnum.isEndStatus(taskStatus)) {
                    runningTask.put(activity.getActivityId(), activity);
                    return null;
                }
                // tasks
                ApprovalTaskInfo approveTask = convertApproveTaskInfo(task, userMap);
                List<ApprovalTaskInfo> approveTasks = CollUtil.newArrayList(approveTask);
                List<HistoricTaskInstance> addSignTasks = addSignTaskMap.get(activity.getTaskId());
                if (CollUtil.isNotEmpty(addSignTasks)) { // 处理加签任务
                    approveTasks.addAll(convertList(addSignTasks, item -> convertApproveTaskInfo(item, userMap)));
                }

                approvalNodeInfo.setStatus(taskStatus);
                approvalNodeInfo.setTasks(approveTasks);
            } else if (END_NODE.getBpmnType().equals(activity.getActivityType())) {
                approvalNodeInfo.setNodeType(END_NODE.getType());
                approvalNodeInfo.setStatus(processInstanceStatus);
            }
            return approvalNodeInfo;
        });
        // 3.3 运行中的任务转换为审批信息。
        final Map<String, ApprovalNodeInfo> runningApprovalNodes = new HashMap<>(); // 正在运行节点的审批信息
        runningTask.asMap().forEach((activityId, activities) -> {
            if (CollUtil.isNotEmpty(activities)) {
                ApprovalNodeInfo approvalNodeInfo = new ApprovalNodeInfo();
                approvalNodeInfo.setNodeType(APPROVE_NODE.getType());
                approvalNodeInfo.setStatus(RUNNING.getStatus());
                List<ApprovalTaskInfo> approveTasks = CollUtil.newArrayList();
                int i = 0;
                for (HistoricActivityInstance activity : activities) {
                    HistoricTaskInstance task = taskMap.get(activity.getTaskId());
                    // 取第一个任务， 会签/或签的任务。开始时间相同的
                    if (i == 0) {
                        approvalNodeInfo.setId(activity.getId()).setName(activity.getActivityName()).
                                setStartTime(DateUtils.of(activity.getStartTime()));
                    }
                    // tasks
                    ApprovalTaskInfo approveTask = convertApproveTaskInfo(task, userMap);
                    approveTasks.add(approveTask);
                    List<HistoricTaskInstance> addSignTasks = addSignTaskMap.get(activity.getTaskId());
                    if (CollUtil.isNotEmpty(addSignTasks)) { // 处理加签任务
                        approveTasks.addAll(convertList(addSignTasks, item -> convertApproveTaskInfo(item, userMap)));
                    }
                    i++;
                }
                approvalNodeInfo.setTasks(approveTasks);
                approvalNodeList.add(approvalNodeInfo);
                runningApprovalNodes.put(activityId, approvalNodeInfo);
            }
        });
        return new AlreadyRunApproveNodeRespBO().setApproveNodes(approvalNodeList).setRunNodeIds(runNodeIds)
                .setRunningApprovalNodes(runningApprovalNodes);
    }

    private ApprovalTaskInfo convertApproveTaskInfo(HistoricTaskInstance task, Map<Long, AdminUserRespDTO> userMap) {
        if (task == null) {
            return null;
        }
        ApprovalTaskInfo approveTask = BeanUtils.toBean(task, ApprovalTaskInfo.class);
        approveTask.setStatus(FlowableUtils.getTaskStatus(task)).setReason(FlowableUtils.getTaskReason(task));
        Long taskAssignee = NumberUtil.parseLong(task.getAssignee(), null);
        if (taskAssignee != null) {
            approveTask.setAssigneeUser(BeanUtils.toBean(userMap.get(taskAssignee), User.class));
        }
        Long taskOwner = NumberUtil.parseLong(task.getOwner(), null);
        if (taskOwner != null) {
            approveTask.setOwnerUser(BeanUtils.toBean(userMap.get(taskOwner), User.class));
        }
        return approveTask;
    }

    private List<User> getNotRunTaskCandidateUserList(Long startUserId, ProcessInstance processInstance, String activityId,
                                                      Integer candidateStrategy, String candidateParam) {
        BpmTaskCandidateStrategy taskCandidateStrategy = bpmTaskCandidateInvoker.getCandidateStrategy(candidateStrategy);
        Set<Long> userIds = taskCandidateStrategy.calculateUsers(startUserId, processInstance, activityId, candidateParam);
        Map<Long, AdminUserRespDTO> adminUserMap = adminUserApi.getUserMap(userIds);
        // 需要按照候选人的顺序返回。原因是，依次审批需要按顺序展示用户
        return convertList(userIds, userId -> BeanUtils.toBean(adminUserMap.get(userId), User.class));
    }

    /**
     * 计算条件表达式的值
     *
     * @param processInstance 流程实例
     * @param express         条件表达式
     */
    private Boolean evalConditionExpress(ProcessInstance processInstance, String express) {
        if (express == null) {
            return Boolean.FALSE;
        }
        Object result = managementService.executeCommand(context -> {
            try {
                return FlowableUtils.getExpressionValue((VariableContainer) processInstance, 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);
    }

    @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> activityInstances = getActivityListByProcessInstanceId(id);
        List<HistoricTaskInstance> taskInstances = taskService.getTaskListByProcessInstanceId(id, true);
        // 1.4 查询关联用户、部门信息
        Set<Long> userIds = SetUtils.asSet(Long.valueOf(processInstance.getStartUserId()));
        taskInstances.forEach(task -> {
            CollUtil.addIfAbsent(userIds, NumberUtils.parseLong((task.getAssignee())));
            CollUtil.addIfAbsent(userIds, NumberUtils.parseLong((task.getOwner())));
        });
        Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(userIds);
        Map<Long, DeptRespDTO> deptMap = deptApi.getDeptMap(
                convertSet(userMap.values(), AdminUserRespDTO::getDeptId));

        // 2.1 拼接进度信息
        Set<String> unfinishedTaskActivityIds = convertSet(activityInstances, HistoricActivityInstance::getActivityId,
                activityInstance -> activityInstance.getEndTime() == null);
        Set<String> finishedTaskActivityIds = convertSet(activityInstances, HistoricActivityInstance::getActivityId,
                activityInstance -> activityInstance.getEndTime() != null
                        && ObjectUtil.notEqual(activityInstance.getActivityType(), BpmnXMLConstants.ELEMENT_SEQUENCE_FLOW));
        Set<String> finishedSequenceFlowActivityIds = convertSet(activityInstances, 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))) {
            taskInstances.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
        return BpmProcessInstanceConvert.INSTANCE.buildProcessInstanceBpmnModelView(processInstance, taskInstances, bpmnModel,
                unfinishedTaskActivityIds, finishedTaskActivityIds, finishedSequenceFlowActivityIds, rejectTaskActivityIds,
                userMap, deptMap);
    }

    private List<HistoricActivityInstance> getActivityListByProcessInstanceId(String id) {
        return historyService.createHistoricActivityInstanceQuery().processInstanceId(id)
                .orderByHistoricActivityInstanceStartTime().asc().list();
    }

    // ========== 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
@@ -73,9 +73,10 @@ public interface BpmTaskService {
      * 获得指定流程实例的流程任务列表，包括所有状态的
      *
      * @param processInstanceId 流程实例的编号
+     * @param asc 是否升序
      * @return 流程任务列表
      */
-    List<HistoricTaskInstance> getTaskListByProcessInstanceId(String processInstanceId);
+    List<HistoricTaskInstance> getTaskListByProcessInstanceId(String processInstanceId, Boolean asc);
     /**
      * 获取任务
@@ -170,16 +170,16 @@ public class BpmTaskServiceImpl implements BpmTaskService {
     }
     @Override
-    public List<HistoricTaskInstance> getTaskListByProcessInstanceId(String processInstanceId) {
-        List<HistoricTaskInstance> tasks = historyService.createHistoricTaskInstanceQuery()
+    public List<HistoricTaskInstance> getTaskListByProcessInstanceId(String processInstanceId, Boolean asc) {
+        HistoricTaskInstanceQuery query = historyService.createHistoricTaskInstanceQuery()
                 .includeTaskLocalVariables()
-                .processInstanceId(processInstanceId)
-                .orderByHistoricTaskInstanceStartTime().desc() // 创建时间倒序
-                .list();
-        if (CollUtil.isEmpty(tasks)) {
-            return Collections.emptyList();
+                .processInstanceId(processInstanceId);
+        if (Boolean.TRUE.equals(asc)) {
+            query.orderByHistoricTaskInstanceStartTime().asc();
+        } else {
+            query.orderByHistoricTaskInstanceStartTime().desc();
         }
-        return tasks;
+        return query.list();
     }
     /**