!1161 同步最新的 bpm 改动

Merge pull request !1161 from 芋道源码/feature/bpm

!1161 同步最新的 bpm 改动
Merge pull request !1161 from 芋道源码/feature/bpm
芋道源码 · Gitee
2 parents 87b75e18 b67c2d5e
Showing 13 changed files with 819 additions and 42 deletions
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/task/vo/task/BpmTaskPageReqVO.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/convert/task/BpmTaskConvert.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/behavior/BpmParallelMultiInstanceBehavior.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/behavior/BpmSequentialMultiInstanceBehavior.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/candidate/strategy/other/BpmTaskCandidateExpressionStrategy.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/util/BpmnModelUtils.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/util/SimpleModelUtils.java
yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/definition/BpmModelServiceImpl.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/BpmTaskServiceImpl.java
yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/controller/admin/finance/vo/payment/ErpFinancePaymentRespVO.java
yudao-module-erp/yudao-module-erp-biz/src/main/java/cn/iocoder/yudao/module/erp/controller/admin/finance/vo/receipt/ErpFinanceReceiptRespVO.java
@@ -4,8 +4,6 @@ import cn.iocoder.yudao.framework.common.pojo.PageParam;
 import cn.iocoder.yudao.framework.common.util.date.DateUtils;
 import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
-import lombok.EqualsAndHashCode;
-import lombok.ToString;
 import org.springframework.format.annotation.DateTimeFormat;
  
 import java.time.LocalDateTime;
@@ -17,6 +15,9 @@ public class BpmTaskPageReqVO extends PageParam {
     @Schema(description = "流程任务名", example = "芋道")
     private String name;
  
+    @Schema(description = "流程分类", example = "1")
+    private String category;
+
     @Schema(description = "创建时间")
     @DateTimeFormat(pattern = DateUtils.FORMAT_YEAR_MONTH_DAY_HOUR_MINUTE_SECOND)
     private LocalDateTime[] createTime;
@@ -124,12 +124,18 @@ public interface BpmTaskConvert {
     }
  
     default BpmTaskRespVO buildTodoTask(Task todoTask, List<Task> childrenTasks,
-                                              Map<Integer, BpmTaskRespVO.OperationButtonSetting> buttonsSetting) {
-        return BeanUtils.toBean(todoTask, BpmTaskRespVO.class)
+                                        Map<Integer, BpmTaskRespVO.OperationButtonSetting> buttonsSetting,
+                                        BpmFormDO form) {
+        BpmTaskRespVO bpmTaskRespVO = BeanUtils.toBean(todoTask, BpmTaskRespVO.class)
                 .setStatus(FlowableUtils.getTaskStatus(todoTask)).setReason(FlowableUtils.getTaskReason(todoTask))
                 .setButtonsSetting(buttonsSetting)
                 .setChildren(convertList(childrenTasks, childTask -> BeanUtils.toBean(childTask, BpmTaskRespVO.class)
                         .setStatus(FlowableUtils.getTaskStatus(childTask))));
+        if (form != null) {
+            bpmTaskRespVO.setFormId(form.getId()).setFormName(form.getName())
+                    .setFormConf(form.getConf()).setFormFields(form.getFields());
+        }
+        return bpmTaskRespVO;
     }
  
     default BpmMessageSendWhenTaskCreatedReqDTO convert(ProcessInstance processInstance, AdminUserRespDTO startUser,
@@ -54,13 +54,13 @@ public class BpmParallelMultiInstanceBehavior extends ParallelMultiInstanceBehav
         Set<Long> assigneeUserIds = (Set<Long>) execution.getVariable(super.collectionVariable, Set.class);
         if (assigneeUserIds == null) {
             assigneeUserIds = taskCandidateInvoker.calculateUsersByTask(execution);
-            execution.setVariable(super.collectionVariable, assigneeUserIds);
             if (CollUtil.isEmpty(assigneeUserIds)) {
                 // 特殊：如果没有处理人的情况下，至少有一个 null 空元素，避免自动通过！
                 // 这样，保证在 BpmUserTaskActivityBehavior 至少创建出一个 Task 任务
                 // 用途：1）审批人为空时；2）审批类型为自动通过、自动拒绝时
                 assigneeUserIds = SetUtils.asSet((Long) null);
             }
+            execution.setVariableLocal(super.collectionVariable, assigneeUserIds);
         }
         return assigneeUserIds.size();
     }
@@ -43,17 +43,18 @@ public class BpmSequentialMultiInstanceBehavior extends SequentialMultiInstanceB
         super.collectionElementVariable = FlowableUtils.formatExecutionCollectionElementVariable(execution.getCurrentActivityId());
  
         // 第二步，获取任务的所有处理人
+        // 不使用 execution.getVariable 原因：目前依次审批任务回退后 collectionVariable 变量没有清理， 如果重新进入该任务不会重新分配审批人
         @SuppressWarnings("unchecked")
-        Set<Long> assigneeUserIds = (Set<Long>) execution.getVariable(super.collectionVariable, Set.class);
+        Set<Long> assigneeUserIds = (Set<Long>) execution.getVariableLocal(super.collectionVariable, Set.class);
         if (assigneeUserIds == null) {
             assigneeUserIds = taskCandidateInvoker.calculateUsersByTask(execution);
-            execution.setVariable(super.collectionVariable, assigneeUserIds);
             if (CollUtil.isEmpty(assigneeUserIds)) {
                 // 特殊：如果没有处理人的情况下，至少有一个 null 空元素，避免自动通过！
                 // 这样，保证在 BpmUserTaskActivityBehavior 至少创建出一个 Task 任务
                 // 用途：1）审批人为空时；2）审批类型为自动通过、自动拒绝时
                 assigneeUserIds = SetUtils.asSet((Long) null);
             }
+            execution.setVariableLocal(super.collectionVariable, assigneeUserIds);
         }
         return assigneeUserIds.size();
     }
@@ -18,7 +18,7 @@ import java.util.Set;
  * @author jason
  */
 @Component
-public class BpmTaskCandidateFormSDeptLeaderStrategy extends AbstractBpmTaskCandidateDeptLeaderStrategy {
+public class BpmTaskCandidateFormDeptLeaderStrategy extends AbstractBpmTaskCandidateDeptLeaderStrategy {
  
     @Override
     public BpmTaskCandidateStrategyEnum getStrategy() {
@@ -4,10 +4,14 @@ import cn.hutool.core.convert.Convert;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateStrategy;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmTaskCandidateStrategyEnum;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.FlowableUtils;
+import com.google.common.collect.Sets;
+import lombok.extern.slf4j.Slf4j;
 import org.flowable.bpmn.model.BpmnModel;
+import org.flowable.common.engine.api.FlowableException;
 import org.flowable.engine.delegate.DelegateExecution;
 import org.springframework.stereotype.Component;
  
+import java.util.HashMap;
 import java.util.Map;
 import java.util.Set;
  
@@ -17,6 +21,7 @@ import java.util.Set;
  * @author 芋道源码
  */
 @Component
+@Slf4j
 public class BpmTaskCandidateExpressionStrategy implements BpmTaskCandidateStrategy {
  
     @Override
@@ -38,8 +43,16 @@ public class BpmTaskCandidateExpressionStrategy implements BpmTaskCandidateStrat
     @Override
     public Set<Long> calculateUsersByActivity(BpmnModel bpmnModel, String activityId, String param,
                                               Long startUserId, String processDefinitionId, Map<String, Object> processVariables) {
-        Object result = FlowableUtils.getExpressionValue(processVariables, param);
-        return Convert.toSet(Long.class, result);
+        Map<String, Object> variables = processVariables == null ? new HashMap<>() : processVariables;
+        try {
+            Object result = FlowableUtils.getExpressionValue(variables, param);
+            return Convert.toSet(Long.class, result);
+        } catch (FlowableException ex) {
+            // 预测未运行的节点时候，表达式如果包含 execution 或者不存在的流程变量会抛异常，
+            log.warn("[calculateUsersByActivity][表达式({}) 变量({}) 解析报错", param, variables, ex);
+            // 不能预测候选人，返回空列表, 避免流程无法进行
+            return Sets.newHashSet();
+        }
     }
  
 }
 \ No newline at end of file
@@ -73,7 +73,6 @@ public class BpmnModelUtils {
         extensionElement.setName(name);
         attributes.forEach((key, value) -> {
             ExtensionAttribute extensionAttribute = new ExtensionAttribute(key, value);
-            extensionAttribute.setNamespace(FLOWABLE_EXTENSIONS_NAMESPACE);
             extensionElement.addAttribute(extensionAttribute);
         });
         element.addExtensionElement(extensionElement);
@@ -278,8 +277,8 @@ public class BpmnModelUtils {
         }
         Map<String, String> fieldsPermission = MapUtil.newHashMap();
         extensionElements.forEach(element -> {
-            String field = element.getAttributeValue(FLOWABLE_EXTENSIONS_NAMESPACE, FORM_FIELD_PERMISSION_ELEMENT_FIELD_ATTRIBUTE);
-            String permission = element.getAttributeValue(FLOWABLE_EXTENSIONS_NAMESPACE, FORM_FIELD_PERMISSION_ELEMENT_PERMISSION_ATTRIBUTE);
+            String field = element.getAttributeValue(null, FORM_FIELD_PERMISSION_ELEMENT_FIELD_ATTRIBUTE);
+            String permission = element.getAttributeValue(null, FORM_FIELD_PERMISSION_ELEMENT_PERMISSION_ATTRIBUTE);
             if (StrUtil.isNotEmpty(field) && StrUtil.isNotEmpty(permission)) {
                 fieldsPermission.put(field, permission);
             }
@@ -321,9 +320,9 @@ public class BpmnModelUtils {
         }
         Map<Integer, BpmTaskRespVO.OperationButtonSetting> buttonSettings = Maps.newHashMapWithExpectedSize(extensionElements.size());
         extensionElements.forEach(element -> {
-            String id = element.getAttributeValue(FLOWABLE_EXTENSIONS_NAMESPACE, BUTTON_SETTING_ELEMENT_ID_ATTRIBUTE);
-            String displayName = element.getAttributeValue(FLOWABLE_EXTENSIONS_NAMESPACE, BUTTON_SETTING_ELEMENT_DISPLAY_NAME_ATTRIBUTE);
-            String enable = element.getAttributeValue(FLOWABLE_EXTENSIONS_NAMESPACE, BUTTON_SETTING_ELEMENT_ENABLE_ATTRIBUTE);
+            String id = element.getAttributeValue(null, BUTTON_SETTING_ELEMENT_ID_ATTRIBUTE);
+            String displayName = element.getAttributeValue(null, BUTTON_SETTING_ELEMENT_DISPLAY_NAME_ATTRIBUTE);
+            String enable = element.getAttributeValue(null, BUTTON_SETTING_ELEMENT_ENABLE_ATTRIBUTE);
             if (StrUtil.isNotEmpty(id)) {
                 BpmTaskRespVO.OperationButtonSetting setting = new BpmTaskRespVO.OperationButtonSetting();
                 buttonSettings.put(Integer.valueOf(id), setting.setDisplayName(displayName).setEnable(Boolean.parseBoolean(enable)));
@@ -720,7 +719,7 @@ public class BpmnModelUtils {
                             && evalConditionExpress(variables, flow.getConditionExpression()));
             if (matchSequenceFlow == null) {
                 matchSequenceFlow = CollUtil.findOne(gateway.getOutgoingFlows(),
-                        flow -> ObjUtil.notEqual(gateway.getDefaultFlow(), flow.getId()));
+                        flow -> ObjUtil.equal(gateway.getDefaultFlow(), flow.getId()));
                 // 特殊：没有默认的情况下，并且只有 1 个条件，则认为它是默认的
                 if (matchSequenceFlow == null && gateway.getOutgoingFlows().size() == 1) {
                     matchSequenceFlow = gateway.getOutgoingFlows().get(0);
@@ -742,7 +741,7 @@ public class BpmnModelUtils {
                             && evalConditionExpress(variables, flow.getConditionExpression()));
             if (CollUtil.isEmpty(matchSequenceFlows)) {
                 matchSequenceFlows = CollUtil.filterNew(gateway.getOutgoingFlows(),
-                        flow -> ObjUtil.notEqual(gateway.getDefaultFlow(), flow.getId()));
+                        flow -> ObjUtil.equal(gateway.getDefaultFlow(), flow.getId()));
                 // 特殊：没有默认的情况下，并且只有 1 个条件，则认为它是默认的
                 if (CollUtil.isEmpty(matchSequenceFlows) && gateway.getOutgoingFlows().size() == 1) {
                     matchSequenceFlows = gateway.getOutgoingFlows();
@@ -83,7 +83,7 @@ public class SimpleModelUtils {
  
     private static BpmSimpleModelNodeVO buildStartNode() {
         return new BpmSimpleModelNodeVO().setId(START_EVENT_NODE_ID)
-                .setName(BpmSimpleModelNodeType.START_USER_NODE.getName())
+                .setName(BpmSimpleModelNodeType.START_NODE.getName())
                 .setType(BpmSimpleModelNodeType.START_NODE.getType());
     }
  
@@ -65,7 +65,7 @@ public class BpmModelServiceImpl implements BpmModelService {
     public List<Model> getModelList(String name) {
         ModelQuery modelQuery = repositoryService.createModelQuery();
         if (StrUtil.isNotEmpty(name)) {
-            modelQuery.modelNameLike(name);
+            modelQuery.modelNameLike("%" + name + "%");
         }
         return modelQuery.list();
     }
-package cn.iocoder.yudao.module.bpm.service.task;

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

import java.util.*;

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

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

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

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

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

    @Resource
    private BpmProcessInstanceEventPublisher processInstanceEventPublisher;

    @Resource
    private BpmTaskCandidateInvoker taskCandidateInvoker;

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

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

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

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

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

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


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

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

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

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

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

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

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

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

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

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

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

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

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

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

        // 按照 activityId 分组，构建 ApprovalNodeInfo 节点
        Map<String, HistoricTaskInstance> taskMap = convertMap(tasks, HistoricTaskInstance::getId);
        return convertList(runningTaskMap.entrySet(), entry -> {
            String activityId = entry.getKey();
            List<HistoricActivityInstance> taskActivities = entry.getValue();
            // 构建活动节点
            FlowElement flowNode = BpmnModelUtils.getFlowElementById(bpmnModel, activityId);
            HistoricActivityInstance firstActivity = CollUtil.getFirst(taskActivities); // 取第一个任务，会签/或签的任务，开始时间相同
            ActivityNode activityNode = new ActivityNode().setId(firstActivity.getActivityId()).setName(firstActivity.getActivityName())
                    .setNodeType(BpmSimpleModelNodeType.APPROVE_NODE.getType()).setStatus(BpmTaskStatusEnum.RUNNING.getStatus())
                    .setCandidateStrategy(BpmnModelUtils.parseCandidateStrategy(flowNode))
                    .setStartTime(DateUtils.of(CollUtil.getFirst(taskActivities).getStartTime()))
                    .setTasks(new ArrayList<>());
            // 处理每个任务的 tasks 属性
            for (HistoricActivityInstance activity : taskActivities) {
                HistoricTaskInstance task = taskMap.get(activity.getTaskId());
                activityNode.getTasks().add(BpmProcessInstanceConvert.INSTANCE.buildApprovalTaskInfo(task));
                // 加签子任务，需要过滤掉已经完成的加签子任务
                List<HistoricTaskInstance> childrenTasks = filterList(
                        taskService.getAllChildrenTaskListByParentTaskId(activity.getTaskId(), tasks),
                        childTask -> childTask.getEndTime() == null);
                if (CollUtil.isNotEmpty(childrenTasks)) {
                    activityNode.getTasks().addAll(convertList(childrenTasks, BpmProcessInstanceConvert.INSTANCE::buildApprovalTaskInfo));
                }
            }
            // 处理每个任务的 candidateUsers 属性：如果是依次审批，需要预测它的后续审批人。因为 Task 是审批完一个，创建一个新的 Task
            if (BpmnModelUtils.isSequentialUserTask(flowNode)) {
                List<Long> candidateUserIds = getTaskCandidateUserList(bpmnModel, flowNode.getId(),
                        startUserId, processDefinition.getId(), processVariables);
                // 截取当前审批人位置后面的候选人，不包含当前审批人
                ActivityNodeTask approvalTaskInfo = CollUtil.getFirst(activityNode.getTasks());
                Assert.notNull(approvalTaskInfo, "任务不能为空");
                int index = CollUtil.indexOf(candidateUserIds, userId -> ObjectUtils.equalsAny(userId, approvalTaskInfo.getOwner(),
                        approvalTaskInfo.getAssignee())); // 委派或者向前加签情况，需要先比较 owner
                activityNode.setCandidateUserIds(CollUtil.sub(candidateUserIds, index + 1, candidateUserIds.size()));
            }
            return activityNode;
        });
    }

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

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

        ActivityNode activityNode = new ActivityNode().setId(node.getId()).setName(node.getName())
                .setNodeType(node.getType()).setCandidateStrategy(node.getCandidateStrategy())
                .setStatus(BpmTaskStatusEnum.NOT_START.getStatus());

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

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

        // 3. 抄送节点
        if (CollUtil.isEmpty(runActivityIds) && // 流程发起时：需要展示抄送节点，用于选择抄送人
                BpmSimpleModelNodeType.COPY_NODE.getType().equals(node.getType())) {
            return activityNode;
        }
        return null;
    }

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

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

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

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

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

    @Override
    public BpmProcessInstanceBpmnModelViewRespVO getProcessInstanceBpmnModelView(String id) {
        // 1.1 获得流程实例
        HistoricProcessInstance processInstance = getHistoricProcessInstance(id);
        if (processInstance == null) {
            return null;
        }
        // 1.2 获得流程定义
        BpmnModel bpmnModel = processDefinitionService.getProcessDefinitionBpmnModel(processInstance.getProcessDefinitionId());
        if (bpmnModel == null) {
            return null;
        }
        BpmSimpleModelNodeVO simpleModel = null;
        BpmProcessDefinitionInfoDO processDefinitionInfo = processDefinitionService.getProcessDefinitionInfo(
                processInstance.getProcessDefinitionId());
        if (processDefinitionInfo != null && BpmModelTypeEnum.SIMPLE.getType().equals(processDefinitionInfo.getModelType())) {
            simpleModel = JsonUtils.parseObject(processDefinitionInfo.getSimpleModel(), BpmSimpleModelNodeVO.class);
        }
        // 1.3 获得流程实例对应的活动实例列表 + 任务列表
        List<HistoricActivityInstance> activities = taskService.getActivityListByProcessInstanceId(id);
        List<HistoricTaskInstance> tasks = taskService.getTaskListByProcessInstanceId(id, true);

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

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

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

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

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

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

        // 2. 创建流程实例
        if (variables == null) {
            variables = new HashMap<>();
        }
        FlowableUtils.filterProcessInstanceFormVariable(variables); // 过滤一下，避免 ProcessInstance 系统级的变量被占用
        variables.put(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_START_USER_ID, userId); // 设置流程变量，发起人 ID
        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/ServiceTask 列表
        BpmnModel bpmnModel = processDefinitionService.getProcessDefinitionBpmnModel(definition.getId());
        List<Task> tasks = BpmTaskCandidateStartUserSelectStrategy.getStartUserSelectTaskList(bpmnModel);
        if (CollUtil.isEmpty(tasks)) {
            return;
        }

        // 2. 校验发起人自选审批人的审批人和抄送人是否都配置了
        tasks.forEach(task -> {
            List<Long> assignees = startUserSelectAssignees != null ? startUserSelectAssignees.get(task.getId()) : null;
            if (CollUtil.isEmpty(assignees)) {
                throw exception(PROCESS_INSTANCE_START_USER_SELECT_ASSIGNEES_NOT_CONFIG, task.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, task.getName(), assignee);
                }
            });
        });
    }

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

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

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

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

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

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

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

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

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

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

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

}
 \ No newline at end of file
+package cn.iocoder.yudao.module.bpm.service.task;
+
+import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.collection.ListUtil;
+import cn.hutool.core.lang.Assert;
+import cn.hutool.core.util.ArrayUtil;
+import cn.hutool.core.util.ObjectUtil;
+import cn.hutool.core.util.StrUtil;
+import cn.iocoder.yudao.framework.common.pojo.PageResult;
+import cn.iocoder.yudao.framework.common.util.date.DateUtils;
+import cn.iocoder.yudao.framework.common.util.json.JsonUtils;
+import cn.iocoder.yudao.framework.common.util.object.ObjectUtils;
+import cn.iocoder.yudao.framework.common.util.object.PageUtils;
+import cn.iocoder.yudao.module.bpm.api.task.dto.BpmProcessInstanceCreateReqDTO;
+import cn.iocoder.yudao.module.bpm.controller.admin.definition.vo.model.simple.BpmSimpleModelNodeVO;
+import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.*;
+import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.BpmApprovalDetailRespVO.ActivityNodeTask;
+import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.task.BpmTaskRespVO;
+import cn.iocoder.yudao.module.bpm.convert.task.BpmProcessInstanceConvert;
+import cn.iocoder.yudao.module.bpm.dal.dataobject.definition.BpmProcessDefinitionInfoDO;
+import cn.iocoder.yudao.module.bpm.enums.ErrorCodeConstants;
+import cn.iocoder.yudao.module.bpm.enums.definition.BpmModelTypeEnum;
+import cn.iocoder.yudao.module.bpm.enums.definition.BpmSimpleModelNodeType;
+import cn.iocoder.yudao.module.bpm.enums.task.BpmProcessInstanceStatusEnum;
+import cn.iocoder.yudao.module.bpm.enums.task.BpmReasonEnum;
+import cn.iocoder.yudao.module.bpm.enums.task.BpmTaskStatusEnum;
+import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateInvoker;
+import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.dept.BpmTaskCandidateStartUserSelectStrategy;
+import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnModelConstants;
+import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnVariableConstants;
+import cn.iocoder.yudao.module.bpm.framework.flowable.core.event.BpmProcessInstanceEventPublisher;
+import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.BpmnModelUtils;
+import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.FlowableUtils;
+import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.SimpleModelUtils;
+import cn.iocoder.yudao.module.bpm.service.definition.BpmProcessDefinitionService;
+import cn.iocoder.yudao.module.bpm.service.message.BpmMessageService;
+import cn.iocoder.yudao.module.system.api.dept.DeptApi;
+import cn.iocoder.yudao.module.system.api.dept.dto.DeptRespDTO;
+import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
+import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
+import jakarta.annotation.Resource;
+import jakarta.validation.Valid;
+import lombok.extern.slf4j.Slf4j;
+import org.flowable.bpmn.constants.BpmnXMLConstants;
+import org.flowable.bpmn.model.*;
+import org.flowable.engine.HistoryService;
+import org.flowable.engine.RuntimeService;
+import org.flowable.engine.history.HistoricActivityInstance;
+import org.flowable.engine.history.HistoricProcessInstance;
+import org.flowable.engine.history.HistoricProcessInstanceQuery;
+import org.flowable.engine.repository.ProcessDefinition;
+import org.flowable.engine.runtime.ProcessInstance;
+import org.flowable.task.api.history.HistoricTaskInstance;
+import org.springframework.context.annotation.Lazy;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.validation.annotation.Validated;
+
+import java.util.*;
+
+import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
+import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.*;
+import static cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.BpmApprovalDetailRespVO.ActivityNode;
+import static cn.iocoder.yudao.module.bpm.enums.ErrorCodeConstants.*;
+import static cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnModelConstants.START_USER_NODE_ID;
+import static java.util.Arrays.asList;
+import static java.util.Collections.singletonList;
+import static org.flowable.bpmn.constants.BpmnXMLConstants.*;
+
+/**
+ * 流程实例 Service 实现类
+ * <p>
+ * ProcessDefinition & ProcessInstance & Execution & Task 的关系：
+ * 1. <a href="https://blog.csdn.net/bobozai86/article/details/105210414" />
+ * <p>
+ * HistoricProcessInstance & ProcessInstance 的关系：
+ * 1. <a href=" https://my.oschina.net/843294669/blog/71902" />
+ * <p>
+ * 简单来说，前者 = 历史 + 运行中的流程实例，后者仅是运行中的流程实例
+ *
+ * @author 芋道源码
+ */
+@Service
+@Validated
+@Slf4j
+public class BpmProcessInstanceServiceImpl implements BpmProcessInstanceService {
+
+    @Resource
+    private RuntimeService runtimeService;
+    @Resource
+    private HistoryService historyService;
+
+    @Resource
+    private BpmProcessDefinitionService processDefinitionService;
+    @Resource
+    @Lazy // 避免循环依赖
+    private BpmTaskService taskService;
+    @Resource
+    private BpmMessageService messageService;
+
+    @Resource
+    private AdminUserApi adminUserApi;
+    @Resource
+    private DeptApi deptApi;
+
+    @Resource
+    private BpmProcessInstanceEventPublisher processInstanceEventPublisher;
+
+    @Resource
+    private BpmTaskCandidateInvoker taskCandidateInvoker;
+
+    // ========== Query 查询相关方法 ==========
+
+    @Override
+    public ProcessInstance getProcessInstance(String id) {
+        return runtimeService.createProcessInstanceQuery()
+                .includeProcessVariables()
+                .processInstanceId(id)
+                .singleResult();
+    }
+
+    @Override
+    public List<ProcessInstance> getProcessInstances(Set<String> ids) {
+        return runtimeService.createProcessInstanceQuery().processInstanceIds(ids).list();
+    }
+
+    @Override
+    public HistoricProcessInstance getHistoricProcessInstance(String id) {
+        return historyService.createHistoricProcessInstanceQuery().processInstanceId(id).includeProcessVariables().singleResult();
+    }
+
+    @Override
+    public List<HistoricProcessInstance> getHistoricProcessInstances(Set<String> ids) {
+        return historyService.createHistoricProcessInstanceQuery().processInstanceIds(ids).list();
+    }
+
+    @Override
+    public PageResult<HistoricProcessInstance> getProcessInstancePage(Long userId,
+                                                                      BpmProcessInstancePageReqVO pageReqVO) {
+        // 通过 BpmProcessInstanceExtDO 表，先查询到对应的分页
+        HistoricProcessInstanceQuery processInstanceQuery = historyService.createHistoricProcessInstanceQuery()
+                .includeProcessVariables()
+                .processInstanceTenantId(FlowableUtils.getTenantId())
+                .orderByProcessInstanceStartTime().desc();
+        if (userId != null) { // 【我的流程】菜单时，需要传递该字段
+            processInstanceQuery.startedBy(String.valueOf(userId));
+        } else if (pageReqVO.getStartUserId() != null) { // 【管理流程】菜单时，才会传递该字段
+            processInstanceQuery.startedBy(String.valueOf(pageReqVO.getStartUserId()));
+        }
+        if (StrUtil.isNotEmpty(pageReqVO.getName())) {
+            processInstanceQuery.processInstanceNameLike("%" + pageReqVO.getName() + "%");
+        }
+        if (StrUtil.isNotEmpty(pageReqVO.getProcessDefinitionKey())) {
+            processInstanceQuery.processDefinitionKey(pageReqVO.getProcessDefinitionKey());
+        }
+        if (StrUtil.isNotEmpty(pageReqVO.getCategory())) {
+            processInstanceQuery.processDefinitionCategory(pageReqVO.getCategory());
+        }
+        if (pageReqVO.getStatus() != null) {
+            processInstanceQuery.variableValueEquals(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_STATUS, pageReqVO.getStatus());
+        }
+        if (ArrayUtil.isNotEmpty(pageReqVO.getCreateTime())) {
+            processInstanceQuery.startedAfter(DateUtils.of(pageReqVO.getCreateTime()[0]));
+            processInstanceQuery.startedBefore(DateUtils.of(pageReqVO.getCreateTime()[1]));
+        }
+        // 查询数量
+        long processInstanceCount = processInstanceQuery.count();
+        if (processInstanceCount == 0) {
+            return PageResult.empty(processInstanceCount);
+        }
+        // 查询列表
+        List<HistoricProcessInstance> processInstanceList = processInstanceQuery.listPage(PageUtils.getStart(pageReqVO), pageReqVO.getPageSize());
+        return new PageResult<>(processInstanceList, processInstanceCount);
+    }
+
+
+    private Map<String, String> getFormFieldsPermission(BpmnModel bpmnModel,
+                                                        String activityId, String taskId) {
+        // 1. 获取流程活动编号。流程活动 Id 为空事，从流程任务中获取流程活动 Id
+        if (StrUtil.isEmpty(activityId) && StrUtil.isNotEmpty(taskId)) {
+            activityId = Optional.ofNullable(taskService.getHistoricTask(taskId))
+                    .map(HistoricTaskInstance::getTaskDefinitionKey).orElse(null);
+        }
+        if (StrUtil.isEmpty(activityId)) {
+            return null;
+        }
+
+        // 2. 从 BpmnModel 中解析表单字段权限
+        return BpmnModelUtils.parseFormFieldsPermission(bpmnModel, activityId);
+    }
+
+    @Override
+    public BpmApprovalDetailRespVO getApprovalDetail(Long loginUserId, BpmApprovalDetailReqVO reqVO) {
+        // 1.1 从 reqVO 中，读取公共变量
+        Long startUserId = loginUserId; // 流程发起人
+        HistoricProcessInstance historicProcessInstance = null; // 流程实例
+        Integer processInstanceStatus = BpmProcessInstanceStatusEnum.NOT_START.getStatus(); // 流程状态
+        Map<String, Object> processVariables = reqVO.getProcessVariables(); // 流程变量
+        // 1.2 如果是流程已发起的场景，则使用流程实例的数据
+        if (reqVO.getProcessInstanceId() != null) {
+            historicProcessInstance = getHistoricProcessInstance(reqVO.getProcessInstanceId());
+            if (historicProcessInstance == null) {
+                throw exception(ErrorCodeConstants.PROCESS_INSTANCE_NOT_EXISTS);
+            }
+            startUserId = Long.valueOf(historicProcessInstance.getStartUserId());
+            processInstanceStatus = FlowableUtils.getProcessInstanceStatus(historicProcessInstance);
+            processVariables = historicProcessInstance.getProcessVariables();
+        }
+        // 1.3 读取其它相关数据
+        ProcessDefinition processDefinition = processDefinitionService.getProcessDefinition(
+                historicProcessInstance != null ? historicProcessInstance.getProcessDefinitionId() : reqVO.getProcessDefinitionId());
+        BpmProcessDefinitionInfoDO processDefinitionInfo = processDefinitionService.getProcessDefinitionInfo(processDefinition.getId());
+        BpmnModel bpmnModel = processDefinitionService.getProcessDefinitionBpmnModel(processDefinition.getId());
+
+        // 2.1 已结束 + 进行中的活动节点
+        List<ActivityNode> endActivityNodes = null; // 已结束的审批信息
+        List<ActivityNode> runActivityNodes = null; // 进行中的审批信息
+        List<HistoricActivityInstance> activities = null; // 流程实例列表
+        if (reqVO.getProcessInstanceId() != null) {
+            activities = taskService.getActivityListByProcessInstanceId(reqVO.getProcessInstanceId());
+            List<HistoricTaskInstance> tasks = taskService.getTaskListByProcessInstanceId(reqVO.getProcessInstanceId(), true);
+            endActivityNodes = getEndActivityNodeList(startUserId, bpmnModel, processDefinitionInfo,
+                    historicProcessInstance, processInstanceStatus, activities, tasks);
+            runActivityNodes = getRunApproveNodeList(startUserId, bpmnModel, processDefinition, processVariables, activities, tasks);
+        }
+
+        // 2.2 流程已经结束，直接 return，无需预测
+        if (BpmProcessInstanceStatusEnum.isProcessEndStatus(processInstanceStatus)) {
+            return buildApprovalDetail(reqVO, bpmnModel, processDefinition, processDefinitionInfo, historicProcessInstance,
+                    processInstanceStatus, endActivityNodes, runActivityNodes, null, null);
+        }
+
+        // 3.1 计算当前登录用户的待办任务
+        // TODO @jason：有一个极端情况，如果一个用户有 2 个 task A 和 B，A 已经通过，B 需要审核。这个时，通过 A 进来，todo 拿到 B，会不会表单权限不一致哈。
+        BpmTaskRespVO todoTask = taskService.getFirstTodoTask(loginUserId, reqVO.getProcessInstanceId());
+
+        // 3.2 预测未运行节点的审批信息
+        List<ActivityNode> simulateActivityNodes = getSimulateApproveNodeList(startUserId, bpmnModel, processDefinitionInfo,
+                processVariables, activities);
+
+        // 4. 拼接最终数据
+        return buildApprovalDetail(reqVO, bpmnModel, processDefinition, processDefinitionInfo, historicProcessInstance,
+                processInstanceStatus, endActivityNodes, runActivityNodes, simulateActivityNodes, todoTask);
+    }
+
+    /**
+     * 拼接审批详情的最终数据
+     * <p>
+     * 主要是，拼接审批人的用户信息、部门信息
+     */
+    private BpmApprovalDetailRespVO buildApprovalDetail(BpmApprovalDetailReqVO reqVO,
+                                                        BpmnModel bpmnModel,
+                                                        ProcessDefinition processDefinition,
+                                                        BpmProcessDefinitionInfoDO processDefinitionInfo,
+                                                        HistoricProcessInstance processInstance,
+                                                        Integer processInstanceStatus,
+                                                        List<ActivityNode> endApprovalNodeInfos,
+                                                        List<ActivityNode> runningApprovalNodeInfos,
+                                                        List<ActivityNode> simulateApprovalNodeInfos,
+                                                        BpmTaskRespVO todoTask) {
+        // 1. 获取所有需要读取用户信息的 userIds
+        List<ActivityNode> approveNodes = newArrayList(asList(endApprovalNodeInfos, runningApprovalNodeInfos, simulateApprovalNodeInfos));
+        Set<Long> userIds = BpmProcessInstanceConvert.INSTANCE.parseUserIds(processInstance, approveNodes, todoTask);
+        Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(userIds);
+        Map<Long, DeptRespDTO> deptMap = deptApi.getDeptMap(convertSet(userMap.values(), AdminUserRespDTO::getDeptId));
+
+        // 2. 表单权限
+        Map<String, String> formFieldsPermission = getFormFieldsPermission(bpmnModel, reqVO.getActivityId(), reqVO.getTaskId());
+
+        // 3. 拼接数据
+        return BpmProcessInstanceConvert.INSTANCE.buildApprovalDetail(bpmnModel, processDefinition, processDefinitionInfo, processInstance,
+                processInstanceStatus, approveNodes, todoTask, formFieldsPermission, userMap, deptMap);
+    }
+
+    /**
+     * 获得【已结束】的活动节点们
+     */
+    private List<ActivityNode> getEndActivityNodeList(Long startUserId, BpmnModel bpmnModel,
+                                                      BpmProcessDefinitionInfoDO processDefinitionInfo,
+                                                      HistoricProcessInstance historicProcessInstance, Integer processInstanceStatus,
+                                                      List<HistoricActivityInstance> activities, List<HistoricTaskInstance> tasks) {
+        // 遍历 tasks 列表，只处理已结束的 UserTask
+        // 为什么不通过 activities 呢？因为，加签场景下，它只存在于 tasks，没有 activities，导致如果遍历 activities 的话，它无法成为一个节点
+        List<HistoricTaskInstance> endTasks = filterList(tasks, task -> task.getEndTime() != null);
+        List<ActivityNode> approvalNodes = convertList(endTasks, task -> {
+            FlowElement flowNode = BpmnModelUtils.getFlowElementById(bpmnModel, task.getTaskDefinitionKey());
+            ActivityNode activityNode = new ActivityNode().setId(task.getTaskDefinitionKey()).setName(task.getName())
+                    .setNodeType(START_USER_NODE_ID.equals(task.getTaskDefinitionKey()) ?
+                            BpmSimpleModelNodeType.START_USER_NODE.getType() : BpmSimpleModelNodeType.APPROVE_NODE.getType())
+                    .setStatus(FlowableUtils.getTaskStatus(task))
+                    .setCandidateStrategy(BpmnModelUtils.parseCandidateStrategy(flowNode))
+                    .setStartTime(DateUtils.of(task.getCreateTime())).setEndTime(DateUtils.of(task.getEndTime()))
+                    .setTasks(singletonList(BpmProcessInstanceConvert.INSTANCE.buildApprovalTaskInfo(task)));
+            // 如果是取消状态，则跳过
+            if (BpmTaskStatusEnum.isCancelStatus(activityNode.getStatus())) {
+                return null;
+            }
+            return activityNode;
+        });
+
+        // 遍历 activities，只处理已结束的 StartEvent、EndEvent
+        List<HistoricActivityInstance> endActivities = filterList(activities, activity -> activity.getEndTime() != null
+                && (StrUtil.equalsAny(activity.getActivityType(), ELEMENT_EVENT_START, ELEMENT_EVENT_END)));
+        endActivities.forEach(activity -> {
+            // StartEvent：只处理 BPMN 的场景。因为，SIMPLE 情况下，已经有 START_USER_NODE 节点
+            if (ELEMENT_EVENT_START.equals(activity.getActivityType())
+                    && BpmModelTypeEnum.BPMN.getType().equals(processDefinitionInfo.getModelType())) {
+                ActivityNodeTask startTask = new ActivityNodeTask().setId(BpmnModelConstants.START_USER_NODE_ID)
+                        .setAssignee(startUserId).setStatus(BpmTaskStatusEnum.APPROVE.getStatus());
+                ActivityNode startNode = new ActivityNode().setId(startTask.getId())
+                        .setName(BpmSimpleModelNodeType.START_USER_NODE.getName())
+                        .setNodeType(BpmSimpleModelNodeType.START_USER_NODE.getType())
+                        .setStatus(startTask.getStatus()).setTasks(ListUtil.of(startTask))
+                        .setStartTime(DateUtils.of(activity.getStartTime())).setEndTime(DateUtils.of(activity.getEndTime()));
+                approvalNodes.add(0, startNode);
+                return;
+            }
+            // EndEvent
+            if (ELEMENT_EVENT_END.equals(activity.getActivityType())) {
+                if (BpmProcessInstanceStatusEnum.isRejectStatus(processInstanceStatus)) {
+                    // 拒绝情况下，不需要展示 EndEvent 结束节点。原因是：前端已经展示 x 效果，无需重复展示
+                    return;
+                }
+                ActivityNode endNode = new ActivityNode().setId(activity.getId())
+                        .setName(BpmSimpleModelNodeType.END_NODE.getName())
+                        .setNodeType(BpmSimpleModelNodeType.END_NODE.getType()).setStatus(processInstanceStatus)
+                        .setStartTime(DateUtils.of(activity.getStartTime())).setEndTime(DateUtils.of(activity.getEndTime()));
+                String reason = FlowableUtils.getProcessInstanceReason(historicProcessInstance);
+                if (StrUtil.isNotEmpty(reason)) {
+                    endNode.setTasks(singletonList(new ActivityNodeTask().setId(endNode.getId())
+                            .setStatus(endNode.getStatus()).setReason(reason)));
+                }
+                approvalNodes.add(endNode);
+            }
+        });
+        return approvalNodes;
+    }
+
+    /**
+     * 获得【进行中】的活动节点们
+     */
+    private List<ActivityNode> getRunApproveNodeList(Long startUserId,
+                                                     BpmnModel bpmnModel,
+                                                     ProcessDefinition processDefinition,
+                                                     Map<String, Object> processVariables,
+                                                     List<HistoricActivityInstance> activities,
+                                                     List<HistoricTaskInstance> tasks) {
+        // 构建运行中的任务，基于 activityId 分组
+        List<HistoricActivityInstance> runActivities = filterList(activities, activity -> activity.getEndTime() == null
+                && (StrUtil.equalsAny(activity.getActivityType(), ELEMENT_TASK_USER)));
+        Map<String, List<HistoricActivityInstance>> runningTaskMap = convertMultiMap(runActivities, HistoricActivityInstance::getActivityId);
+
+        // 按照 activityId 分组，构建 ApprovalNodeInfo 节点
+        Map<String, HistoricTaskInstance> taskMap = convertMap(tasks, HistoricTaskInstance::getId);
+        return convertList(runningTaskMap.entrySet(), entry -> {
+            String activityId = entry.getKey();
+            List<HistoricActivityInstance> taskActivities = entry.getValue();
+            // 构建活动节点
+            FlowElement flowNode = BpmnModelUtils.getFlowElementById(bpmnModel, activityId);
+            HistoricActivityInstance firstActivity = CollUtil.getFirst(taskActivities); // 取第一个任务，会签/或签的任务，开始时间相同
+            ActivityNode activityNode = new ActivityNode().setId(firstActivity.getActivityId()).setName(firstActivity.getActivityName())
+                    .setNodeType(BpmSimpleModelNodeType.APPROVE_NODE.getType()).setStatus(BpmTaskStatusEnum.RUNNING.getStatus())
+                    .setCandidateStrategy(BpmnModelUtils.parseCandidateStrategy(flowNode))
+                    .setStartTime(DateUtils.of(CollUtil.getFirst(taskActivities).getStartTime()))
+                    .setTasks(new ArrayList<>());
+            // 处理每个任务的 tasks 属性
+            for (HistoricActivityInstance activity : taskActivities) {
+                HistoricTaskInstance task = taskMap.get(activity.getTaskId());
+                activityNode.getTasks().add(BpmProcessInstanceConvert.INSTANCE.buildApprovalTaskInfo(task));
+                // 加签子任务，需要过滤掉已经完成的加签子任务
+                List<HistoricTaskInstance> childrenTasks = filterList(
+                        taskService.getAllChildrenTaskListByParentTaskId(activity.getTaskId(), tasks),
+                        childTask -> childTask.getEndTime() == null);
+                if (CollUtil.isNotEmpty(childrenTasks)) {
+                    activityNode.getTasks().addAll(convertList(childrenTasks, BpmProcessInstanceConvert.INSTANCE::buildApprovalTaskInfo));
+                }
+            }
+            // 处理每个任务的 candidateUsers 属性：如果是依次审批，需要预测它的后续审批人。因为 Task 是审批完一个，创建一个新的 Task
+            if (BpmnModelUtils.isSequentialUserTask(flowNode)) {
+                List<Long> candidateUserIds = getTaskCandidateUserList(bpmnModel, flowNode.getId(),
+                        startUserId, processDefinition.getId(), processVariables);
+                // 截取当前审批人位置后面的候选人，不包含当前审批人
+                ActivityNodeTask approvalTaskInfo = CollUtil.getFirst(activityNode.getTasks());
+                Assert.notNull(approvalTaskInfo, "任务不能为空");
+                int index = CollUtil.indexOf(candidateUserIds, userId -> ObjectUtils.equalsAny(userId, approvalTaskInfo.getOwner(),
+                        approvalTaskInfo.getAssignee())); // 委派或者向前加签情况，需要先比较 owner
+                activityNode.setCandidateUserIds(CollUtil.sub(candidateUserIds, index + 1, candidateUserIds.size()));
+            }
+            return activityNode;
+        });
+    }
+
+    /**
+     * 获得【预测（未来）】的活动节点们
+     */
+    private List<ActivityNode> getSimulateApproveNodeList(Long startUserId, BpmnModel bpmnModel,
+                                                          BpmProcessDefinitionInfoDO processDefinitionInfo,
+                                                          Map<String, Object> processVariables,
+                                                          List<HistoricActivityInstance> activities) {
+        // TODO @芋艿：【可优化】在驳回场景下，未来的预测准确性不高。原因是，驳回后，HistoricActivityInstance 包括了历史的操作，不是只有 startEvent 到当前节点的记录
+        Set<String> runActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId);
+        // 情况一：BPMN 设计器
+        if (Objects.equals(BpmModelTypeEnum.BPMN.getType(), processDefinitionInfo.getModelType())) {
+            List<FlowElement> flowElements = BpmnModelUtils.simulateProcess(bpmnModel, processVariables);
+            return convertList(flowElements, flowElement -> buildNotRunApproveNodeForBpmn(startUserId, bpmnModel,
+                    processDefinitionInfo, processVariables, flowElement, runActivityIds));
+        }
+        // 情况二：SIMPLE 设计器
+        if (Objects.equals(BpmModelTypeEnum.SIMPLE.getType(), processDefinitionInfo.getModelType())) {
+            BpmSimpleModelNodeVO simpleModel = JsonUtils.parseObject(processDefinitionInfo.getSimpleModel(), BpmSimpleModelNodeVO.class);
+            List<BpmSimpleModelNodeVO> simpleNodes = SimpleModelUtils.simulateProcess(simpleModel, processVariables);
+            return convertList(simpleNodes, simpleNode -> buildNotRunApproveNodeForSimple(startUserId, bpmnModel,
+                    processDefinitionInfo, processVariables, simpleNode, runActivityIds));
+        }
+        throw new IllegalArgumentException("未知设计器类型：" + processDefinitionInfo.getModelType());
+    }
+
+    private ActivityNode buildNotRunApproveNodeForSimple(Long startUserId, BpmnModel bpmnModel,
+                                                         BpmProcessDefinitionInfoDO processDefinitionInfo, Map<String, Object> processVariables,
+                                                         BpmSimpleModelNodeVO node, Set<String> runActivityIds) {
+        // TODO @芋艿：【可优化】在驳回场景下，未来的预测准确性不高。原因是，驳回后，HistoricActivityInstance 包括了历史的操作，不是只有 startEvent 到当前节点的记录
+        if (runActivityIds.contains(node.getId())) {
+            return null;
+        }
+
+        ActivityNode activityNode = new ActivityNode().setId(node.getId()).setName(node.getName())
+                .setNodeType(node.getType()).setCandidateStrategy(node.getCandidateStrategy())
+                .setStatus(BpmTaskStatusEnum.NOT_START.getStatus());
+
+        // 1. 开始节点/审批节点
+        if (ObjectUtils.equalsAny(node.getType(),
+                BpmSimpleModelNodeType.START_USER_NODE.getType(),
+                BpmSimpleModelNodeType.APPROVE_NODE.getType())) {
+            List<Long> candidateUserIds = getTaskCandidateUserList(bpmnModel, node.getId(),
+                    startUserId, processDefinitionInfo.getProcessDefinitionId(), processVariables);
+            activityNode.setCandidateUserIds(candidateUserIds);
+            return activityNode;
+        }
+
+        // 2. 结束节点
+        if (BpmSimpleModelNodeType.END_NODE.getType().equals(node.getType())) {
+            return activityNode;
+        }
+
+        // 3. 抄送节点
+        if (CollUtil.isEmpty(runActivityIds) && // 流程发起时：需要展示抄送节点，用于选择抄送人
+                BpmSimpleModelNodeType.COPY_NODE.getType().equals(node.getType())) {
+            return activityNode;
+        }
+        return null;
+    }
+
+    private ActivityNode buildNotRunApproveNodeForBpmn(Long startUserId, BpmnModel bpmnModel,
+                                                       BpmProcessDefinitionInfoDO processDefinitionInfo, Map<String, Object> processVariables,
+                                                       FlowElement node, Set<String> runActivityIds) {
+        if (runActivityIds.contains(node.getId())) {
+            return null;
+        }
+        ActivityNode activityNode = new ActivityNode().setId(node.getId()).setStatus(BpmTaskStatusEnum.NOT_START.getStatus());
+
+        // 1. 开始节点
+        if (node instanceof StartEvent) {
+            return activityNode.setName(BpmSimpleModelNodeType.START_USER_NODE.getName())
+                    .setNodeType(BpmSimpleModelNodeType.START_USER_NODE.getType());
+        }
+
+        // 2. 审批节点
+        if (node instanceof UserTask) {
+            List<Long> candidateUserIds = getTaskCandidateUserList(bpmnModel, node.getId(),
+                    startUserId, processDefinitionInfo.getProcessDefinitionId(), processVariables);
+            return activityNode.setName(node.getName()).setNodeType(BpmSimpleModelNodeType.APPROVE_NODE.getType())
+                    .setCandidateStrategy(BpmnModelUtils.parseCandidateStrategy(node))
+                    .setCandidateUserIds(candidateUserIds);
+        }
+
+        // 3. 结束节点
+        if (node instanceof EndEvent) {
+            return activityNode.setName(BpmSimpleModelNodeType.END_NODE.getName())
+                    .setNodeType(BpmSimpleModelNodeType.END_NODE.getType());
+        }
+        return null;
+    }
+
+    private List<Long> getTaskCandidateUserList(BpmnModel bpmnModel, String activityId,
+                                                Long startUserId, String processDefinitionId, Map<String, Object> processVariables) {
+        Set<Long> userIds = taskCandidateInvoker.calculateUsersByActivity(bpmnModel, activityId,
+                startUserId, processDefinitionId, processVariables);
+        return new ArrayList<>(userIds);
+    }
+
+    @Override
+    public BpmProcessInstanceBpmnModelViewRespVO getProcessInstanceBpmnModelView(String id) {
+        // 1.1 获得流程实例
+        HistoricProcessInstance processInstance = getHistoricProcessInstance(id);
+        if (processInstance == null) {
+            return null;
+        }
+        // 1.2 获得流程定义
+        BpmnModel bpmnModel = processDefinitionService.getProcessDefinitionBpmnModel(processInstance.getProcessDefinitionId());
+        if (bpmnModel == null) {
+            return null;
+        }
+        BpmSimpleModelNodeVO simpleModel = null;
+        BpmProcessDefinitionInfoDO processDefinitionInfo = processDefinitionService.getProcessDefinitionInfo(
+                processInstance.getProcessDefinitionId());
+        if (processDefinitionInfo != null && BpmModelTypeEnum.SIMPLE.getType().equals(processDefinitionInfo.getModelType())) {
+            simpleModel = JsonUtils.parseObject(processDefinitionInfo.getSimpleModel(), BpmSimpleModelNodeVO.class);
+        }
+        // 1.3 获得流程实例对应的活动实例列表 + 任务列表
+        List<HistoricActivityInstance> activities = taskService.getActivityListByProcessInstanceId(id);
+        List<HistoricTaskInstance> tasks = taskService.getTaskListByProcessInstanceId(id, true);
+
+        // 2.1 拼接进度信息
+        Set<String> unfinishedTaskActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId,
+                activityInstance -> activityInstance.getEndTime() == null);
+        Set<String> finishedTaskActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId,
+                activityInstance -> activityInstance.getEndTime() != null
+                        && ObjectUtil.notEqual(activityInstance.getActivityType(), BpmnXMLConstants.ELEMENT_SEQUENCE_FLOW));
+        Set<String> finishedSequenceFlowActivityIds = convertSet(activities, HistoricActivityInstance::getActivityId,
+                activityInstance -> activityInstance.getEndTime() != null
+                        && ObjectUtil.equals(activityInstance.getActivityType(), BpmnXMLConstants.ELEMENT_SEQUENCE_FLOW));
+        // 特殊：会签情况下，会有部分已完成（审批）、部分未完成（待审批），此时需要 finishedTaskActivityIds 移除掉
+        finishedTaskActivityIds.removeAll(unfinishedTaskActivityIds);
+        // 特殊：如果流程实例被拒绝，则需要计算是哪个活动节点。
+        // 注意，只取最后一个。因为会存在多次拒绝的情况，拒绝驳回到指定节点
+        Set<String> rejectTaskActivityIds = CollUtil.newHashSet();
+        if (BpmProcessInstanceStatusEnum.isRejectStatus(FlowableUtils.getProcessInstanceStatus(processInstance))) {
+            tasks.stream()
+                    .filter(task -> BpmTaskStatusEnum.isRejectStatus(FlowableUtils.getTaskStatus(task)))
+                    .max(Comparator.comparing(HistoricTaskInstance::getEndTime))
+                    .ifPresent(reject -> rejectTaskActivityIds.add(reject.getTaskDefinitionKey()));
+            finishedTaskActivityIds.removeAll(rejectTaskActivityIds);
+        }
+
+        // 2.2 拼接基础信息
+        Set<Long> userIds = BpmProcessInstanceConvert.INSTANCE.parseUserIds02(processInstance, tasks);
+        Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(userIds);
+        Map<Long, DeptRespDTO> deptMap = deptApi.getDeptMap(convertSet(userMap.values(), AdminUserRespDTO::getDeptId));
+        return BpmProcessInstanceConvert.INSTANCE.buildProcessInstanceBpmnModelView(processInstance, tasks, bpmnModel, simpleModel,
+                unfinishedTaskActivityIds, finishedTaskActivityIds, finishedSequenceFlowActivityIds, rejectTaskActivityIds,
+                userMap, deptMap);
+    }
+
+    // ========== Update 写入相关方法 ==========
+
+    @Override
+    @Transactional(rollbackFor = Exception.class)
+    public String createProcessInstance(Long userId, @Valid BpmProcessInstanceCreateReqVO createReqVO) {
+        // 获得流程定义
+        ProcessDefinition definition = processDefinitionService.getProcessDefinition(createReqVO.getProcessDefinitionId());
+        // 发起流程
+        return createProcessInstance0(userId, definition, createReqVO.getVariables(), null,
+                createReqVO.getStartUserSelectAssignees());
+    }
+
+    @Override
+    public String createProcessInstance(Long userId, @Valid BpmProcessInstanceCreateReqDTO createReqDTO) {
+        // 获得流程定义
+        ProcessDefinition definition = processDefinitionService.getActiveProcessDefinition(createReqDTO.getProcessDefinitionKey());
+        // 发起流程
+        return createProcessInstance0(userId, definition, createReqDTO.getVariables(), createReqDTO.getBusinessKey(),
+                createReqDTO.getStartUserSelectAssignees());
+    }
+
+    private String createProcessInstance0(Long userId, ProcessDefinition definition,
+                                          Map<String, Object> variables, String businessKey,
+                                          Map<String, List<Long>> startUserSelectAssignees) {
+        // 1.1 校验流程定义
+        if (definition == null) {
+            throw exception(PROCESS_DEFINITION_NOT_EXISTS);
+        }
+        if (definition.isSuspended()) {
+            throw exception(PROCESS_DEFINITION_IS_SUSPENDED);
+        }
+        BpmProcessDefinitionInfoDO processDefinitionInfo = processDefinitionService.getProcessDefinitionInfo(definition.getId());
+        if (processDefinitionInfo == null) {
+            throw exception(PROCESS_DEFINITION_NOT_EXISTS);
+        }
+        // 1.2 校验是否能够发起
+        if (!processDefinitionService.canUserStartProcessDefinition(processDefinitionInfo, userId)) {
+            throw exception(PROCESS_INSTANCE_START_USER_CAN_START);
+        }
+        // 1.3 校验发起人自选审批人
+        validateStartUserSelectAssignees(definition, startUserSelectAssignees);
+
+        // 2. 创建流程实例
+        if (variables == null) {
+            variables = new HashMap<>();
+        }
+        FlowableUtils.filterProcessInstanceFormVariable(variables); // 过滤一下，避免 ProcessInstance 系统级的变量被占用
+        variables.put(BpmnVariableConstants.PROCESS_INSTANCE_VARIABLE_START_USER_ID, userId); // 设置流程变量，发起人 ID
+        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/ServiceTask 列表
+        BpmnModel bpmnModel = processDefinitionService.getProcessDefinitionBpmnModel(definition.getId());
+        List<Task> tasks = BpmTaskCandidateStartUserSelectStrategy.getStartUserSelectTaskList(bpmnModel);
+        if (CollUtil.isEmpty(tasks)) {
+            return;
+        }
+
+        // 2. 校验发起人自选审批人的审批人和抄送人是否都配置了
+        tasks.forEach(task -> {
+            List<Long> assignees = startUserSelectAssignees != null ? startUserSelectAssignees.get(task.getId()) : null;
+            if (CollUtil.isEmpty(assignees)) {
+                throw exception(PROCESS_INSTANCE_START_USER_SELECT_ASSIGNEES_NOT_CONFIG, task.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, task.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));
+        });
+    }
+
+}
@@ -12,6 +12,7 @@ import cn.iocoder.yudao.framework.common.util.object.PageUtils;
 import cn.iocoder.yudao.framework.web.core.util.WebFrameworkUtils;
 import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.task.*;
 import cn.iocoder.yudao.module.bpm.convert.task.BpmTaskConvert;
+import cn.iocoder.yudao.module.bpm.dal.dataobject.definition.BpmFormDO;
 import cn.iocoder.yudao.module.bpm.enums.definition.*;
 import cn.iocoder.yudao.module.bpm.enums.task.BpmCommentTypeEnum;
 import cn.iocoder.yudao.module.bpm.enums.task.BpmReasonEnum;
@@ -20,6 +21,7 @@ import cn.iocoder.yudao.module.bpm.enums.task.BpmTaskStatusEnum;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnVariableConstants;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.BpmnModelUtils;
 import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.FlowableUtils;
+import cn.iocoder.yudao.module.bpm.service.definition.BpmFormService;
 import cn.iocoder.yudao.module.bpm.service.definition.BpmModelService;
 import cn.iocoder.yudao.module.bpm.service.definition.BpmProcessDefinitionService;
 import cn.iocoder.yudao.module.bpm.service.message.BpmMessageService;
@@ -91,6 +93,8 @@ public class BpmTaskServiceImpl implements BpmTaskService {
     private BpmModelService modelService;
     @Resource
     private BpmMessageService messageService;
+    @Resource
+    private BpmFormService formService;
  
     @Resource
     private AdminUserApi adminUserApi;
@@ -109,6 +113,9 @@ public class BpmTaskServiceImpl implements BpmTaskService {
         if (StrUtil.isNotBlank(pageVO.getName())) {
             taskQuery.taskNameLike("%" + pageVO.getName() + "%");
         }
+        if (StrUtil.isNotEmpty(pageVO.getCategory())) {
+            taskQuery.taskCategory(pageVO.getCategory());
+        }
         if (ArrayUtil.isNotEmpty(pageVO.getCreateTime())) {
             taskQuery.taskCreatedAfter(DateUtils.of(pageVO.getCreateTime()[0]));
             taskQuery.taskCreatedBefore(DateUtils.of(pageVO.getCreateTime()[1]));
@@ -153,7 +160,13 @@ public class BpmTaskServiceImpl implements BpmTaskService {
         BpmnModel bpmnModel = bpmProcessDefinitionService.getProcessDefinitionBpmnModel(todoTask.getProcessDefinitionId());
         Map<Integer, BpmTaskRespVO.OperationButtonSetting> buttonsSetting = BpmnModelUtils.parseButtonsSetting(
                 bpmnModel, todoTask.getTaskDefinitionKey());
-        return BpmTaskConvert.INSTANCE.buildTodoTask(todoTask, childrenTasks, buttonsSetting);
+
+        // 4. 任务表单
+        BpmFormDO taskForm = null;
+        if (StrUtil.isNotBlank(todoTask.getFormKey())){
+            taskForm = formService.getForm(NumberUtils.parseLong(todoTask.getFormKey()));
+        }
+        return BpmTaskConvert.INSTANCE.buildTodoTask(todoTask, childrenTasks, buttonsSetting, taskForm);
     }
  
     @Override
@@ -188,6 +201,9 @@ public class BpmTaskServiceImpl implements BpmTaskService {
         if (StrUtil.isNotBlank(pageVO.getName())) {
             taskQuery.taskNameLike("%" + pageVO.getName() + "%");
         }
+        if (StrUtil.isNotEmpty(pageVO.getCategory())) {
+            taskQuery.taskCategory(pageVO.getCategory());
+        }
         if (ArrayUtil.isNotEmpty(pageVO.getCreateTime())) {
             taskQuery.taskCreatedAfter(DateUtils.of(pageVO.getCreateTime()[0]));
             taskQuery.taskCreatedBefore(DateUtils.of(pageVO.getCreateTime()[1]));
@@ -441,7 +457,7 @@ public class BpmTaskServiceImpl implements BpmTaskService {
      * 判断指定用户，是否是当前任务的加签人
      *
      * @param userId 用户 Id
-     * @param task 任务
+     * @param task   任务
      * @return 是否
      */
     private boolean isAddSignUserTask(Long userId, Task task) {
@@ -669,7 +685,7 @@ public class BpmTaskServiceImpl implements BpmTaskService {
                 reqVO.getTargetTaskDefinitionKey(), task.getProcessDefinitionId());
  
         // 2. 调用 Flowable 框架的退回逻辑
-        returnTask(task, targetElement, reqVO);
+        returnTask(userId, task, targetElement, reqVO);
     }
  
     /**
@@ -701,11 +717,12 @@ public class BpmTaskServiceImpl implements BpmTaskService {
     /**
      * 执行退回逻辑
      *
+     * @param userId        用户编号
      * @param currentTask   当前退回的任务
      * @param targetElement 需要退回到的目标任务
      * @param reqVO         前端参数封装
      */
-    public void returnTask(Task currentTask, FlowElement targetElement, BpmTaskReturnReqVO reqVO) {
+    public void returnTask(Long userId, Task currentTask, FlowElement targetElement, BpmTaskReturnReqVO reqVO) {
         // 1. 获得所有需要回撤的任务 taskDefinitionKey，用于稍后的 moveActivityIdsToSingleActivityId 回撤
         // 1.1 获取所有正常进行的任务节点 Key
         List<Task> taskList = taskService.createTaskQuery().processInstanceId(currentTask.getProcessInstanceId()).list();
@@ -721,22 +738,29 @@ public class BpmTaskServiceImpl implements BpmTaskService {
             if (!returnTaskKeyList.contains(task.getTaskDefinitionKey())) {
                 return;
             }
-            // 2.1 添加评论
-            taskService.addComment(task.getId(), currentTask.getProcessInstanceId(), BpmCommentTypeEnum.RETURN.getType(),
-                    BpmCommentTypeEnum.RETURN.formatComment(reqVO.getReason()));
-            // 2.2 更新 task 状态 + 原因
-            updateTaskStatusAndReason(task.getId(), BpmTaskStatusEnum.RETURN.getStatus(), reqVO.getReason());
+
+            // 判断是否分配给自己任务，因为会签任务，一个节点会有多个任务
+            if (isAssignUserTask(userId, task)) { // 情况一：自己的任务，进行 RETURN 标记
+                // 2.1.1 添加评论
+                taskService.addComment(task.getId(), currentTask.getProcessInstanceId(), BpmCommentTypeEnum.RETURN.getType(),
+                        BpmCommentTypeEnum.RETURN.formatComment(reqVO.getReason()));
+                // 2.1.2 更新 task 状态 + 原因
+                updateTaskStatusAndReason(task.getId(), BpmTaskStatusEnum.RETURN.getStatus(), reqVO.getReason());
+            } else { // 情况二：别人的任务，进行 CANCEL 标记
+                processTaskCanceled(task.getId());
+            }
         });
  
         // 3. 设置流程变量节点驳回标记：用于驳回到节点，不执行 BpmUserTaskAssignStartUserHandlerTypeEnum 策略。导致自动通过
         runtimeService.setVariable(currentTask.getProcessInstanceId(),
                 String.format(PROCESS_INSTANCE_VARIABLE_RETURN_FLAG, reqVO.getTargetTaskDefinitionKey()), Boolean.TRUE);
-
         // 4. 执行驳回
+        // 使用 moveExecutionsToSingleActivityId 替换 moveActivityIdsToSingleActivityId 原因：
+        // 当多实例任务回退的时候有问题。相关 issue: https://github.com/flowable/flowable-engine/issues/3944
+        List<String> runExecutionIds = convertList(taskList, Task::getExecutionId);
         runtimeService.createChangeActivityStateBuilder()
                 .processInstanceId(currentTask.getProcessInstanceId())
-                .moveActivityIdsToSingleActivityId(returnTaskKeyList, // 当前要跳转的节点列表( 1 或多)
-                        reqVO.getTargetTaskDefinitionKey()) // targetKey 跳转到的节点(1)
+                .moveExecutionsToSingleActivityId(runExecutionIds, reqVO.getTargetTaskDefinitionKey())
                 .changeState();
     }
  
@@ -1021,14 +1045,22 @@ public class BpmTaskServiceImpl implements BpmTaskService {
         Integer assignEmptyHandlerType = BpmnModelUtils.parseAssignEmptyHandlerType(userTaskElement);
         TransactionSynchronizationManager.registerSynchronization(new TransactionSynchronization() {
  
+            /**
+             * 特殊情况：部分情况下，TransactionSynchronizationManager 注册 afterCommit 监听时，不会被调用，但是 afterCompletion 可以
+             * 例如说：第一个 task 就是配置【自动通过】或者【自动拒绝】时
+             * 参见 <a href="https://gitee.com/zhijiantianya/yudao-cloud/issues/IB7V7Q">issue</a> 反馈
+             */
             @Override
             public void afterCompletion(int transactionStatus) {
-                // 特殊情况：部分情况下，TransactionSynchronizationManager 注册 afterCommit 监听时，不会被调用，但是 afterCompletion 可以
-                // 例如说：第一个 task 就是配置【自动通过】或者【自动拒绝】时
-                if (ObjectUtil.notEqual(transactionStatus, TransactionSynchronization.STATUS_COMMITTED)) {
+                // 回滚情况，直接返回
+                if (ObjectUtil.equal(transactionStatus, TransactionSynchronization.STATUS_ROLLED_BACK)) {
+                    return;
+                }
+                // 特殊情况：第一个 task 【自动通过】时，第二个任务设置审批人时 transactionStatus 会为 STATUS_UNKNOWN，不知道啥原因
+                if (ObjectUtil.equal(transactionStatus, TransactionSynchronization.STATUS_UNKNOWN)
+                        && getTask(task.getId()) == null) {
                     return;
                 }
-                // TODO 芋艿：可以后续优化成 getSelf();
                 // 特殊情况一：【人工审核】审批人为空，根据配置是否要自动通过、自动拒绝
                 if (ObjectUtil.equal(approveType, BpmUserTaskApproveTypeEnum.USER.getType())) {
                     // 如果有审批人、或者拥有人，则说明不满足情况一，不自动通过、不自动拒绝
@@ -1036,19 +1068,19 @@ public class BpmTaskServiceImpl implements BpmTaskService {
                         return;
                     }
                     if (ObjectUtil.equal(assignEmptyHandlerType, BpmUserTaskAssignEmptyHandlerTypeEnum.APPROVE.getType())) {
-                        SpringUtil.getBean(BpmTaskService.class).approveTask(null, new BpmTaskApproveReqVO()
+                        getSelf().approveTask(null, new BpmTaskApproveReqVO()
                                 .setId(task.getId()).setReason(BpmReasonEnum.ASSIGN_EMPTY_APPROVE.getReason()));
                     } else if (ObjectUtil.equal(assignEmptyHandlerType, BpmUserTaskAssignEmptyHandlerTypeEnum.REJECT.getType())) {
-                        SpringUtil.getBean(BpmTaskService.class).rejectTask(null, new BpmTaskRejectReqVO()
+                        getSelf().rejectTask(null, new BpmTaskRejectReqVO()
                                 .setId(task.getId()).setReason(BpmReasonEnum.ASSIGN_EMPTY_REJECT.getReason()));
                     }
                     // 特殊情况二：【自动审核】审批类型为自动通过、不通过
                 } else {
                     if (ObjectUtil.equal(approveType, BpmUserTaskApproveTypeEnum.AUTO_APPROVE.getType())) {
-                        SpringUtil.getBean(BpmTaskService.class).approveTask(null, new BpmTaskApproveReqVO()
+                        getSelf().approveTask(null, new BpmTaskApproveReqVO()
                                 .setId(task.getId()).setReason(BpmReasonEnum.APPROVE_TYPE_AUTO_APPROVE.getReason()));
                     } else if (ObjectUtil.equal(approveType, BpmUserTaskApproveTypeEnum.AUTO_REJECT.getType())) {
-                        SpringUtil.getBean(BpmTaskService.class).rejectTask(null, new BpmTaskRejectReqVO()
+                        getSelf().rejectTask(null, new BpmTaskRejectReqVO()
                                 .setId(task.getId()).setReason(BpmReasonEnum.APPROVE_TYPE_AUTO_REJECT.getReason()));
                     }
                 }
@@ -1087,8 +1119,22 @@ public class BpmTaskServiceImpl implements BpmTaskService {
         // 发送通知。在事务提交时，批量执行操作，所以直接查询会无法查询到 ProcessInstance，所以这里是通过监听事务的提交来实现。
         TransactionSynchronizationManager.registerSynchronization(new TransactionSynchronization() {
  
+            /**
+             * 特殊情况：部分情况下，TransactionSynchronizationManager 注册 afterCommit 监听时，不会被调用，但是 afterCompletion 可以
+             * 例如说：第一个 task 就是配置【自动通过】或者【自动拒绝】时
+             * 参见 <a href="https://gitee.com/zhijiantianya/yudao-cloud/issues/IB7V7Q">issue</a> 反馈
+             */
             @Override
-            public void afterCommit() {
+            public void afterCompletion(int transactionStatus) {
+                // 回滚情况，直接返回
+                if (ObjectUtil.equal(transactionStatus, TransactionSynchronization.STATUS_ROLLED_BACK)) {
+                    return;
+                }
+                // 特殊情况：第一个 task 【自动通过】时，第二个任务设置审批人时 transactionStatus 会为 STATUS_UNKNOWN，不知道啥原因
+                if (ObjectUtil.equal(transactionStatus, TransactionSynchronization.STATUS_UNKNOWN)
+                        && getTask(task.getId()) == null) {
+                    return;
+                }
                 if (StrUtil.isEmpty(task.getAssignee())) {
                     log.error("[processTaskAssigned][taskId({}) 没有分配到负责人]", task.getId());
                     return;
 package cn.iocoder.yudao.module.erp.controller.admin.finance.vo.payment;
  
+import com.alibaba.excel.annotation.ExcelIgnoreUnannotated;
 import com.alibaba.excel.annotation.ExcelProperty;
 import io.swagger.v3.oas.annotations.media.Schema;
 import jakarta.validation.constraints.NotNull;
@@ -11,6 +12,7 @@ import java.util.List;
  
 @Schema(description = "管理后台 - ERP 付款单 Response VO")
 @Data
+@ExcelIgnoreUnannotated
 public class ErpFinancePaymentRespVO {
  
     @Schema(description = "编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "23752")
 package cn.iocoder.yudao.module.erp.controller.admin.finance.vo.receipt;
  
+import com.alibaba.excel.annotation.ExcelIgnoreUnannotated;
 import com.alibaba.excel.annotation.ExcelProperty;
 import io.swagger.v3.oas.annotations.media.Schema;
 import jakarta.validation.constraints.NotNull;
@@ -11,6 +12,7 @@ import java.util.List;
  
 @Schema(description = "管理后台 - ERP 收款单 Response VO")
 @Data
+@ExcelIgnoreUnannotated
 public class ErpFinanceReceiptRespVO {
  
     @Schema(description = "编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "23752")