diff --git a/yudao-module-bpm/yudao-module-bpm-api/src/main/java/cn/iocoder/yudao/module/bpm/enums/definition/BpmSimpleModelNodeType.java b/yudao-module-bpm/yudao-module-bpm-api/src/main/java/cn/iocoder/yudao/module/bpm/enums/definition/BpmSimpleModelNodeType.java
index 621a7a5da..36ad0e5ee 100644
--- a/yudao-module-bpm/yudao-module-bpm-api/src/main/java/cn/iocoder/yudao/module/bpm/enums/definition/BpmSimpleModelNodeType.java
+++ b/yudao-module-bpm/yudao-module-bpm-api/src/main/java/cn/iocoder/yudao/module/bpm/enums/definition/BpmSimpleModelNodeType.java
@@ -36,7 +36,9 @@ public enum BpmSimpleModelNodeType implements IntArrayValuable {
     ;
 
     public static final int[] ARRAYS = Arrays.stream(values()).mapToInt(BpmSimpleModelNodeType::getType).toArray();
-    public static final String  BPMN_USER_TASK_TYPE ="userTask";
+
+    public static final String BPMN_USER_TASK_TYPE = "userTask";
+
     private final Integer type;
     private final String bpmnType;
     private final String name;
diff --git a/yudao-module-bpm/yudao-module-bpm-api/src/main/java/cn/iocoder/yudao/module/bpm/enums/task/BpmTaskStatusEnum.java b/yudao-module-bpm/yudao-module-bpm-api/src/main/java/cn/iocoder/yudao/module/bpm/enums/task/BpmTaskStatusEnum.java
index cddb11bf2..c29efbf61 100644
--- a/yudao-module-bpm/yudao-module-bpm-api/src/main/java/cn/iocoder/yudao/module/bpm/enums/task/BpmTaskStatusEnum.java
+++ b/yudao-module-bpm/yudao-module-bpm-api/src/main/java/cn/iocoder/yudao/module/bpm/enums/task/BpmTaskStatusEnum.java
@@ -12,6 +12,7 @@ import lombok.Getter;
 @Getter
 @AllArgsConstructor
 public enum BpmTaskStatusEnum {
+
     NOT_START(-1, "未开始"),
     RUNNING(1, "审批中"),
     APPROVE(2, "审批通过"),
diff --git a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/task/vo/instance/BpmProcessInstanceProgressRespVO.java b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/task/vo/instance/BpmProcessInstanceProgressRespVO.java
index e98361551..92bfd42b9 100644
--- a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/task/vo/instance/BpmProcessInstanceProgressRespVO.java
+++ b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/task/vo/instance/BpmProcessInstanceProgressRespVO.java
@@ -15,7 +15,7 @@ public class BpmProcessInstanceProgressRespVO {
     private Integer status; // 参见 BpmProcessInstanceStatusEnum 枚举
 
     @Schema(description = "审批信息列表", requiredMode = Schema.RequiredMode.REQUIRED)
-    private List<ApproveNodeInfo> approveNodeList;
+    private List<ApproveNodeInfo> approveNodes;
 
     @Schema(description = "审批节点信息")
     @Data
@@ -56,28 +56,30 @@ public class BpmProcessInstanceProgressRespVO {
         @Schema(description = "用户昵称", requiredMode = Schema.RequiredMode.REQUIRED, example = "芋艿")
         private String nickname;
 
-        @Schema(description = "用户头像", example = "芋艿")
+        @Schema(description = "用户头像", example = "https://www.iocoder.cn/1.png")
         private String avatar;
 
     }
+
     @Schema(description = "审批任务信息")
     @Data
     public static class ApproveTaskInfo {
 
-        @Schema(description = "任务编号",  example = "1")
+        @Schema(description = "任务编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "1")
         private String id;
 
-        @Schema(description = "任务所属人")
+        @Schema(description = "任务所属人", example = "1024")
         private User ownerUser;
 
-        @Schema(description = "任务分配人")
+        @Schema(description = "任务分配人", example = "2048")
         private User assigneeUser;
 
-        @Schema(description = "任务状态", example = "1")
+        @Schema(description = "任务状态", requiredMode = Schema.RequiredMode.REQUIRED, example = "1")
         private Integer status;  // 参见 BpmTaskStatusEnum 枚举
 
         @Schema(description = "审批意见", example = "同意")
         private String reason;
+
     }
 
 }
diff --git a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/enums/BpmnModelConstants.java b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/enums/BpmnModelConstants.java
index 53e75c5d9..25772d5f3 100644
--- a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/enums/BpmnModelConstants.java
+++ b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/enums/BpmnModelConstants.java
@@ -110,7 +110,7 @@ public interface BpmnModelConstants {
     String START_EVENT_NODE_NAME = "开始";
 
     /**
-     * 发起人节点 Id
+     * 发起人节点 ID
      */
     String START_USER_NODE_ID = "StartUserNode";
 
diff --git a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmProcessInstanceServiceImpl.java b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmProcessInstanceServiceImpl.java
index ada5c2d87..c94e34bb8 100644
--- a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmProcessInstanceServiceImpl.java
+++ b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmProcessInstanceServiceImpl.java
@@ -1 +1 @@
-package cn.iocoder.yudao.module.bpm.service.task;

import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.util.ArrayUtil;
import cn.hutool.core.util.NumberUtil;
import cn.hutool.core.util.StrUtil;
import cn.iocoder.yudao.framework.common.pojo.PageResult;
import cn.iocoder.yudao.framework.common.util.collection.CollectionUtils;
import cn.iocoder.yudao.framework.common.util.date.DateUtils;
import cn.iocoder.yudao.framework.common.util.json.JsonUtils;
import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
import cn.iocoder.yudao.framework.common.util.object.PageUtils;
import cn.iocoder.yudao.module.bpm.api.task.dto.BpmProcessInstanceCreateReqDTO;
import cn.iocoder.yudao.module.bpm.controller.admin.definition.vo.model.simple.BpmSimpleModelNodeVO;
import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.*;
import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.BpmProcessInstanceProgressRespVO.ApproveTaskInfo;
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.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.framework.flowable.core.candidate.BpmTaskCandidateInvoker;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateStrategy;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.BpmTaskCandidateStartUserSelectStrategy;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnVariableConstants;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.event.BpmProcessInstanceEventPublisher;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.BpmnModelUtils;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.FlowableUtils;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.SimpleModelUtils;
import cn.iocoder.yudao.module.bpm.service.definition.BpmProcessDefinitionService;
import cn.iocoder.yudao.module.bpm.service.message.BpmMessageService;
import cn.iocoder.yudao.module.bpm.service.task.bo.AlreadyRunApproveNodeRespBO;
import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
import jakarta.annotation.Resource;
import jakarta.validation.Valid;
import lombok.extern.slf4j.Slf4j;
import org.flowable.bpmn.model.BpmnModel;
import org.flowable.bpmn.model.UserTask;
import org.flowable.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.module.bpm.controller.admin.task.vo.instance.BpmProcessInstanceProgressRespVO.ApproveNodeInfo;
import static cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.BpmProcessInstanceProgressRespVO.User;
import static cn.iocoder.yudao.module.bpm.enums.ErrorCodeConstants.*;
import static cn.iocoder.yudao.module.bpm.enums.definition.BpmSimpleModelNodeType.*;
import static cn.iocoder.yudao.module.bpm.enums.definition.BpmUserTaskApproveTypeEnum.USER;
import static cn.iocoder.yudao.module.bpm.enums.task.BpmTaskStatusEnum.APPROVE;
import static cn.iocoder.yudao.module.bpm.enums.task.BpmTaskStatusEnum.NOT_START;
import static cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnModelConstants.START_USER_NODE_ID;

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

    @Resource
    private RuntimeService runtimeService;
    @Resource
    private HistoryService historyService;
    @Resource
    private BpmActivityService activityService;
    @Resource
    private BpmProcessDefinitionService processDefinitionService;
    @Resource
    @Lazy // 避免循环依赖
    private BpmTaskService taskService;
    @Resource
    private BpmMessageService messageService;
    @Resource
    private BpmTaskCandidateInvoker bpmTaskCandidateInvoker;

    @Resource
    private AdminUserApi adminUserApi;

    @Resource
    private BpmProcessInstanceEventPublisher processInstanceEventPublisher;

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

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

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

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

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

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

    @Override
    public Map<String, String> getProcessInstanceFormFieldsPermission(BpmProcessInstanceFormFieldsPermissionReqVO reqVO) {
        HistoricProcessInstance processInstance = getHistoricProcessInstance(reqVO.getId());
        // 1.1 查询流程实例. 不存在返回 null
        if (processInstance == null) {
            return null;
        }
        // 1.2 通过流程活动编号
        String activityId = reqVO.getActivityId();
        if (StrUtil.isEmpty(activityId) && StrUtil.isNotEmpty(reqVO.getTaskId())) { // 流程活动 Id 为空。从流程任务中获取流程活动 Id
            activityId = Optional.ofNullable(taskService.getHistoricTask(reqVO.getTaskId()))
                    .map(HistoricTaskInstance::getTaskDefinitionKey).orElse(null);
        }
        if (StrUtil.isEmpty(activityId)) {
            return null;
        }

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

    @Override
    public BpmProcessInstanceProgressRespVO getProcessInstanceProgress(String id) {
        // 1. 获取流程实例信息
        HistoricProcessInstance processInstance = getHistoricProcessInstance(id);
        if (processInstance == null) {
            return null;
        }
        // 2. 获取流程实例状态
        Integer processInstanceStatus = FlowableUtils.getProcessInstanceStatus(processInstance);
        BpmProcessInstanceProgressRespVO respVO = new BpmProcessInstanceProgressRespVO()
                .setStatus(processInstanceStatus);

        // 3. 构建已运行节点的审批信息
        List<HistoricActivityInstance> historicActivityList = activityService.getActivityListByProcessInstanceId(
                processInstance.getId());
        AlreadyRunApproveNodeRespBO respBO = buildAlreadyRunApproveNodes(processInstance.getId(), historicActivityList);

        if (BpmProcessInstanceStatusEnum.isProcessEndStatus(processInstanceStatus)) { // 流程已经结束
            respVO.setApproveNodeList(respBO.getApproveNodeList());
        } else {
            // 区分 BPMN 设计器 和 SIMPLE 设计器
            BpmProcessDefinitionInfoDO processDefinitionInfo = processDefinitionService.getProcessDefinitionInfo(
                    processInstance.getProcessDefinitionId());
            if (Objects.equals(BpmModelTypeEnum.SIMPLE.getType(), processDefinitionInfo.getModelType())) {
                // 4.1 仿钉钉流程设计器， 构建未运行节点的审批信息
                List<ApproveNodeInfo> approveNodeList = respBO.getApproveNodeList();
                BpmSimpleModelNodeVO simpleModel = JsonUtils.parseObject(processDefinitionInfo.getSimpleModel(), BpmSimpleModelNodeVO.class);
                List<ApproveNodeInfo> notRunApproveNodes = new ArrayList<>();
                traverseSimpleModelNodeToBuildNotRunApproveNodes(processInstance.getId(), simpleModel, respBO.getRunNodeIds(), notRunApproveNodes);
                approveNodeList.addAll(notRunApproveNodes);
                respVO.setApproveNodeList(approveNodeList);
            } else if (Objects.equals(BpmModelTypeEnum.BPMN.getType(), processDefinitionInfo.getModelType())) {
                // TODO Bpmn 设计器， 构建未运行节点的审批信息
                respVO.setApproveNodeList(respBO.getApproveNodeList());
            }
        }

        return respVO;
    }

    /**
     *  遍历 SIMPLE 设计器模型 构建未运行节点的审批信息
     *
     * @param processInstanceId 流程实例 Id
     * @param simpleModelNode  SIMPLE 设计器模型
     * @param runNodeIds 已经运行节点的 Ids
     * @param approveNodeList 未运行节点的审批信息列表
     */
    private void traverseSimpleModelNodeToBuildNotRunApproveNodes(String processInstanceId, BpmSimpleModelNodeVO simpleModelNode
            , Set<String> runNodeIds, List<ApproveNodeInfo> approveNodeList) {
        if (!SimpleModelUtils.isValidNode(simpleModelNode)) {
            return;
        }
        buildNotRunApproveNodes(processInstanceId, simpleModelNode, runNodeIds, approveNodeList);
        // 如果有子节点递归遍历子节点
        traverseSimpleModelNodeToBuildNotRunApproveNodes(processInstanceId, simpleModelNode.getChildNode(), runNodeIds, approveNodeList);
    }

    private void buildNotRunApproveNodes(String processInstanceId, BpmSimpleModelNodeVO node, Set<String> runNodeIds, List<ApproveNodeInfo> approveNodeList) {
        if (!runNodeIds.contains(node.getId())) {
            // 节点未运行。需要进行预测
            // 1. 对需要人工审批的审批节点。进行预测
            if (APPROVE_NODE.getType().equals(node.getType()) && USER.getType().equals(node.getApproveType())) {
                ApproveNodeInfo nodeProgress = new ApproveNodeInfo();
                nodeProgress.setNodeType(node.getType());
                nodeProgress.setName(node.getName());
                nodeProgress.setStatus(NOT_START.getStatus());
                nodeProgress.setCandidateUserList(getNotRunTaskCandidateUserList(processInstanceId, node.getCandidateStrategy(), node.getCandidateParam()));
                approveNodeList.add(nodeProgress);
            }
            // 2. 对分支节点进行预测
            if (BpmSimpleModelNodeType.isBranchNode(node.getType())) {
                //  并行分支。不用预测条件。所有分支都需要遍历
                if (PARALLEL_BRANCH_NODE.getType().equals(node.getType())) {
                    node.getConditionNodes().forEach(conditionNode ->
                            traverseSimpleModelNodeToBuildNotRunApproveNodes(processInstanceId, conditionNode.getChildNode()
                                    , runNodeIds, approveNodeList)
                    );
                }
                // TODO 条件分支如何预测待研究
            }
            // 3. 结束节点
            if (END_NODE.getType().equals(node.getType())) {
                ApproveNodeInfo nodeProgress = new ApproveNodeInfo();
                nodeProgress.setNodeType(node.getType());
                nodeProgress.setName(node.getName());
                nodeProgress.setStatus(NOT_START.getStatus());
                approveNodeList.add(nodeProgress);
            }

        } else {
            // 节点已经运行。如果是分支节点。需要检查分支节点的运行情况
            if (BpmSimpleModelNodeType.isBranchNode(node.getType()) && ArrayUtil.isNotEmpty(node.getConditionNodes())) {
                node.getConditionNodes().forEach(conditionNode -> {
                    // 只有运行的条件，才需要遍历
                    if (runNodeIds.contains(conditionNode.getId())) {
                        traverseSimpleModelNodeToBuildNotRunApproveNodes(processInstanceId, conditionNode.getChildNode()
                                , runNodeIds, approveNodeList);
                    }
                });
            }
        }
    }

    /**
     * 从已经运行活动节点构建的审批信息列表
     *
     * @param processInstanceId  流程实例 Id
     * @param historicActivityList 已经运行活动
     */
    private AlreadyRunApproveNodeRespBO buildAlreadyRunApproveNodes(String processInstanceId,
                                                                    List<HistoricActivityInstance> historicActivityList) {
        // 待处理活动  只有 "userTask"  和 "endEvent"。 活动需要处理
        List<HistoricActivityInstance> pendingActivityNodes = new ArrayList<>();
        // 运行的节点 activityId。
        Set<String> runNodeIds = new HashSet<>();
        // 1. 遍历所有已运行和运行中的活动。 获取待处理的活动
        historicActivityList.forEach(activity -> {
            runNodeIds.add(activity.getActivityId());
            if (BpmSimpleModelNodeType.isRecordNode(activity.getActivityType())) {
                pendingActivityNodes.add(activity);
            }
        });
        // 2.1 获取已运行和运行中的任务
        List<HistoricTaskInstance> taskList = taskService.getTaskListByProcessInstanceId(processInstanceId);
        Map<String, HistoricTaskInstance> taskMap = CollectionUtils.convertMap(taskList, HistoricTaskInstance::getId);
        // 2.2 获取加签的任务
        Map<String, List<HistoricTaskInstance>> addSignTaskMap = CollectionUtils.convertMultiMap(
                CollectionUtils.filterList(taskList, task -> StrUtil.isNotEmpty(task.getParentTaskId())), HistoricTaskInstance::getParentTaskId);
        // 3. 转换为节点审批信息
        List<ApproveNodeInfo> nodeProgressList = CollectionUtils.convertList(pendingActivityNodes, activity -> {
            ApproveNodeInfo nodeProgress = new ApproveNodeInfo().setName(activity.getActivityName())
                    .setId(activity.getId())
                    .setStartTime(DateUtils.of(activity.getStartTime()))
                    .setEndTime(DateUtils.of(activity.getEndTime()));
            if (BPMN_USER_TASK_TYPE.equals(activity.getActivityType())) { // 用户任务
                if (START_USER_NODE_ID.equals(activity.getActivityId())) {
                    nodeProgress.setNodeType(START_USER_NODE.getType());
                } else {
                    nodeProgress.setNodeType(APPROVE_NODE.getType());
                }
                HistoricTaskInstance task = taskMap.get(activity.getTaskId());
                nodeProgress.setStatus(FlowableUtils.getTaskStatus(task));
                ApproveTaskInfo approveTask = convertApproveTaskInfo(task);
                List<ApproveTaskInfo> approveTasks = CollUtil.newArrayList(approveTask);
                // 处理加签任务
                List<HistoricTaskInstance> addSignTasks = addSignTaskMap.get(activity.getTaskId());
                if (CollUtil.isNotEmpty(addSignTasks)) {
                    approveTasks.addAll(CollectionUtils.convertList(addSignTasks, this::convertApproveTaskInfo));
                }
                nodeProgress.setTasks(approveTasks);
            } else if (END_NODE.getBpmnType().equals(activity.getActivityType())) {
                nodeProgress.setNodeType(APPROVE_NODE.getType());
                nodeProgress.setStatus(APPROVE.getStatus());
            }
            return nodeProgress;
        });
        return new AlreadyRunApproveNodeRespBO()
                .setApproveNodeList(nodeProgressList)
                .setRunNodeIds(runNodeIds);

    }

    private ApproveTaskInfo convertApproveTaskInfo(HistoricTaskInstance task) {
        if (task == null) {
            return null;
        }
        ApproveTaskInfo approveTask = BeanUtils.toBean(task, ApproveTaskInfo.class);
        approveTask.setStatus(FlowableUtils.getTaskStatus(task));
        approveTask.setReason(FlowableUtils.getTaskReason(task));
        if (StrUtil.isNotEmpty(task.getAssignee())) {
            AdminUserRespDTO adminUserResp = adminUserApi.getUser(NumberUtil.parseLong(task.getAssignee()));
            approveTask.setAssigneeUser(BeanUtils.toBean(adminUserResp, User.class));
        }
        if (StrUtil.isNotEmpty(task.getOwner())) {
            AdminUserRespDTO adminUserResp = adminUserApi.getUser(NumberUtil.parseLong(task.getOwner()));
            approveTask.setOwnerUser(BeanUtils.toBean(adminUserResp, User.class));
        }
        return approveTask;
    }

    private List<User> getNotRunTaskCandidateUserList(String processInstanceId, Integer candidateStrategy,
                                                      String candidateParam) {
        BpmTaskCandidateStrategy taskCandidateStrategy = bpmTaskCandidateInvoker.getCandidateStrategy(candidateStrategy);
        Set<Long> userIds = taskCandidateStrategy.calculateUsers(processInstanceId, candidateParam);
        List<AdminUserRespDTO> userList = adminUserApi.getUserList(userIds);
        return CollectionUtils.convertList(userList, item -> BeanUtils.toBean(item, User.class));
    }

    // ========== 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);
        }
        // 1.2 校验发起人自选审批人
        validateStartUserSelectAssignees(definition, startUserSelectAssignees);

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.util.ArrayUtil;
import cn.hutool.core.util.NumberUtil;
import cn.hutool.core.util.StrUtil;
import cn.iocoder.yudao.framework.common.pojo.PageResult;
import cn.iocoder.yudao.framework.common.util.collection.CollectionUtils;
import cn.iocoder.yudao.framework.common.util.date.DateUtils;
import cn.iocoder.yudao.framework.common.util.json.JsonUtils;
import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
import cn.iocoder.yudao.framework.common.util.object.PageUtils;
import cn.iocoder.yudao.module.bpm.api.task.dto.BpmProcessInstanceCreateReqDTO;
import cn.iocoder.yudao.module.bpm.controller.admin.definition.vo.model.simple.BpmSimpleModelNodeVO;
import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.*;
import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.BpmProcessInstanceProgressRespVO.ApproveTaskInfo;
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.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.framework.flowable.core.candidate.BpmTaskCandidateInvoker;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.BpmTaskCandidateStrategy;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.candidate.strategy.BpmTaskCandidateStartUserSelectStrategy;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnVariableConstants;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.event.BpmProcessInstanceEventPublisher;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.BpmnModelUtils;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.FlowableUtils;
import cn.iocoder.yudao.module.bpm.framework.flowable.core.util.SimpleModelUtils;
import cn.iocoder.yudao.module.bpm.service.definition.BpmProcessDefinitionService;
import cn.iocoder.yudao.module.bpm.service.message.BpmMessageService;
import cn.iocoder.yudao.module.bpm.service.task.bo.AlreadyRunApproveNodeRespBO;
import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
import jakarta.annotation.Resource;
import jakarta.validation.Valid;
import lombok.extern.slf4j.Slf4j;
import org.flowable.bpmn.model.BpmnModel;
import org.flowable.bpmn.model.UserTask;
import org.flowable.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.BpmProcessInstanceProgressRespVO.ApproveNodeInfo;
import static cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.BpmProcessInstanceProgressRespVO.User;
import static cn.iocoder.yudao.module.bpm.enums.ErrorCodeConstants.*;
import static cn.iocoder.yudao.module.bpm.enums.definition.BpmSimpleModelNodeType.*;
import static cn.iocoder.yudao.module.bpm.enums.definition.BpmUserTaskApproveTypeEnum.USER;
import static cn.iocoder.yudao.module.bpm.enums.task.BpmTaskStatusEnum.APPROVE;
import static cn.iocoder.yudao.module.bpm.enums.task.BpmTaskStatusEnum.NOT_START;
import static cn.iocoder.yudao.module.bpm.framework.flowable.core.enums.BpmnModelConstants.START_USER_NODE_ID;

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

    @Resource
    private RuntimeService runtimeService;
    @Resource
    private HistoryService historyService;
    @Resource
    private BpmActivityService activityService;
    @Resource
    private BpmProcessDefinitionService processDefinitionService;
    @Resource
    @Lazy // 避免循环依赖
    private BpmTaskService taskService;
    @Resource
    private BpmMessageService messageService;
    @Resource
    private BpmTaskCandidateInvoker bpmTaskCandidateInvoker;

    @Resource
    private AdminUserApi adminUserApi;

    @Resource
    private BpmProcessInstanceEventPublisher processInstanceEventPublisher;

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

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

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

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

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

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

    @Override
    public Map<String, String> getProcessInstanceFormFieldsPermission(BpmProcessInstanceFormFieldsPermissionReqVO reqVO) {
        HistoricProcessInstance processInstance = getHistoricProcessInstance(reqVO.getId());
        // 1.1 查询流程实例. 不存在返回 null
        if (processInstance == null) {
            return null;
        }
        // 1.2 通过流程活动编号
        String activityId = reqVO.getActivityId();
        if (StrUtil.isEmpty(activityId) && StrUtil.isNotEmpty(reqVO.getTaskId())) { // 流程活动 Id 为空。从流程任务中获取流程活动 Id
            activityId = Optional.ofNullable(taskService.getHistoricTask(reqVO.getTaskId()))
                    .map(HistoricTaskInstance::getTaskDefinitionKey).orElse(null);
        }
        if (StrUtil.isEmpty(activityId)) {
            return null;
        }

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

    @Override
    public BpmProcessInstanceProgressRespVO getProcessInstanceProgress(String id) {
        // 1.1 获取流程实例信息
        HistoricProcessInstance processInstance = getHistoricProcessInstance(id);
        if (processInstance == null) {
            return null;
        }
        // 1.2 获取流程实例状态
        Integer processInstanceStatus = FlowableUtils.getProcessInstanceStatus(processInstance);
        BpmProcessInstanceProgressRespVO respVO = new BpmProcessInstanceProgressRespVO()
                .setStatus(processInstanceStatus);

        // 2. 构建已运行节点的审批信息
        List<HistoricActivityInstance> historicActivityList = activityService.getActivityListByProcessInstanceId(processInstance.getId());
        AlreadyRunApproveNodeRespBO respBO = buildAlreadyRunApproveNodes(processInstance.getId(), historicActivityList);
        respVO.setApproveNodes(respBO.getApproveNodes());

        // 3. 流程已经结束
        if (BpmProcessInstanceStatusEnum.isProcessEndStatus(processInstanceStatus)) {
            return respVO;
        }

        // 4. 流程未结束，预测未运行节点的审批信息。需要区分 BPMN 设计器 和 SIMPLE 设计器
        BpmProcessDefinitionInfoDO processDefinitionInfo = processDefinitionService.getProcessDefinitionInfo(
                processInstance.getProcessDefinitionId());
        // 4.1 仿钉钉流程设计器
        if (Objects.equals(BpmModelTypeEnum.SIMPLE.getType(), processDefinitionInfo.getModelType())) {
            BpmSimpleModelNodeVO simpleModel = JsonUtils.parseObject(processDefinitionInfo.getSimpleModel(), BpmSimpleModelNodeVO.class);
            List<ApproveNodeInfo> notRunApproveNodes = new ArrayList<>();
            traverseSimpleModelNodeToBuildNotRunApproveNodes(processInstance.getId(), simpleModel, respBO.getRunNodeIds(), notRunApproveNodes);
            respVO.getApproveNodes().addAll(notRunApproveNodes);
            // TODO @jason：会不会有极端的情况：对于依次审批来说，它是已经 running，但是当前节点也要计算其它审批人？
        // 4.2 BPMN 流程设计器
        } else if (Objects.equals(BpmModelTypeEnum.BPMN.getType(), processDefinitionInfo.getModelType())) {
            // TODO Bpmn 设计器，构建未运行节点的审批信息；未完全实现
        }
        return respVO;
    }

    /**
     *  遍历 SIMPLE 设计器模型 构建未运行节点的审批信息
     *
     * @param processInstanceId 流程实例 Id
     * @param simpleModelNode  SIMPLE 设计器模型
     * @param runNodeIds 已经运行节点的 Ids
     * @param approveNodeList 未运行节点的审批信息列表
     */
    private void traverseSimpleModelNodeToBuildNotRunApproveNodes(String processInstanceId,
                                                                  BpmSimpleModelNodeVO simpleModelNode,
                                                                  Set<String> runNodeIds,
                                                                  List<ApproveNodeInfo> approveNodeList) {
        if (!SimpleModelUtils.isValidNode(simpleModelNode)) {
            return;
        }
        buildNotRunApproveNodes(processInstanceId, simpleModelNode, runNodeIds, approveNodeList);
        // 如果有子节点递归遍历子节点
        traverseSimpleModelNodeToBuildNotRunApproveNodes(processInstanceId, simpleModelNode.getChildNode(), runNodeIds, approveNodeList);
    }

    private void buildNotRunApproveNodes(String processInstanceId, BpmSimpleModelNodeVO node, Set<String> runNodeIds, List<ApproveNodeInfo> approveNodeList) {
        if (!runNodeIds.contains(node.getId())) {
            // 节点未运行。需要进行预测
            // 1. 对需要人工审批的审批节点。进行预测
            if (APPROVE_NODE.getType().equals(node.getType()) && USER.getType().equals(node.getApproveType())) {
                ApproveNodeInfo nodeProgress = new ApproveNodeInfo();
                nodeProgress.setNodeType(node.getType());
                nodeProgress.setName(node.getName());
                nodeProgress.setStatus(NOT_START.getStatus());
                nodeProgress.setCandidateUserList(getNotRunTaskCandidateUserList(processInstanceId, node.getCandidateStrategy(), node.getCandidateParam()));
                approveNodeList.add(nodeProgress);
            }
            // 2. 对分支节点进行预测
            if (BpmSimpleModelNodeType.isBranchNode(node.getType())) {
                //  并行分支。不用预测条件。所有分支都需要遍历
                if (PARALLEL_BRANCH_NODE.getType().equals(node.getType())) {
                    node.getConditionNodes().forEach(conditionNode ->
                            traverseSimpleModelNodeToBuildNotRunApproveNodes(processInstanceId, conditionNode.getChildNode()
                                    , runNodeIds, approveNodeList)
                    );
                }
                // TODO 条件分支如何预测待研究
            }
            // 3. 结束节点
            if (END_NODE.getType().equals(node.getType())) {
                ApproveNodeInfo nodeProgress = new ApproveNodeInfo();
                nodeProgress.setNodeType(node.getType());
                nodeProgress.setName(node.getName());
                nodeProgress.setStatus(NOT_START.getStatus());
                approveNodeList.add(nodeProgress);
            }

        } else {
            // 节点已经运行。如果是分支节点。需要检查分支节点的运行情况
            if (BpmSimpleModelNodeType.isBranchNode(node.getType()) && ArrayUtil.isNotEmpty(node.getConditionNodes())) {
                node.getConditionNodes().forEach(conditionNode -> {
                    // 只有运行的条件，才需要遍历
                    if (runNodeIds.contains(conditionNode.getId())) {
                        traverseSimpleModelNodeToBuildNotRunApproveNodes(processInstanceId, conditionNode.getChildNode()
                                , runNodeIds, approveNodeList);
                    }
                });
            }
        }
    }

    /**
     * 从已经运行活动节点构建的审批信息列表
     *
     * @param processInstanceId  流程实例 Id
     * @param historicActivityList 已经运行活动
     */
    private AlreadyRunApproveNodeRespBO buildAlreadyRunApproveNodes(String processInstanceId,
                                                                    List<HistoricActivityInstance> historicActivityList) {
        // 1.1 待处理活动：只有 "userTask" 和 "endEvent" 需要处理
        // TODO @jason：这种，其实可以使用 CollectionUtils.filterList() 处理；这样的话，相比下面 311 到 318 左右的处理，会读起来更简洁。性能也没啥差别。
        List<HistoricActivityInstance> pendingActivityNodes = new ArrayList<>();
        // 1.2 运行的节点 activityId
        // TODO @jason：这种，其实使用 CollectionUtils.convertSet 处理
        Set<String> runNodeIds = new HashSet<>();
        // 遍历所有已运行和运行中的活动。 获取待处理的活动
        historicActivityList.forEach(activity -> {
            runNodeIds.add(activity.getActivityId());
            if (BpmSimpleModelNodeType.isRecordNode(activity.getActivityType())) {
                pendingActivityNodes.add(activity);
            }
        });

        // 2.1 获取已运行和运行中的任务
        List<HistoricTaskInstance> taskList = taskService.getTaskListByProcessInstanceId(processInstanceId);
        Map<String, HistoricTaskInstance> taskMap = convertMap(taskList, HistoricTaskInstance::getId);
        // 2.2 获取加签的任务
        Map<String, List<HistoricTaskInstance>> addSignTaskMap = convertMultiMap(
                filterList(taskList, task -> StrUtil.isNotEmpty(task.getParentTaskId())), HistoricTaskInstance::getParentTaskId);

        // 3. 转换为节点审批信息
        List<ApproveNodeInfo> nodeProgressList = CollectionUtils.convertList(pendingActivityNodes, activity -> {
            ApproveNodeInfo nodeProgress = new ApproveNodeInfo().setId(activity.getId()).setName(activity.getActivityName())
                    .setStartTime(DateUtils.of(activity.getStartTime())).setEndTime(DateUtils.of(activity.getEndTime()));
            if (BPMN_USER_TASK_TYPE.equals(activity.getActivityType())) { // 用户任务
                // nodeType
                nodeProgress.setNodeType(START_USER_NODE_ID.equals(activity.getActivityId()) ?
                        START_USER_NODE.getType() : APPROVE_NODE.getType());
                // status
                HistoricTaskInstance task = taskMap.get(activity.getTaskId());
                nodeProgress.setStatus(FlowableUtils.getTaskStatus(task));
                // tasks
                // TODO @jason：建议先构建 List<ApproveTaskInfo>，再一次性 convert。减少一些 adminApi 的调用哈
                ApproveTaskInfo approveTask = convertApproveTaskInfo(task);
                List<ApproveTaskInfo> approveTasks = CollUtil.newArrayList(approveTask);
                List<HistoricTaskInstance> addSignTasks = addSignTaskMap.get(activity.getTaskId());
                if (CollUtil.isNotEmpty(addSignTasks)) { // 处理加签任务
                    approveTasks.addAll(CollectionUtils.convertList(addSignTasks, this::convertApproveTaskInfo));
                }
                nodeProgress.setTasks(approveTasks);
            } else if (END_NODE.getBpmnType().equals(activity.getActivityType())) {
                nodeProgress.setNodeType(APPROVE_NODE.getType());
                nodeProgress.setStatus(APPROVE.getStatus());
            }
            return nodeProgress;
        });
        return new AlreadyRunApproveNodeRespBO().setApproveNodes(nodeProgressList).setRunNodeIds(runNodeIds);
    }

    private ApproveTaskInfo convertApproveTaskInfo(HistoricTaskInstance task) {
        if (task == null) {
            return null;
        }
        ApproveTaskInfo approveTask = BeanUtils.toBean(task, ApproveTaskInfo.class);
        approveTask.setStatus(FlowableUtils.getTaskStatus(task)).setReason(FlowableUtils.getTaskReason(task));
        // TODO @jason：assignee 和 owner 建议批量读取
        if (StrUtil.isNotEmpty(task.getAssignee())) {
            AdminUserRespDTO adminUserResp = adminUserApi.getUser(NumberUtil.parseLong(task.getAssignee()));
            approveTask.setAssigneeUser(BeanUtils.toBean(adminUserResp, User.class));
        }
        if (StrUtil.isNotEmpty(task.getOwner())) {
            AdminUserRespDTO adminUserResp = adminUserApi.getUser(NumberUtil.parseLong(task.getOwner()));
            approveTask.setOwnerUser(BeanUtils.toBean(adminUserResp, User.class));
        }
        return approveTask;
    }

    private List<User> getNotRunTaskCandidateUserList(String processInstanceId, Integer candidateStrategy, String candidateParam) {
        BpmTaskCandidateStrategy taskCandidateStrategy = bpmTaskCandidateInvoker.getCandidateStrategy(candidateStrategy);
        Set<Long> userIds = taskCandidateStrategy.calculateUsers(processInstanceId, candidateParam);
        List<AdminUserRespDTO> userList = adminUserApi.getUserList(userIds);
        return CollectionUtils.convertList(userList, item -> BeanUtils.toBean(item, User.class));
    }

    // ========== 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);
        }
        // 1.2 校验发起人自选审批人
        validateStartUserSelectAssignees(definition, startUserSelectAssignees);

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

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

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

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

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

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

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

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

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

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

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

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

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

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

}
\ No newline at end of file
diff --git a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/bo/AlreadyRunApproveNodeRespBO.java b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/bo/AlreadyRunApproveNodeRespBO.java
index ddffec22c..f9f50effd 100644
--- a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/bo/AlreadyRunApproveNodeRespBO.java
+++ b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/bo/AlreadyRunApproveNodeRespBO.java
@@ -8,13 +8,21 @@ import java.util.Set;
 import static cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.BpmProcessInstanceProgressRespVO.ApproveNodeInfo;
 
 /**
+ * 已经进行中的审批节点 Response BO
+ *
  * @author jason
  */
 @Data
 public class AlreadyRunApproveNodeRespBO {
 
-    private List<ApproveNodeInfo> approveNodeList;
+    /**
+     * 审批节点信息数组
+     */
+    private List<ApproveNodeInfo> approveNodes;
 
+    /**
+     * 进行中的节点 ID 数组
+     */
     private Set<String> runNodeIds;
 
 }