基于若依的ruoyi-nbcio流程管理系统自定义业务撤回功能的修复

@Override
    @Transactional(rollbackFor = Exception.class)
    public void revokeProcess(WfTaskBo taskBo) {
        String procInsId = taskBo.getProcInsId();
        String taskId = taskBo.getTaskId();
        // 校验流程是否结束
        ProcessInstance processInstance = runtimeService.createProcessInstanceQuery()
            .processInstanceId(procInsId)
            .active()
            .singleResult();
        if(ObjectUtil.isNull(processInstance)) {
            throw new RuntimeException("流程已结束或已挂起，无法执行撤回操作");
        }
        // 获取待撤回任务实例
        HistoricTaskInstance currTaskIns = historyService.createHistoricTaskInstanceQuery()
            .taskId(taskId)
            .taskAssignee(TaskUtils.getUserName())
            .singleResult();
        if (ObjectUtil.isNull(currTaskIns)) {
            throw new RuntimeException("当前任务不存在，无法执行撤回操作");
        }
        // 获取 bpmn 模型
        BpmnModel bpmnModel = repositoryService.getBpmnModel(currTaskIns.getProcessDefinitionId());
        UserTask currUserTask = ModelUtils.getUserTaskByKey(bpmnModel, currTaskIns.getTaskDefinitionKey());
        // 查找下一级用户任务列表
        List<UserTask> nextUserTaskList = ModelUtils.findNextUserTasks(currUserTask);
        List<String> nextUserTaskKeys = nextUserTaskList.stream().map(UserTask::getId).collect(Collectors.toList());
        // 获取当前节点之后已完成的流程历史节点
        List<HistoricTaskInstance> finishedTaskInsList = historyService.createHistoricTaskInstanceQuery()
            .processInstanceId(procInsId)
            .taskCreatedAfter(currTaskIns.getEndTime())
            .finished()
            .list();
        for (HistoricTaskInstance finishedTaskInstance : finishedTaskInsList) {
            // 检查已完成流程历史节点是否存在下一级中
            if (CollUtil.contains(nextUserTaskKeys, finishedTaskInstance.getTaskDefinitionKey())) {
                throw new RuntimeException("下一流程已处理，无法执行撤回操作");
            }
        }
        // 获取所有激活的任务节点，找到需要撤回的任务
        List<Task> activateTaskList = taskService.createTaskQuery().processInstanceId(procInsId).list();
        List<String> revokeExecutionIds = new ArrayList<>();
        for (Task task : activateTaskList) {
            // 检查激活的任务节点是否存在下一级中，如果存在，则加入到需要撤回的节点
            if (CollUtil.contains(nextUserTaskKeys, task.getTaskDefinitionKey())) {
                // 添加撤回审批信息
                taskService.setAssignee(task.getId(), TaskUtils.getUserName());
                taskService.addComment(task.getId(), task.getProcessInstanceId(), FlowComment.REVOKE.getType(), LoginHelper.getNickName() + "撤回流程审批");
                revokeExecutionIds.add(task.getExecutionId());
            }
        }
        try {
            runtimeService.createChangeActivityStateBuilder()
                .processInstanceId(procInsId)
                .moveExecutionsToSingleActivityId(revokeExecutionIds, currTaskIns.getTaskDefinitionKey()).changeState();
            String dataId = taskBo.getDataId();
            if(StringUtils.isNotEmpty(dataId)) {
              //当前任务信息
                List<Task> listtask = taskService.createTaskQuery().processInstanceId(procInsId).taskAssignee(TaskUtils.getUserName()).list();
              WfMyBusiness business = wfMyBusinessService.getByDataId(dataId);
              //更新自定义业务任务关联表与流程历史表，以便可以重新发起流程。
              if (business != null) {
                if (listtask != null && listtask.size()>0) {
                  business.setActStatus(ActStatus.revoke);
                    business.setTodoUsers(listtask.get(0).getAssignee());
                }
                else {
                  business.setActStatus(ActStatus.revoke);
                  business.setTodoUsers("");
                  business.setDoneUsers("");
                  business.setProposer("");
                  business.setTaskName("");
                  business.setTaskId("");
                  business.setTaskNameId("");
                }
                
                  wfMyBusinessService.updateById(business);
                } 
            }
        } catch (FlowableObjectNotFoundException e) {
            throw new RuntimeException("未找到流程实例，流程可能已发生变化");
        } catch (FlowableException e) {
            throw new RuntimeException("执行撤回操作失败");
        }
    }