Activiti6.0中审批不通过时回退到上一个节点/指定节点
在当前做的这个审批流中，需要增加一个审批不通过时回退节点的功能，因为当前系统需求还没有特别明确这部分，所以我就先写了以下两种回退情况：
1.回退到上一个节点
java
/**
* 撤回到上一个节点
* @param processInstanceId
* @param nowUserId
*/
@Override
@Transactional
public void revoke(String processInstanceId, String nowUserId) {
//获取待执行的任务节点
Task task = taskService.createTaskQuery().processInstanceId(processInstanceId).singleResult();
if(task == null){
// throw new Exception("sorry,the process is not started or has finished, cannot be withdrawn");
System.out.println("sorry,the process is not started or has finished, cannot be withdrawn");
}
//通过processInstanceId查询历史节点
List<HistoricTaskInstance> htiList = historyService.createHistoricTaskInstanceQuery()
.processInstanceId(processInstanceId)
.orderByTaskCreateTime()
.asc()
.list();
String myTaskId = null;
HistoricTaskInstance myTask = null;
//找到当前运行的节点
HistoricProcessInstance processInstance = historyService.createHistoricProcessInstanceQuery().processInstanceId(processInstanceId).singleResult();
ProcInstance procInstance = procInstanceMapper.selectById(processInstance.getBusinessKey()).get(0);
SysUser startUser = sysUserService.selectUserById(procInstance.getUserId());
List<SysUser> currUsers = findCurrUsers(task, startUser);
System.out.println("----------- =-= -------currUser-----------------------"+currUsers.get(0).getUserId());
System.out.println("------ =-= ------nowUserId--------------------------"+nowUserId);
for (HistoricTaskInstance hti : htiList) {
//判断一下当前的用户是否为当前任务的审批负责人 ， 感觉后面通过权限赋予也可以不加这个判断
//if (currUsers.get(0).getUserId().equals(nowUserId)&& hti.getId().equals(task.getId())) {
if ( currUsers.get(0).getUserId().toString().equals(nowUserId)&&hti.getId().equals(task.getId())) {
myTaskId = hti.getId(); //当前任务id
myTask = hti;
break;
}
}
if (null == myTaskId) {
//throw new Exception("该任务非当前用户提交，无法撤回");
System.out.println("该任务非当前用户提交，无法撤回~~!!");
}
String processDefinitionId = myTask.getProcessDefinitionId();
//获取流程模型
BpmnModel bpmnModel = repositoryService.getBpmnModel(processDefinitionId);
String myActivityId = null;
//查询已经完成的流程节点，查询到上一条已完成的节点，则跳出循环
List<HistoricActivityInstance> haiList = historyService.createHistoricActivityInstanceQuery()
.executionId(myTask.getExecutionId())
.finished()
.orderByHistoricActivityInstanceStartTime()
.desc()
.list();
System.out.println("---------------the latest finished---------------"+haiList.get(0));
myActivityId = haiList.get(0).getActivityId();
// for (HistoricActivityInstance hai : haiList) {
// if (myTaskId.equals(hai.getTaskId())) {
// myActivityId = hai.getActivityId();
// break;
// }
// }
//最近一个已完成节点的 FlowNode
FlowNode myFlowNode = (FlowNode) bpmnModel.getMainProcess().getFlowElement(myActivityId);
//原本的活动方向
Execution execution = runtimeService.createExecutionQuery().executionId(task.getExecutionId()).singleResult();
String activityId = execution.getActivityId();
FlowNode flowNode = (FlowNode) bpmnModel.getMainProcess().getFlowElement(activityId);
//记录原活动方向
List<SequenceFlow> oriSequenceFlows = new ArrayList<SequenceFlow>();
oriSequenceFlows.addAll(flowNode.getOutgoingFlows());
//清理活动方向
flowNode.getOutgoingFlows().clear();
//建立新方向
List<SequenceFlow> newSequenceFlowList = new ArrayList<SequenceFlow>();
SequenceFlow newSequenceFlow = new SequenceFlow();
newSequenceFlow.setId("newSequenceFlowId"+" WITHDRAW: "+nowtime());
//新方向的源头---当前节点
newSequenceFlow.setSourceFlowElement(flowNode);
//新方向的目标---上一个已完成节点
newSequenceFlow.setTargetFlowElement(myFlowNode);
newSequenceFlowList.add(newSequenceFlow);
flowNode.setOutgoingFlows(newSequenceFlowList);
Authentication.setAuthenticatedUserId(nowUserId);
taskService.addComment(task.getId(), task.getProcessInstanceId(), "撤回");
//完成任务
taskService.complete(task.getId());
//恢复原方向
flowNode.setOutgoingFlows(oriSequenceFlows);
System.out.println("------------------withdraw successfully！！----------------------------");
logger.info("退回成功！");
}2.回退到当前审批用户指定的节点
先查询一下当前流程实例的历史Activity表：
java
/**
* 展示历史Activity表
* @param proInstanceId
* @return
*/
@Override
@Transactional
public List hisActInst(String proInstanceId){
HistoricProcessInstance instance = historyService.createHistoricProcessInstanceQuery().processInstanceBusinessKey(proInstanceId).singleResult();
String processInstanceId = instance.getId();
//获取待执行的任务节点
Task task = taskService.createTaskQuery().processInstanceId(processInstanceId).singleResult();
if(task == null){
// throw new Exception("sorry,the process is not started or has finished, cannot be withdrawn");
System.out.println("sorry,the process is not started or has finished, cannot be withdrawn");
}
//通过processInstanceId查询历史节点
List<HistoricTaskInstance> htiList = historyService.createHistoricTaskInstanceQuery()
.processInstanceId(processInstanceId)
.orderByTaskCreateTime()
.asc()
.list();
String myTaskId = null;
HistoricTaskInstance myTask = null;
//找到当前运行的节点
HistoricProcessInstance processInstance = historyService.createHistoricProcessInstanceQuery().processInstanceId(processInstanceId).singleResult();
ProcInstance procInstance = procInstanceMapper.selectById(processInstance.getBusinessKey()).get(0);
SysUser startUser = sysUserService.selectUserById(procInstance.getUserId());
List<SysUser> currUsers = findCurrUsers(task, startUser);
for (HistoricTaskInstance hti : htiList) {
//判断一下当前的用户是否为当前任务的审批负责人 ， 感觉后面通过权限赋予也可以不加这个判断
//if (currUsers.get(0).getUserId().equals(nowUserId)&& hti.getId().equals(task.getId())) {
if ( hti.getId().equals(task.getId())) {
myTaskId = hti.getId(); //当前任务id
myTask = hti;
break;
}
}
if (null == myTaskId) {
//throw new Exception("该任务非当前用户提交，无法撤回");
System.out.println("该任务非当前用户提交，无法撤回~~!!");
}
List<HistoricActivityInstance> haiList = historyService.createHistoricActivityInstanceQuery()
.executionId(myTask.getExecutionId())
.finished()
.orderByHistoricActivityInstanceStartTime()
.desc()
.list();
return haiList;
}在根据获取到的目标回退节点的ActivityId进行回退操作：
java
/**
* 回退到指定节点处
* @param processInstanceId
* @param nowUserId
* @param tarActivityId
* @return
*/
@Override
@Transactional
public void rollBackToSpec(String processInstanceId, String nowUserId, String tarActivityId) {
//获取待执行的任务节点
Task task = taskService.createTaskQuery().processInstanceId(processInstanceId).singleResult();
if(task == null){
// throw new Exception("sorry,the process is not started or has finished, cannot be withdrawn");
System.out.println("sorry,the process is not started or has finished, cannot be withdrawn");
}
//通过processInstanceId查询历史节点
List<HistoricTaskInstance> htiList = historyService.createHistoricTaskInstanceQuery()
.processInstanceId(processInstanceId)
.orderByTaskCreateTime()
.asc()
.list();
String myTaskId = null;
HistoricTaskInstance myTask = null;
//找到当前运行的节点
HistoricProcessInstance processInstance = historyService.createHistoricProcessInstanceQuery().processInstanceId(processInstanceId).singleResult();
ProcInstance procInstance = procInstanceMapper.selectById(processInstance.getBusinessKey()).get(0);
SysUser startUser = sysUserService.selectUserById(procInstance.getUserId());
List<SysUser> currUsers = findCurrUsers(task, startUser);
System.out.println("----------- =-= -------currUser-----------------------"+currUsers.get(0).getUserId());
System.out.println("------ =-= ------nowUserId--------------------------"+nowUserId);
for (HistoricTaskInstance hti : htiList) {
//判断一下当前的用户是否为当前任务的审批负责人 ， 感觉后面通过权限赋予也可以不加这个判断
//if (currUsers.get(0).getUserId().equals(nowUserId)&& hti.getId().equals(task.getId())) {
if ( currUsers.get(0).getUserId().toString().equals(nowUserId)&&hti.getId().equals(task.getId())) {
myTaskId = hti.getId(); //当前任务id
myTask = hti;
break;
}
}
if (null == myTaskId) {
//throw new Exception("该任务非当前用户提交，无法撤回");
System.out.println("该任务非当前用户提交，无法撤回~~!!");
}
String processDefinitionId = myTask.getProcessDefinitionId();
//获取流程模型
BpmnModel bpmnModel = repositoryService.getBpmnModel(processDefinitionId);
// String myActivityId = null;
//查询已经完成的流程节点，查询到上一条已完成的节点，则跳出循环
// List<HistoricActivityInstance> haiList = historyService.createHistoricActivityInstanceQuery()
// .executionId(myTask.getExecutionId())
// .finished()
// .orderByHistoricActivityInstanceStartTime()
// .desc()
// .list();
// System.out.println("---------------the latest finished---------------"+haiList.get(0));
// myActivityId = haiList.get(0).getActivityId();
//想要回退到的节点位置
System.out.println(tarActivityId);
FlowNode myFlowNode = (FlowNode) bpmnModel.getMainProcess().getFlowElement(tarActivityId);
//原本的活动方向
Execution execution = runtimeService.createExecutionQuery().executionId(task.getExecutionId()).singleResult();
String activityId = execution.getActivityId();
FlowNode flowNode = (FlowNode) bpmnModel.getMainProcess().getFlowElement(activityId);
//记录原活动方向
List<SequenceFlow> oriSequenceFlows = new ArrayList<SequenceFlow>();
oriSequenceFlows.addAll(flowNode.getOutgoingFlows());
//清理活动方向
flowNode.getOutgoingFlows().clear();
//建立新方向
List<SequenceFlow> newSequenceFlowList = new ArrayList<SequenceFlow>();
SequenceFlow newSequenceFlow = new SequenceFlow();
newSequenceFlow.setId("newSequenceFlowId"+" ROLLBACK: "+nowtime());
//新方向的源头---当前节点
newSequenceFlow.setSourceFlowElement(flowNode);
System.out.println("--------------new flow-----------------"+flowNode);
//新方向的目标---要回退的节点
System.out.println("--------------target flow-----------------"+myFlowNode);
newSequenceFlow.setTargetFlowElement(myFlowNode);
newSequenceFlowList.add(newSequenceFlow);
flowNode.setOutgoingFlows(newSequenceFlowList);
Authentication.setAuthenticatedUserId(nowUserId);
taskService.addComment(task.getId(), task.getProcessInstanceId(), "回退");
//完成任务
System.out.println("========================完成任务====================");
taskService.complete(task.getId());
//恢复原方向
flowNode.setOutgoingFlows(oriSequenceFlows);
System.out.println("------------------RollBack successfully！！----------------------------");
logger.info("退回成功！");
//将退回完成后的当前节点的task返回
// HistoricActivityInstance historicActivityInstance = historyService.createHistoricActivityInstanceQuery().activityId(tarActivityId).singleResult();
//
// return historicActivityInstance.getTaskId();
}