Activiti7开发(三)-流程实例
0.前言
流程实例是与业务相关联的，先介绍一下业务：用户申请物品，领导进行审批(同意/拒绝)，同意：流程结束，申请状态为通过；拒绝：流程结束，申请状态为拒绝。
下图为流程图，key为material_apply
可以看到，"销售支持审批"设置的是变量${sale_support_member},逻辑是只能角色是"销售支持"的用户才可以审批。
在saleSupportVerify这个用户任何节点设置了两个表单属性
FormProperty_regionAdvice--__!!radio--__!!审批意见--__!!i--__!!同意--__--不同意
FormProperty_regionText--__!!textarea--__!!批注--__!!f__!!null
一个单选按钮：同意/驳回；一个输入框：可以写驳回理由等等。
在走向结束时，设置一个监听器，用来修改实体类的状态
@Slf4j
@Controller
public class MaterialListener implements ExecutionListener{
//获取流程图设置的状态值
private Expression state;
//一旦是走拒绝和最后审批的同意的都会触发这个监听器
//拒绝 state=2
//最后一个审批的同意 state=3
@Override
public void notify(DelegateExecution delegateExecution) {
Material material = new Material();
String processInstanceId = delegateExecution.getProcessInstanceId();
String status = (String)state.getValue(delegateExecution);
ProcessInstance processInstance = SpringUtils.getBean(RuntimeService.class).createProcessInstanceQuery().processInstanceId(processInstanceId).singleResult();
material.setId(Long.parseLong(processInstance.getBusinessKey()));
if(status.equals("3")){
material.setApplyStatus('3');
}else if(status.equals("2")){
material.setApplyStatus('2');
}
material.setUpdateBy(SecurityUtils.getUsername());
material.setUpdateTime(new Date());
SpringUtils.getBean(IMaterialService.class).updateById(material);
}
}
1.创建流程实例
注：businessKey是关键点，是实体类的id，从而与流程定义进行关联，并设置候选人(在此有一个问题，如果后期将某个人设置角色为销售支持，但他在自己的待办任务里面是看不到之前销售提交的审批任务的)
public AjaxResult submitApply(@RequestBody Material material){
//目前只设计了一级审批 销售支持部审批
try{
//将角色与每个审批用户做关联
List<String> saleSupportList = materialService.listByRoleName("sale_support_member");
String saleSupportJoin = StringUtils.join(saleSupportList,",");
// regionManager regionDirector president
ProcessInstance processInstance = runtimeService.createProcessInstanceBuilder()
.processDefinitionKey("material_apply")
.name(material.getApplyTitle())
//将流程实例与物料做关联
.businessKey(material.getId()+"")
.variable("sale_support_member",saleSupportJoin)
.start();
log.info("processInstanceId: "+processInstance.getProcessInstanceId());;
log.info("id: "+processInstance.getId());
material.setInstanceId(processInstance.getId());
//申请中
material.setApplyStatus('1');
materialService.updateById(material);
return AjaxResult.success("提交申请成功");
}catch (Exception e){
log.error("submitApply error: "+e.getMessage());
return AjaxResult.error("提交申请失败");
}
}
2.撤销申请(未实现)
逻辑：删除流程实例或者修改流程实例的状态为挂起
问题: 根据流程实例id没有获取到流程实例？
如果流程实例已结束，根据流程实例id获取不到流程实例；但目前只是刚创建了流程实例
public AjaxResult cancelApply(@RequestBody String instanceId) {
String msg = processDefinitionService.cancelApply(instanceId, "用户撤销");
return success(msg);
}
public String cancelApply(String instanceId, String reason) {
ProcessInstance instance = runtimeService.createProcessInstanceQuery().processInstanceId(instanceId)
.singleResult();
if(instance != null){
//说明流程实例还在进行中，可以撤销
runtimeService.deleteProcessInstance(instanceId,reason);
return "撤销申请成功";
}else{
return "流程已结束，不允许撤销申请";
}
}
// 执行此方法后未审批的任务 act_ru_task 会被删除，流程历史 act_hi_taskinst 不会被删除，并且流程历史的状态为finished完成
public String cancelApply(String instanceId, String reason) {
ProcessInstance instance = runtimeService.createProcessInstanceQuery().processInstanceId("e7361785-ec2c-11eb-89e3-0068ebbadc17")
.singleResult();
//true-暂停 false-激活
boolean suspend = instance.isSuspended();
String processInstanceId = instance.getId();
if(suspend){
//如果已暂停，就激活
runtimeService.activateProcessInstanceById(processInstanceId);
log.info("流程实例已激活");
runtimeService.deleteProcessInstance(instanceId, reason);
return "流程实例已激活";
}else{
//如果已激活，就暂停
runtimeService.suspendProcessInstanceById(processInstanceId);
log.info("流程实例已暂停");
runtimeService.deleteProcessInstance(instanceId, reason);
return "流程实例已暂停";
}
}
}
3.查看审批历史(流程实例)
有两种：
- 只获取审批节点(即只获取userTask)
- 获取全部节点，比如startEvent、userTask、gateWay、endEvent
public AjaxResult historyProcess(@PathVariable("instanceId") String instanceId) {
List<HistoricTaskInstance> list=historyService // 历史相关Service
.createHistoricTaskInstanceQuery() // 创建历史任务实例查询
.processInstanceId(instanceId) // 用流程实例id查询
.finished() // 查询已经完成的任务
.list();
list.stream().sorted(Comparator.comparing(HistoricTaskInstance::getStartTime));
List<ApplyHis> applyHisList = new ArrayList<>();
list.stream().forEach(
ht -> {
ApplyHis applyHis = new ApplyHis();
applyHis.setTaskName(ht.getName());
applyHis.setAssignee(ht.getAssignee());
applyHis.setStartTime(ht.getStartTime());
if(ht.getEndTime() != null){
applyHis.setEndTime(ht.getEndTime());
}
applyHisList.add(applyHis);
}
);
return AjaxResult.success(applyHisList);
}
4.查看审批高亮图
该功能设计三个请求：
- 根据流程实例id获取流程定义id、部署id、资源名
public AjaxResult getDefinitionsByInstanceId(@PathVariable("instanceId") String instanceId){
ProcessInstance pi = runtimeService // 获取运行时Service
.createProcessInstanceQuery() // 创建流程实例查询
.processInstanceId(instanceId) // 用流程实例id查询
.singleResult();
if(pi != null){
log.info("流程正在执行！");
log.info("流程定义id: "+pi.getProcessDefinitionId());
return AjaxResult.success(processDefinitionService.getDefinitionsByInstanceId(instanceId));
}else{
HistoricProcessInstance historicProcessInstance = historyService.createHistoricProcessInstanceQuery().processInstanceId(instanceId).singleResult();
String processDefinitionId = historicProcessInstance.getProcessDefinitionId();
ProcessDefinitionQuery pdq = repositoryService.createProcessDefinitionQuery();
ProcessDefinition pd = pdq.processDefinitionId(processDefinitionId).singleResult();
log.info("********************************************************************************");
log.info("deploymentId: "+pd.getDeploymentId());
String resourceName = pd.getResourceName();
log.info("resourceName: "+resourceName);
log.info("流程定义id: "+pd.getId());
log.info("********************************************************************************");
return AjaxResult.success(new DefinitionIdDTO(pd.getDeploymentId(),resourceName,pd.getId()));
}
}
- 根据流程实例id和流程定义id获取json形式的高亮数据
public AjaxResult gethighLine(@RequestParam("instanceId") String instanceId,@RequestParam("processDefinitionId") String processDefinitionId) {
ActivitiHighLineDTO activitiHighLineDTO = activitiHistoryService.getHighLine(instanceId,processDefinitionId);
return AjaxResult.success(activitiHighLineDTO);
}
public ActivitiHighLineDTO getHighLine(String instanceId,String processDefinitionId) {
//只有流程没走完的才能查找到流程实例
//ProcessInstance processInstance = runtimeService.createProcessInstanceQuery().processInstanceId(instanceId).singleResult();
//获取bpmnModel对象
BpmnModel bpmnModel = repositoryService.getBpmnModel(processDefinitionId);
//因为我们这里只定义了一个Process 所以获取集合中的第一个即可
Process process = bpmnModel.getProcesses().get(0);
//获取所有的FlowElement信息
Collection<FlowElement> flowElements = process.getFlowElements();
Map<String, String> map = new HashMap<>();
for (FlowElement flowElement : flowElements) {
//判断是否是连线
if (flowElement instanceof SequenceFlow) {
SequenceFlow sequenceFlow = (SequenceFlow) flowElement;
String ref = sequenceFlow.getSourceRef();
String targetRef = sequenceFlow.getTargetRef();
map.put(ref + targetRef, sequenceFlow.getId());
}
}
//获取流程实例 历史节点(全部)
List<HistoricActivityInstance> list = historyService.createHistoricActivityInstanceQuery()
.processInstanceId(instanceId)
.list();
//各个历史节点 两两组合 key
Set<String> keyList = new HashSet<>();
for (HistoricActivityInstance i : list) {
for (HistoricActivityInstance j : list) {
if (i != j) {
keyList.add(i.getActivityId() + j.getActivityId());
}
}
}
//高亮连线ID
Set<String> highLine = new HashSet<>();
keyList.forEach(s -> highLine.add(map.get(s)));
//获取流程实例 历史节点（已完成）
List<HistoricActivityInstance> listFinished = historyService.createHistoricActivityInstanceQuery()
.processInstanceId(instanceId)
.finished()
.list();
//高亮节点ID
Set<String> highPoint = new HashSet<>();
listFinished.forEach(s -> highPoint.add(s.getActivityId()));
//获取流程实例 历史节点（待办节点）
List<HistoricActivityInstance> listUnFinished = historyService.createHistoricActivityInstanceQuery()
.processInstanceId(instanceId)
.unfinished()
.list();
//需要移除的高亮连线
Set<String> set = new HashSet<>();
//待办高亮节点
Set<String> waitingToDo = new HashSet<>();
listUnFinished.forEach(s -> {
waitingToDo.add(s.getActivityId());
for (FlowElement flowElement : flowElements) {
//判断是否是 用户节点
if (flowElement instanceof UserTask) {
UserTask userTask = (UserTask) flowElement;
if (userTask.getId().equals(s.getActivityId())) {
List<SequenceFlow> outgoingFlows = userTask.getOutgoingFlows();
//因为 高亮连线查询的是所有节点 两两组合 把待办 之后 往外发出的连线 也包含进去了 所以要把高亮待办节点 之后 即出的连线去掉
if (outgoingFlows != null && outgoingFlows.size() > 0) {
outgoingFlows.forEach(a -> {
if (a.getSourceRef().equals(s.getActivityId())) {
set.add(a.getId());
}
});
}
}
}
}
});
highLine.removeAll(set);
Set<String> iDo = new HashSet<>(); //存放 高亮 我的办理节点
//当前用户已完成的任务
List<HistoricTaskInstance> taskInstanceList = historyService.createHistoricTaskInstanceQuery()
// .taskAssignee(SecurityUtils.getUsername())
.finished()
.processInstanceId(instanceId).list();
taskInstanceList.forEach(a -> iDo.add(a.getTaskDefinitionKey()));
ActivitiHighLineDTO activitiHighLineDTO =new ActivitiHighLineDTO();
activitiHighLineDTO.setHighPoint(highPoint);
activitiHighLineDTO.setHighLine(highLine);
activitiHighLineDTO.setWaitingToDo(waitingToDo);
activitiHighLineDTO.setiDo(iDo);
return activitiHighLineDTO;
}
返回结果
{
"highPoint" : ["StartEvent_1"],
"highLine" : [null,"Flow_0w19svd"],
"waitingToDo" : ["saleSupportVerify"],
"iDo" : []
}
- 根据第一个请求返回的部署id和资源名称获取xml
public void getProcessDefineXML(HttpServletResponse response,
@RequestParam("deploymentId") String deploymentId,
@RequestParam("resourceName") String resourceName) throws IOException {
processDefinitionService.getProcessDefineXML(response, deploymentId, resourceName);
}
- 将xml和第二个请求的响应数据结合，最后显现高亮进度图
