activiti学习--13：组任务分配方式3--使用类

方式3：使用类
task.bpmn

<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/test">
  <process id="task" name="taskProcess" isExecutable="true">
    <startEvent id="startevent1" name="Start"></startEvent>
    <userTask id="usertask1" name="审批">
      <extensionElements>
        <activiti:taskListener event="create" class="cn.fei.test95.TaskListenerImpl"></activiti:taskListener>
      </extensionElements>
    </userTask>
    <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
    <endEvent id="endevent1" name="End"></endEvent>
    <sequenceFlow id="flow2" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>
  </process>
  <bpmndi:BPMNDiagram id="BPMNDiagram_task">
    <bpmndi:BPMNPlane bpmnElement="task" id="BPMNPlane_task">
      <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="390.0" y="50.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
        <omgdc:Bounds height="55.0" width="105.0" x="355.0" y="150.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="390.0" y="270.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
        <omgdi:waypoint x="407.0" y="85.0"></omgdi:waypoint>
        <omgdi:waypoint x="407.0" y="150.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
        <omgdi:waypoint x="407.0" y="205.0"></omgdi:waypoint>
        <omgdi:waypoint x="407.0" y="270.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
  </bpmndi:BPMNDiagram>
</definitions>

TaskListenerImpl

@SuppressWarnings("serial")
public class TaskListenerImpl implements TaskListener {

    /**用来指定任务的办理人*/
    @Override
    public void notify(DelegateTask delegateTask) {
        //指定个人任务的办理人，也可以指定组任务的办理人
        //个人任务：通过类去查询数据库，将下一个任务的办理人查询获取，然后通过setAssignee()的方法指定任务的办理人
        //组任务：
        delegateTask.addCandidateUser("a");
        delegateTask.addCandidateUser("b");
        delegateTask.addCandidateUser("c");
        delegateTask.addCandidateUser("d");
    }

}

代码执行

    /**部署流程定义（从inputStream）*/
    @Test
    public void deploymentProcessDefinition_inputStream(){
        InputStream inputStreamBpmn = this.getClass().getResourceAsStream("task.bpmn");
        InputStream inputStreamPng = this.getClass().getResourceAsStream("task.png");
        Deployment deployment = processEngine.getRepositoryService()//与流程定义和部署对象相关的Service
                        .createDeployment()//创建一个部署对象
                        .name("组任务")//添加部署的名称
                        .addInputStream("task.bpmn", inputStreamBpmn)//
                        .addInputStream("task.png", inputStreamPng)//
                        .deploy();//完成部署
        System.out.println("部署ID："+deployment.getId());//
        System.out.println("部署名称："+deployment.getName());//
//      输出：
//      部署ID：5901
//      部署名称：组任务
    }

    /**启动流程实例*/
    @Test
    public void startProcessInstance(){
        //流程定义的key
        String processDefinitionKey = "task";
        ProcessInstance pi = processEngine.getRuntimeService()//与正在执行的流程实例和执行对象相关的Service
                        .startProcessInstanceByKey(processDefinitionKey);//使用流程定义的key启动流程实例，key对应helloworld.bpmn文件中id的属性值，使用key值启动，默认是按照最新版本的流程定义启动
        //这里会执行TaskListenerImpl.java监听
        System.out.println("流程实例ID:"+pi.getId());//流程实例ID  
        System.out.println("流程定义ID:"+pi.getProcessDefinitionId());//流程定义ID  
//      输出：
//      流程实例ID:6001
//      流程定义ID:task:8:5904
    }