activiti学习--11接受任务活动

receiveTask.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="receiveTask" name="receiveTaskProcess" isExecutable="true">
    <startEvent id="startevent1" name="Start"></startEvent>
    <receiveTask id="receivetask1" name="财务报告"></receiveTask>
    <receiveTask id="receivetask2" name="发送给总裁"></receiveTask>
    <endEvent id="endevent1" name="End"></endEvent>
    <sequenceFlow id="flow1" sourceRef="receivetask2" targetRef="endevent1"></sequenceFlow>
    <sequenceFlow id="flow2" sourceRef="startevent1" targetRef="receivetask1"></sequenceFlow>
    <sequenceFlow id="flow3" sourceRef="receivetask1" targetRef="receivetask2"></sequenceFlow>
  </process>
  <bpmndi:BPMNDiagram id="BPMNDiagram_receiveTask">
    <bpmndi:BPMNPlane bpmnElement="receiveTask" id="BPMNPlane_receiveTask">
      <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="350.0" y="50.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="receivetask1" id="BPMNShape_receivetask1">
        <omgdc:Bounds height="55.0" width="105.0" x="315.0" y="150.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="receivetask2" id="BPMNShape_receivetask2">
        <omgdc:Bounds height="55.0" width="105.0" x="315.0" y="260.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="350.0" y="380.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
        <omgdi:waypoint x="367.0" y="315.0"></omgdi:waypoint>
        <omgdi:waypoint x="367.0" y="380.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
        <omgdi:waypoint x="367.0" y="85.0"></omgdi:waypoint>
        <omgdi:waypoint x="367.0" y="150.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
        <omgdi:waypoint x="367.0" y="205.0"></omgdi:waypoint>
        <omgdi:waypoint x="367.0" y="260.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
  </bpmndi:BPMNDiagram>
</definitions>

  /** 部署流程定义（从inputStream） */
    @Test
    public void deploymentProcessDefinition_inputStream() {
        InputStream inputStreamBpmn = this.getClass().getResourceAsStream("receiveTask.bpmn");
        InputStream inputStreamPng = this.getClass().getResourceAsStream("receiveTask.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("接收活动任务")// 添加部署的名称
                .addInputStream("receiveTask.bpmn", inputStreamBpmn)//
                .addInputStream("receiveTask.png", inputStreamPng)//
                .deploy();// 完成部署
        System.out.println("部署ID：" + deployment.getId());//
        System.out.println("部署名称：" + deployment.getName());//
        System.out.println("部署时间：" + deployment.getDeploymentTime());
        // 部署ID：3801
        // 部署名称：接收活动任务
        // 部署时间：Thu Sep 07 13:52:56 CST 2017

    }

    /** 启动流程实例+设置流程变量+向后执行一步+获取流程变量+向后执行一步 */
    @Test
    public void startProcessInstance() {
        // 流程定义的key.,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
        String processDefinitionKey = "receiveTask";
        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，
        System.out.println("流程实例ID:" + pi.getId());//
        System.out.println("流程定义ID:" + pi.getProcessDefinitionId());//
        // 流程实例ID:4001
        // 流程定义ID:receiveTask:1:3804

        /** 查询执行对象ID 关联表ACT_RU_EXECUTION */
        Execution execution1 = processEngine.getRuntimeService()//
                .createExecutionQuery()// 创建执行对象查询
                .processInstanceId(pi.getId())// 使用流程实例ID查询
                .activityId("receivetask1")// 当前活动的id，对应receiveTask.bpmn文件中的活动节点id的属性值
                .singleResult();
        // execution1:ProcessInstance[4001]

        /** 使用流程变量设置财务报告金额，用来传递业务参数 */
        processEngine.getRuntimeService()//
                .setVariable(execution1.getId(), "财务金额", 21000);

        // 财务报告节点，停在这里，向后执行一步
        /** 向后执行一步，如果流程处于等待状态，使得流程继续执行 */
        processEngine.getRuntimeService().signal(execution1.getId());

        /** 查询执行对象ID */
        Execution execution2 = processEngine.getRuntimeService()//
                .createExecutionQuery()// 创建执行对象查询
                .processInstanceId(pi.getId())// 使用流程实例ID查询
                .activityId("receivetask2")// 当前活动的id，对应receiveTask.bpmn文件中的活动节点id的属性值
                .singleResult();

        /** 从流程变量中获取财务金额的值 */
        Integer value = (Integer) processEngine.getRuntimeService()//
                .getVariable(execution2.getId(), "财务金额");
        System.out.println("总裁收到的金额是：" + value);
        // 总裁收到的金额是：21000
        /** 向后执行一步，如果流程处于等待状态，使得流程继续执行 */
        processEngine.getRuntimeService().signal(execution2.getId());

    }

解析：
1开启流程实例
2节点到财务报告，这里设置财务金额变量，并执行下一步
3节点到发送给总裁，获取变量的内容，执行下一步
4节点到结束
变化的表：
ACT_HI_ACTINST

ACT_HI_VARINST