Activiti的receive Task實戰

一 代碼

/**
* Copyright (C), 2020-2020, 軟件公司
* FileName: Trigger.java
* Author:   cakin
* Date:     2020/4/23
* Description: receiveTask流程執行
*/
package com.syc.activiti.chapter9;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.runtime.Execution;
import org.activiti.engine.runtime.ProcessInstance;

/**
* @className: Trigger
* @description: receiveTask流程執行
* @date: 2020/4/23
* @author: cakin
*/
public class Trigger {


    public static void main( String[] args ) {
        // 創建流程引擎
        ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
        // 得到流程存儲服務實例
        RepositoryService repositoryService = engine.getRepositoryService();
        // 得到運行時服務組件
        RuntimeService runtimeService = engine.getRuntimeService();
        // 部署流程描述文件
        repositoryService.createDeployment()
                .addClasspathResource("bpmn/chapter9/trigger.bpmn").deploy();
        // 開始流程
        ProcessInstance pi = runtimeService
                .startProcessInstanceByKey("vacationRequest");
        // 查找執行流（當前只有一個執行流）
        Execution exe = runtimeService.createExecutionQuery().activityId("receivetask1").singleResult();
        if (exe != null) {

/***************************************************************************
mysql> select ID_, REV_,PROC_INST_ID_ ,BUSINESS_KEY_ ,PARENT_ID_ ,PROC_DEF_ID_ ,SUPER_EXEC_,ROOT_PROC_INST_ID_ ,ACT_ID_ from act_ru_execution;
+--------+------+---------------+---------------+------------+---------------------------+-------------+--------------------+--------------+
| ID_    | REV_ | PROC_INST_ID_ | BUSINESS_KEY_ | PARENT_ID_ | PROC_DEF_ID_              | SUPER_EXEC_ | ROOT_PROC_INST_ID_ | ACT_ID_      |
+--------+------+---------------+---------------+------------+---------------------------+-------------+--------------------+--------------+
| 190005 |    1 | 190005        | NULL          | NULL       | vacationRequest:10:190004 | NULL        | 190005             | NULL         |
| 190006 |    1 | 190005        | NULL          | 190005     | vacationRequest:10:190004 | NULL        | 190005             | receivetask1 |
+--------+------+---------------+---------------+------------+---------------------------+-------------+--------------------+--------------+
2 rows in set (0.00 sec)
****************************************************************************/

            System.out.println("當前流程節點爲： receivetask1");
        }
        // 觸發等待節點
        runtimeService.trigger(exe.getId());
        // 查詢當前的流程節點
        exe = runtimeService.createExecutionQuery().activityId("usertask1").singleResult();
        if (exe != null) {
/***************************************************************************
mysql> select ID_, REV_,PROC_INST_ID_ ,BUSINESS_KEY_ ,PARENT_ID_ ,PROC_DEF_ID_ ,SUPER_EXEC_,ROOT_PROC_INST_ID_ ,ACT_ID_ from act_ru_execution;
+--------+------+---------------+---------------+------------+---------------------------+-------------+--------------------+-----------+
| ID_    | REV_ | PROC_INST_ID_ | BUSINESS_KEY_ | PARENT_ID_ | PROC_DEF_ID_              | SUPER_EXEC_ | ROOT_PROC_INST_ID_ | ACT_ID_   |
+--------+------+---------------+---------------+------------+---------------------------+-------------+--------------------+-----------+
| 190005 |    1 | 190005        | NULL          | NULL       | vacationRequest:10:190004 | NULL        | 190005             | NULL      |
| 190006 |    2 | 190005        | NULL          | 190005     | vacationRequest:10:190004 | NULL        | 190005             | usertask1 |
+--------+------+---------------+---------------+------------+---------------------------+-------------+--------------------+-----------+

mysql> select ID_ ,REV_, EXECUTION_ID_, PROC_INST_ID_ , PROC_DEF_ID_, NAME_ , PARENT_TASK_ID_ , DESCRIPTION_ , TASK_DEF_KEY_ , OWNER_, ASSIGNEE_  from act_ru_task;
+--------+------+---------------+---------------+---------------------------+---------------+-----------------+--------------+---------------+--------+-----------+
| ID_    | REV_ | EXECUTION_ID_ | PROC_INST_ID_ | PROC_DEF_ID_              | NAME_         | PARENT_TASK_ID_ | DESCRIPTION_ | TASK_DEF_KEY_ | OWNER_ | ASSIGNEE_ |
+--------+------+---------------+---------------+---------------------------+---------------+-----------------+--------------+---------------+--------+-----------+
| 190010 |    1 | 190006        | 190005        | vacationRequest:10:190004 | Complete Task | NULL            | NULL         | usertask1     | NULL   | NULL      |
+--------+------+---------------+---------------+---------------------------+---------------+-----------------+--------------+---------------+--------+-----------+
1 row in set (0.00 sec)
****************************************************************************/
            System.out.println("當前流程節點爲： usertask1");
        }
    }
}

二 流程文件

<?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="Examples">
  <process id="vacationRequest" name="vacationRequest" isExecutable="true">
    <startEvent id="startevent1" name="Start"></startEvent>
    <endEvent id="endevent1" name="End"></endEvent>
    <receiveTask id="receivetask1" name="Receive Task"></receiveTask>
    <userTask id="usertask1" name="Complete Task"></userTask>
    <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="receivetask1"></sequenceFlow>
    <sequenceFlow id="flow2" sourceRef="receivetask1" targetRef="usertask1"></sequenceFlow>
    <sequenceFlow id="flow3" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>
  </process>
</definitions>

三 運行結果

當前流程節點爲： receivetask 1190006
當前流程節點爲： usertask 1190006