Activiti 自动执行Service Task

在前一章《Activiti Spring集成Demo》的基础上进行测试

1.创建流程图

注意上图中Id为serviceTaskProcess，后边的流程实例要根据这个Id获取，才能执行流程。

在上图中点击Service Task1，见下图

将Service Task1 的处理逻辑Class设置为com.lei.demo.activiti.spring.service.task.ServiceTask1,

其他的Service Task2,3,4类似，xml如下

<?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="serviceTaskProcess" name="My process" isExecutable="true">
    <startEvent id="startevent1" name="Start"></startEvent>
    <parallelGateway id="parallelgateway1" name="Parallel Gateway1"></parallelGateway>
    <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="parallelgateway1"></sequenceFlow>
    <serviceTask id="servicetask1" name="Service Task1" activiti:class="com.lei.demo.activiti.spring.service.task.ServiceTask1"></serviceTask>
    <serviceTask id="servicetask2" name="Service Task2" activiti:class="com.lei.demo.activiti.spring.service.task.ServiceTask2"></serviceTask>
    <serviceTask id="servicetask3" name="Service Task3" activiti:class="com.lei.demo.activiti.spring.service.task.ServiceTask3"></serviceTask>
    <sequenceFlow id="flow2" sourceRef="parallelgateway1" targetRef="servicetask1"></sequenceFlow>
    <sequenceFlow id="flow3" sourceRef="parallelgateway1" targetRef="servicetask2"></sequenceFlow>
    <sequenceFlow id="flow4" sourceRef="parallelgateway1" targetRef="servicetask3"></sequenceFlow>
    <parallelGateway id="parallelgateway2" name="Parallel Gateway2"></parallelGateway>
    <sequenceFlow id="flow5" sourceRef="servicetask2" targetRef="parallelgateway2"></sequenceFlow>
    <sequenceFlow id="flow6" sourceRef="servicetask1" targetRef="parallelgateway2"></sequenceFlow>
    <serviceTask id="servicetask4" name="Service Task4" activiti:class="com.lei.demo.activiti.spring.service.task.ServiceTask4"></serviceTask>
    <sequenceFlow id="flow7" sourceRef="parallelgateway2" targetRef="servicetask4"></sequenceFlow>
    <parallelGateway id="parallelgateway3" name="Parallel Gateway3"></parallelGateway>
    <sequenceFlow id="flow8" sourceRef="servicetask4" targetRef="parallelgateway3"></sequenceFlow>
    <sequenceFlow id="flow9" sourceRef="servicetask3" targetRef="parallelgateway3"></sequenceFlow>
    <endEvent id="endevent1" name="End"></endEvent>
    <sequenceFlow id="flow10" sourceRef="parallelgateway3" targetRef="endevent1"></sequenceFlow>
  </process>
</definitions>

2.编写处理逻辑的Class

ServiceTask1.java如下，必须实现org.activiti.engine.delegate.JavaDelegate接口

package com.lei.demo.activiti.spring.service.task;

import java.util.logging.Logger;

import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.JavaDelegate;

public class ServiceTask1 implements JavaDelegate {

	private final Logger log = Logger.getLogger(ServiceTask1.class.getName());
	
	@Override
	public void execute(DelegateExecution execution) throws Exception {
		
		Thread.sleep(10000);  
        log.info("variavles=" + execution.getVariables());  
        execution.setVariable("task1", "I am task 1");  
        log.info("I am task 1."); 

	}

}

其他的ServiceTask相似

ServiceTask2.java

package com.lei.demo.activiti.spring.service.task;

import java.util.logging.Logger;

import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.JavaDelegate;

public class ServiceTask2 implements JavaDelegate {

	private final Logger log = Logger.getLogger(ServiceTask2.class.getName());
	
	@Override
	public void execute(DelegateExecution execution) throws Exception {
		
		Thread.sleep(10000);  
        log.info("variavles=" + execution.getVariables());  
        execution.setVariable("task2", "I am task 2");  
        log.info("I am task 2."); 

	}

}

ServiceTask3.java

package com.lei.demo.activiti.spring.service.task;

import java.util.logging.Logger;

import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.JavaDelegate;

public class ServiceTask3 implements JavaDelegate {

	private final Logger log = Logger.getLogger(ServiceTask3.class.getName());
	
	@Override
	public void execute(DelegateExecution execution) throws Exception {

		Thread.sleep(10000);  
        log.info("variavles=" + execution.getVariables());  
        execution.setVariable("task3", "I am task 3");  
        log.info("I am task 3.");

	}

}

ServiceTask4.java

package com.lei.demo.activiti.spring.service.task;

import java.util.logging.Logger;

import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.JavaDelegate;

public class ServiceTask4 implements JavaDelegate {

	private final Logger log = Logger.getLogger(ServiceTask4.class.getName());
	
	@Override
	public void execute(DelegateExecution execution) throws Exception {
		
		Thread.sleep(10000);  
        log.info("variavles=" + execution.getVariables());  
        execution.setVariable("task4", "I am task 4");  
        log.info("I am task 4."); 

	}

}

3.测试类

测试类AutomaticTaskTest.java

package com.lei.demo.activiti.spring.service.task;

import org.activiti.engine.ProcessEngine;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.runtime.ProcessInstance;
import org.junit.Assert;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class AutomaticTaskTest {
	
	private static ApplicationContext context;
	
	private static ProcessEngine processEngine;
	private static RepositoryService repositoryService;
	private static RuntimeService runtimeService;
	private static String deploymentId;
	
	public static void main(String[] args) throws Exception {
		System.out.println( "start" );
		AutomaticTaskTest.initialize();
		AutomaticTaskTest.test();
		System.out.println( "end" );
	}
	
	 public static void test() {
		 	
	        ProcessInstance pi = runtimeService.startProcessInstanceByKey("serviceTaskProcess");
	        System.out.println("ProcessInstance Id："+pi.getId());
	        System.out.println("ProcessInstance ActivitiId："+pi.getActivityId());
	        
	        Assert.assertEquals(true, pi.isEnded());
	 }
	

	protected static void initialize() throws Exception {
		
		context = new ClassPathXmlApplicationContext("spring-activiti.xml");
		
		System.out.println("创建Activiti流程引擎，Activiti主接口");
		processEngine = (ProcessEngine) context.getBean("processEngine");
		System.out.println("Activiti主接口创建完毕，processEngine Name:"+processEngine.getName());
		
		System.out.println("获取Activiti的资源操作接口--开始");
        repositoryService = processEngine.getRepositoryService();
        System.out.println("获取Activiti的资源操作接口--完毕");
        
        System.out.println("获得运行时操作接口--开始");
        runtimeService = processEngine.getRuntimeService();
        System.out.println("获得运行时操作接口--完毕");
		
        System.out.println("部署流程，创建数据库表--开始");
		deploymentId = repositoryService.createDeployment()  
	            .addClasspathResource("diagrams/ServiceTaskProcess.bpmn")  
	            .deploy().getId();
		System.out.println("部署流程，创建数据库表--完毕");
	}
    
	protected static void destroy() throws Exception {  
        repositoryService.deleteDeployment(deploymentId, true);  
    }
}

4.运行结果