Spring，Struts2，MyBatis，Activiti，Maven，H2，Tomcat集成（四）——Activiti集成

1、添加Activiti Maven依赖；

    <!-- ==============================activiti=========================== -->
    <dependency>
      <groupId>org.activiti</groupId>
      <artifactId>activiti-engine</artifactId>
      <version>5.17.0</version>
    </dependency>
    <dependency>
      <groupId>org.activiti</groupId>
      <artifactId>activiti-spring</artifactId>
      <version>5.17.0</version>
    </dependency>
    <!-- activiti需要log4j日志 -->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>1.7.6</version>
    </dependency>

2、Spring集成Activiti；

    <!-- ===================================activiti配置=================================== -->
    <!-- activiti配置 -->
    <bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">
        <!-- 数据源 -->
        <property name="dataSource" ref="dataSource" />
        <!-- 配置事务管理器，统一事务 -->
        <property name="transactionManager" ref="transactionManager" />
        <!-- 设置建表策略 -->
        <property name="databaseSchemaUpdate" value="true" />

        <property name="jobExecutorActivate" value="false" />
        <property name="asyncExecutorEnabled" value="true" />
        <property name="asyncExecutorActivate" value="false" />
      </bean>

      <bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">
        <property name="processEngineConfiguration" ref="processEngineConfiguration" />
      </bean>

      <bean id="repositoryService" factory-bean="processEngine" factory-method="getRepositoryService" />
      <bean id="runtimeService" factory-bean="processEngine" factory-method="getRuntimeService" />
      <bean id="taskService" factory-bean="processEngine" factory-method="getTaskService" />
      <bean id="historyService" factory-bean="processEngine" factory-method="getHistoryService" />
      <bean id="formService" factory-bean="processEngine" factory-method="getFormService" />

3、由于使用了log4j，在src/main/resources目录下添加log4j配置文件log4j.properties；

log4j.rootLogger=WARN, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%n

4、添加bpmn流程配置文件Interview.bpmn；

<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
xmlns:activiti="http://activiti.org/bpmn"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
targetNamespace="Examples"
xsi:schemaLocation="http://www.omg.org/spec/BPMN/20100524/MODEL
http://www.omg.org/spec/BPMN/2.0/20100501/BPMN20.xsd">
    <process id="Interview" name="某公司2012年实习生招聘流程">
        <documentation>招聘工作流程</documentation>
        <startEvent id="start" name="实习生招聘启动"/>
        <userTask id="bishi" name="笔试" activiti:candidateGroups="人力资源部"/>
        <sequenceFlow id="flow1" name="" sourceRef="start" targetRef="bishi"/>
        <userTask id="yimian" name="技术一面" activiti:candidateGroups="技术部"/>
        <sequenceFlow id="flow2" name="" sourceRef="bishi" targetRef="yimian"/>
        <userTask id="ermian" name="技术二面" activiti:candidateGroups="技术部"/>
        <sequenceFlow id="flow3" name="" sourceRef="yimian" targetRef="ermian"/>
        <userTask id="hrmian" name="HR面" activiti:candidateGroups="人力资源部"/>
        <sequenceFlow id="flow4" name="" sourceRef="ermian" targetRef="hrmian"/>
        <userTask id="luyong" name="录用，发放Offer" activiti:candidateGroups="人力资源部"/>
        <sequenceFlow id="flow5" name="" sourceRef="hrmian" targetRef="luyong"/>
        <endEvent id="end" name="实习生招聘结束"/>
        <sequenceFlow id="flow6" name="" sourceRef="luyong" targetRef="end"/>
    </process>
</definitions>

5、添加Activiti测试类；

package com.coshaho.learn.service.test;

import java.util.List;

import org.activiti.engine.HistoryService;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.TaskService;
import org.activiti.engine.history.HistoricProcessInstance;
import org.activiti.engine.task.Task;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class ActivitiTest
{
    public static void main(String[] args)
    {
        @SuppressWarnings("resource")
        ApplicationContext ac = new ClassPathXmlApplicationContext(new String[]{"spring.xml"});
        ProcessEngine processEngine = (ProcessEngine)ac.getBean("processEngine");

        // 发布流程
        RepositoryService repositoryService = processEngine.getRepositoryService();
        repositoryService.createDeployment().addClasspathResource("Interview.bpmn").deploy();  

        // 启动流程实例
        RuntimeService runtimeService = processEngine.getRuntimeService();
        String processId = runtimeService.startProcessInstanceByKey("Interview").getId();
        System.out.println("此次启动的流程实例为：" + processId);

        // 获取人力资源任务
        TaskService taskService = processEngine.getTaskService();
        List<Task> tasks = taskService.createTaskQuery().taskCandidateGroup("人力资源部").list();
        System.out.println("******人力资源部任务列表******");
        for (Task task : tasks)
        {
            if("笔试".equals(task.getName()))
            {
                System.out.println("张三领取笔试任务：" + task.getId());
                taskService.claim(task.getId(), "张三");
            }
            else if("HR面".equals(task.getName()))
            {
                System.out.println("李四领取HR面任务：" + task.getId());
                taskService.claim(task.getId(), "李四");
            }
            else
            {
                System.out.println("王五领取发放Offer任务：" + task.getId());
                taskService.claim(task.getId(), "王五");
            }
        }  

        System.out.println("张三的笔试任务数量："+taskService.createTaskQuery().taskAssignee("张三").count());
        tasks = taskService.createTaskQuery().taskAssignee("张三").list();
        for (Task task : tasks)
        {
            System.out.println("张三处理笔试任务, id:"+task.getId());
            taskService.complete(task.getId());
        }   

        System.out.println("李四的HR面任务数量："+taskService.createTaskQuery().taskAssignee("李四").count());
        tasks = taskService.createTaskQuery().taskAssignee("李四").list();
        for (Task task : tasks)
        {
            System.out.println("李四处理HR面任务, id:"+task.getId());
            taskService.complete(task.getId());
        }  

        System.out.println("王五的发放Offer任务数量："+taskService.createTaskQuery().taskAssignee("王五").count());
        tasks = taskService.createTaskQuery().taskAssignee("王五").list();
        for (Task task : tasks)
        {
            System.out.println("王五处理发放Offer任务, id:"+task.getId());
            taskService.complete(task.getId());
        }  

        tasks = taskService.createTaskQuery().taskCandidateGroup("技术部").list();
        System.out.println("******技术部任务列表******");
        for (Task task : tasks)
        {
            if("技术一面".equals(task.getName()))
            {
                System.out.println("马六领取技术一面任务：" + task.getId());
                taskService.claim(task.getId(), "马六");
            }
            else
            {
                System.out.println("胜七领取技术二面任务：" + task.getId());
                taskService.claim(task.getId(), "胜七");
            }
        }
        System.out.println("马六的技术一面任务数量："+taskService.createTaskQuery().taskAssignee("马六").count());
        tasks = taskService.createTaskQuery().taskAssignee("马六").list();
        for (Task task : tasks)
        {
            System.out.println("马六处理技术一面任务, id:"+task.getId());
            taskService.complete(task.getId());
        }
        System.out.println("胜七的技术二面任务数量："+taskService.createTaskQuery().taskAssignee("胜七").count());
        tasks = taskService.createTaskQuery().taskAssignee("胜七").list();
        for (Task task : tasks)
        {
            System.out.println("胜七处理技术二面任务, id:"+task.getId());
            taskService.complete(task.getId());
        }  

        HistoryService historyService = processEngine.getHistoryService();
        List<HistoricProcessInstance> historicProcessInstanceList = historyService
                .createHistoricProcessInstanceQuery().list();

        if(null != historicProcessInstanceList && 0 != historicProcessInstanceList.size())
        {
            for(HistoricProcessInstance hisInstance : historicProcessInstanceList)
            {
                System.out.println("历史流程, id = "+hisInstance.getId()
                        + ", end time = " + hisInstance.getEndTime());
            }
        }
    }
}

6、运行测试类，可得到如下结果。

此次启动的流程实例为：7504
******人力资源部任务列表******
王五领取发放Offer任务：5015
李四领取HR面任务：5023
张三领取笔试任务：7507
张三的笔试任务数量：1
张三处理笔试任务, id:7507
李四的HR面任务数量：1
李四处理HR面任务, id:5023
王五的发放Offer任务数量：1
王五处理发放Offer任务, id:5015
******技术部任务列表******
胜七领取技术二面任务：5020
马六领取技术一面任务：7513
马六的技术一面任务数量：1
马六处理技术一面任务, id:7513
胜七的技术二面任务数量：1
胜七处理技术二面任务, id:5020
历史流程, id = 2501, end time = null
历史流程, id = 4, end time = Sun Dec 27 18:31:14 COT 2015
历史流程, id = 5004, end time = null
历史流程, id = 7504, end time = null

同时，我们可以查看数据库，Activiti引擎自动创建以ACT开头的Activiti业务表。