这篇文章将为大家详细讲解有关Activiti Spring集成的示例分析，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。
Activiti版本：5.17.0
Eclipse版本：Kepler Service Release 2
JDK版本：1.7.0_51
Mysql版本：5.5.33
在Eclipse中集成了 Activiti Eclipse Designer 插件后（见《Eclipse 集成Activiti Eclipse Designer 插件》），
File->New->Other->Activiti->Activiti Project
Project Name为activiti-demo
创建项目后，默认是这样的
已经是maven结构，但是还需要将项目转换成maven项目
在项目上右键->Configure->Conver to Maven Project，见下图
转换完成后，编辑pom.xml，添加依赖包，见下
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.activiti.examples</groupId>
<artifactId>activiti-examples</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>BPMN 2.0 with Activiti - Examples</name>
<properties>
<activiti-version>5.17.0</activiti-version>
<spring-version>3.2.4.RELEASE</spring-version>
<mysql-version>5.1.29</mysql-version>
</properties>
<dependencies>
<!-- junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
</dependency>
<!-- spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring-version}</version>
</dependency>
<!-- activiti -->
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-engine</artifactId>
<version>${activiti-version}</version>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-spring</artifactId>
<version>${activiti-version}</version>
</dependency>
<!-- Mysql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql-version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.2</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-jdk14</artifactId>
<version>1.7.2</version>
</dependency>
</dependencies>
</project>目录结构如下
至此，准备工作到此结束
在src/main/resources下添加Spring的配置文件，spring-activiti.xml如下
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd"> <bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration"> <property name="dataSource" ref="dataSource" /> <property name="transactionManager" ref="transactionManager" /> <!-- databaseSchemaUpdate: 设置流程引擎启动和关闭时如何处理数据库表。 false（默认）：检查数据库表的版本和依赖库的版本， 如果版本不匹配就抛出异常。 true: 构建流程引擎时，执行检查，如果需要就执行更新。 如果表不存在，就创建。 create-drop: 构建流程引擎时创建数据库表， 关闭流程引擎时删除这些表。 --> <property name="databaseSchemaUpdate" value="true" /> <property name="jobExecutorActivate" value="false" /> <property name="asyncExecutorEnabled" value="true" /> <property name="asyncExecutorActivate" value="false" /> <property name="mailServerHost" value="mail.my-corp.com" /> <property name="mailServerPort" value="5025" /> </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="identityService" factory-bean="processEngine" factory-method="getIdentityService" /> <bean id="historyService" factory-bean="processEngine" factory-method="getHistoryService" /> <bean id="formService" factory-bean="processEngine" factory-method="getFormService" /> <bean id="managementService" factory-bean="processEngine" factory-method="getManagementService" /> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource" > <property name="driverClassName" value="com.mysql.jdbc.Driver" /> <property name="url" value="jdbc:mysql://192.168.150.63:3306/activiti?autoReconnect=true" /> <property name="username" value="root" /> <property name="password" value="root111111" /> <!-- <property name="defaultAutoCommit" value="false" /> --> </bean> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> </beans>
各个Activiti的主要bean的作用如下：
processEngineConfiguration Activiti流程引擎
processEngine Activiti的主接口
repositoryService Activiti的资源操作接口
runtimeService 运行时操作接口（大多操作流程实例）
taskService 任务操作接口
identityService 身份操作接口（用户和用户组）
historyService 历史查询接口
formService 表单数据绑定接口
managementService 管理接口
在src/main/resources/diagrams/下创建一个工作流，命名为DemoProcess.bpmn，如下图，利用Activiti插件新建流程图
此时进入Activiti Diagram Editor，在空白处点一下，下边属性栏中设置id和name，id就是这个流程的key，后边启动流程的时候使用到。
在图中单机FirstTask，设置其ID为firstTask，同样方法设置SecondTask的ID为secondTask
设置完毕后，此工作流以xml方式打开是这样的
<?xml version="1.0">
至此，流程设计完毕
package com.lei.demo.activiti.spring.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.repository.Deployment;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class DemoProcess {
private static ApplicationContext context;
public static void main(String[] args) {
System.out.println( "start" );
context = new ClassPathXmlApplicationContext("spring-activiti.xml");
//创建Activiti流程引擎，Activiti主接口
ProcessEngine processEngine = (ProcessEngine) context.getBean("processEngine");
System.out.println("processEngine Name:"+processEngine.getName());
// 获得Activiti的资源操作接口
RepositoryService repositoryService = processEngine.getRepositoryService();
//获得运行时操作接口（大多操作流程实例）
RuntimeService runtimeService = processEngine.getRuntimeService();
//部署流程定义，部署后，activiti会根据数据库配置自动创建表，添加数据
Deployment deployment = repositoryService
.createDeployment()
.addClasspathResource("diagrams/DemoProcess.bpmn")
.deploy();
System.out.println("deployment ID:"+deployment.getId()+" deployment Name:"+deployment.getName());
//启动流程实例 ,startProcessInstanceByKey参数DemoProcess即DemoProcess.bpmn中的ID
ProcessInstance instance = processEngine
.getRuntimeService().startProcessInstanceByKey("DemoProcess");
String procId = instance.getId();
System.out.println("procId:"+ procId);
//获得第一个任务 ，taskDefinitionKey参数为流程途中UserTask的ID
TaskService taskService = processEngine.getTaskService();
List<Task> tasks = taskService.createTaskQuery().taskDefinitionKey("firstTask").list();
for (Task task : tasks) {
System.out.println("Task信息: taskID -" +task.getId()+" taskName -"+ task.getName());
// 认领任务
taskService.claim(task.getId(), "testUser");
}
//完成任务前，输出testUser下的任务数量
System.out.println("完成任务前，testUser认领的task数量: "
+ taskService.createTaskQuery().taskAssignee("testUser").count());
//查看testUser 现在是否能够获取到该任务
tasks = taskService.createTaskQuery().taskAssignee("testUser").list();
for (Task task : tasks) {
System.out.println("Task for testUser: " + task.getName());
// 完成任务
taskService.complete(task.getId());
}
//完成任务后，输出testUser下的任务数量
System.out.println("完成任务后，testUser认领的task数量: "
+ taskService.createTaskQuery().taskAssignee("testUser").count());
// 获取并认领第二个任务
tasks = taskService.createTaskQuery().taskDefinitionKey("secondTask").list();
for (Task task : tasks) {
System.out.println("Task信息: taskID -" +task.getId()+" taskName -"+ task.getName());
taskService.claim(task.getId(), "testUser");
}
//完成第二个任务结束结束流程
for (Task task : tasks) {
taskService.complete(task.getId());
}
// 核实流程是否结束
HistoryService historyService = processEngine.getHistoryService();
HistoricProcessInstance historicProcessInstance = historyService
.createHistoricProcessInstanceQuery()
.processInstanceId(procId)
.singleResult();
System.out.println("流程实例结束时间: " + historicProcessInstance.getEndTime());
System.out.println( "end" );
}
}运行结果截图
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