与Spring集成
基础准备
目录结构
相关jar包
Activiti的相关jar包
Activiti依赖的相关jar包
Spring的相关jar包
Spring依赖的相关jar包
本示例相关jar包截图 
配置文件设置
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ActivitiDemo2" version="2.5">
<display-name>ActivitiDemo2</display-name>
<!-- 监听： 在启动Web 容器时，自动装配Spring applicationContext.xml 的配置信息 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 加载spring主配置文件 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:config/applicationContext.xml</param-value>
</context-param>
<!-- 配置spring拦截器 -->
<servlet>
<servlet-name>springMvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<!-- 配置请求路径 -->
<param-value>classpath:config/spring-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup><!-- load-on-startup必须放在最后 -->
</servlet>
<servlet-mapping>
<servlet-name>springMvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 转换为UTF-8编码 -->
<filter>
<filter-name>itxxzEncoding</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>itxxzEncoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app> spring-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 启用spring mvc 注解 -->
<context:annotation-config />
<!-- 设置使用注解的类所在的jar包 controller扫描路径 -->
<context:component-scan base-package="com.pzr.demo2.web.controller"></context:component-scan>
<mvc:annotation-driven>
<!-- 消息转换器，配置字符集解决乱码问题 -->
<mvc:message-converters register-defaults="true">
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<property name="supportedMediaTypes" value="text/html;charset=UTF-8" />
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
<!-- 使用jsp作为视图 -->
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp"></property>
</bean>
</beans>applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd">
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver">
</property>
<property name="url">
<value>jdbc:mysql://localhost:3306/actdemo1?useUnicode=true&characterEncoding=utf-8</value>
</property>
<property name="username" value="root">
</property>
<property name="password" value="">
</property>
</bean>
<!-- 配置事务 -->
<bean id="txManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!--使用基于注解方式配置事务 -->
<tx:annotation-driven transaction-manager="txManager" />
<!-- activiti事务管理 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 加载activiti引擎 -->
<bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">
<property name="processEngineConfiguration" ref="processEngineConfiguration" />
</bean>
<bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">
<property name="dataSource" ref="dataSource" />
<property name="transactionManager" ref="transactionManager" />
<property name="databaseSchemaUpdate" value="true" />
<property name="jobExecutorActivate" value="false" />
</bean>
<!-- activiti的各种服务接口 -->
<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="managementService" factory-bean="processEngine"
factory-method="getManagementService" />
</beans> 示例代码
编写一个controller来调用接口
FirstController.java
package com.pzr.demo2.web.controller;
import java.util.List;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.RuntimeService;
import org.activiti.engine.TaskService;
import org.activiti.engine.task.Task;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
@RequestMapping(value = "/first")
public class FirstController {
@RequestMapping(value = "/test1")
@ResponseBody
public String test(){
// 加载配置文件activiti.cfg.xml，创建引擎，如果出现null，可能原因
//1.加载路径不是根目录。
//2.依赖包不完全
// 获取配置文件后，引擎开始创建数据库。
ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
// 获取流程储存服务组件
RepositoryService rs = engine.getRepositoryService();
// 获取运行时服务组件
RuntimeService rse = engine.getRuntimeService();
// 获取流程中的任务TASK组件
TaskService ts = engine.getTaskService();
// 部署流程，只要是符合BPMN2规范的XML文件，理论上都可以被ACTIVITI部署
rs.createDeployment().addClasspathResource("com/pzr/demo2/diagrams/MyProcess.bpmn").deploy();
// 开启流程，myprocess是流程的ID
rse.startProcessInstanceByKey("myProcess");
// 查询历史表中的Task
List<Task> task = ts.createTaskQuery().list();
Task task1 = task.get(task.size()-1);
System.out.println("第一环节："+task1);
System.out.println("推动流程到下一环节："+task1);
ts.complete(task1.getId());
task1 = ts.createTaskQuery().executionId(task1.getExecutionId()).singleResult();
System.out.println("第二环节：" + task1);
return "测试成功";
}
@Autowired
RepositoryService repositoryService;
@Autowired
RuntimeService runtimeService;
@Autowired
TaskService taskService;
@RequestMapping(value = "/test2")
@ResponseBody
public String test2(){
StringBuffer sb = new StringBuffer();
// 部署流程，只要是符合BPMN2规范的XML文件，理论上都可以被ACTIVITI部署
repositoryService.createDeployment().addClasspathResource("com/pzr/demo2/diagrams/MyProcess.bpmn").deploy();
// 开启流程，myprocess是流程的ID
runtimeService.startProcessInstanceByKey("myProcess");
// 查询历史表中的Task
List<Task> task = taskService.createTaskQuery().list();
Task task1 = task.get(task.size()-1);
sb.append("第一环节："+task1 +"<br/>");
sb.append("推动流程到下一环节："+task1+"<br/>");
taskService.complete(task1.getId());
task1 = taskService.createTaskQuery().executionId(task1.getExecutionId()).singleResult();
sb.append("第二环节：" + task1+"<br/>");
return sb.toString();
}
}
其中test1()和test2()是作为对比的，test2()中接口全是用注入的方式使用的
把项目部署到tomcat中
启动项目，会自动建表
在浏览器运行http://localhost:8080/ActivitiDemo2/first/test2
结果如下图： 
示例下载
出现问题
Cannot create PoolableConnectionFactory (Unsupported character encoding ‘utf-8’.)
出现原因，将xml格式化化后，导致数据库配置部分出现换行
正常样子： 
格式化后（错误）样子： 
还原成正常样子即可解决问题