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
