activiti搭建（二）与Spring集成

　　转载请注明源地址:http://www.cnblogs.com/lighten/p/5876773.html

　　本文主要讲解如何将Activiti和Spring框架集成，再过一段时间将会将一个基础的demo放在github上，地址将会在activiti系列导读文章中给出，如果未给出，则是因为没有构建完成（学习中，更新较慢）。按照搭建篇章的顺序，也能搭建起来。

　　上一章将了数据库的初始化，继续那章建立的maven项目。Activiti与Spring集成需要相应的jar包，下面将补充其他maven依赖：

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<dependency>     <groupId>org.activiti</groupId>     <artifactId>activiti-spring</artifactId>     <version>5.21.0</version> </dependency>   <dependency>     <groupId>org.springframework</groupId>     <artifactId>spring-webmvc</artifactId>     <version>4.1.5.RELEASE</version> </dependency>

　　先配置一下数据源，在src/main/resources下创建spring-db.xml文件，此文件用于配置数据库相关事项：

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<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xsi:schemaLocation="http://www.springframework.org/schema/beans     http://www.springframework.org/schema/beans/spring-beans.xsd">       <!-- 数据库配置文件 -->     <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">         <property name="locations">             <list>                 <value>classpath:db.properties</value>             </list>         </property>     </bean>           <!-- 数据库连接池 -->     <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">         <property name="driverClassName" value="${driverClassName}"/>         <property name="url" value="${url}"/>         <property name="username" value="${username}" />         <property name="password" value="${password}" />     </bean>           <!-- 数据库事务管理 -->     <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">         <property name="dataSource">             <ref bean="dataSource"/>         </property>     </bean> </beans>

　　这里将数据库的相关参数放入了文件db.properties中，并在xml中引用了，这样方便修改，路径依旧是classpath下，也可以改，相应的配置路径也做修改即可。文件内容如下：

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driverClassName=com.mysql.jdbc.Driver url=jdbc:mysql://localhost:3306/activiti?useSSL=false username=root password=root

　　在src/main/resources下创建spring-activiti.xml文件，此文件用于activiti的相关配置（当然也可以选择使用代码加注解的方式进行配置），里面内容如下：

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<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xsi:schemaLocation="http://www.springframework.org/schema/beans     http://www.springframework.org/schema/beans/spring-beans.xsd">       <bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">         <property name="dataSource"><ref bean="dataSource"/></property>         <property name="transactionManager"><ref bean="transactionManager"/></property>         <property name="databaseType" value="mysql"></property>         <property name="databaseSchemaUpdate" value="false"></property>     </bean>           <bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">         <property name="processEngineConfiguration" ref="processEngineConfiguration"></property>     </bean>           <!-- 7种服务 不一定全部使用 -->     <bean id="repositoryService" factory-bean="processEngine" factory-method="getRepositoryService"/>     <bean id="runtimeService" factory-bean="processEngine" factory-method="getRuntimeService"/>     <bean id="formService" factory-bean="processEngine" factory-method="getFormService"/>     <bean id="identityService" factory-bean="processEngine" factory-method="getIdentityService"/>     <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>

　　最后在classpath创建一个spring-app.xml，用于全局配置，将所有配置汇总。里面内容目前如下：

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<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xsi:schemaLocation="http://www.springframework.org/schema/beans     http://www.springframework.org/schema/beans/spring-beans.xsd">       <!-- 汇总配置 -->     <import resource="classpath:spring-db.xml"/>     <import resource="classpath:spring-activiti.xml"/> </beans>

　　最后在src/main/webapp/WEB-INF/web.xml中配置相关项：

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<?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"     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"     version="3.0">       <display-name>Archetype Created Web Application</display-name>       <context-param>         <description>Spring全局配置</description>         <param-name>contextConfigLocation</param-name>         <param-value>classpath:spring-app.xml</param-value>     </context-param>       <listener>         <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>     </listener> </web-app>

　　然后就能在tomcat中跑起来了。这只是一种最基本的配置方式，更详细的配置和相关说明会在之后一一补充讲解。数据源和事务管理可以改为自己需要的配置，也可以使用orm或者jpa，这个在id为processEngineConfiguration的bean中要添加相应的配置。