Spring与Struts2集成开发

Struts2和Spring都是不错的开源框架，Spring与Struts2集成开发，把二者结合在一起使用，开发效果更佳，效率杠杠的。下面介绍一下如何将Spring与Struts2集成在一起开发。分七步战略：

1、添加Struts2 支持jar包  ；注意:加上一个Struts-spring-plugin（集成）插件包2、添加spring 支持jar包3、编写struts.xml配置文件注意：Action是交由Spring管理；所以action class属性应和spring 中配置的Action  Bean ID一致

<!DOCTYPE struts PUBLIC    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"    "http://struts.apache.org/dtds/struts-2.3.dtd">    <struts>        <package name="default" namespace="/" extends="struts-default">            <!-- 配置用户ACTION                 Action由Spring维护                class就是spring中Action  Bean的ID            -->            <action name="useraction*" class="useraction" method="{1}">                <result name="success" type="redirect">success.jsp</result>                <result name="login" type="redirect">index.jsp</result>            </action>                    </package>    </struts>

4、在web.xml中配置struts2过滤器

<?xml version="1.0" encoding="UTF-8"?><web-app version="2.5"     xmlns="http://java.sun.com/xml/ns/javaee"     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee     http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">    <!-- 配置struts2核心过滤器 -->    <filter>        <filter-name>Struts2</filter-name>        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>    </filter>    <filter-mapping>        <filter-name>Struts2</filter-name>        <url-pattern>/*</url-pattern>    </filter-mapping>        <!-- 指定spring配置文件所在位置 -->    <context-param>        <param-name>contextConfigLocation</param-name>        <param-value>classpath:applicationContext.xml</param-value>    </context-param>    <!-- 配置sprig监听器 -->    <listener>        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    </listener>        <welcome-file-list>      <welcome-file>index.jsp</welcome-file>    </welcome-file-list></web-app>

5、编写spring配置文件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"       xsi:schemaLocation="http://www.springframework.org/schema/beans           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">        <!-- 配置持久化层 new userdao()-->    <bean id="userdao" class="DAO.impl.UserDaoimpl" scope="prototype"></bean>        <!-- 创建业务层 new userbiz() -->      <bean id="userbiz" class="BIZ.impl.UserBizimpl" scope="prototype">          <!-- 注入持久化层 DAO              IUuserDao userdao = new userdao()          -->          <property name="userdao" ref="userdao"></property>      </bean>            <bean id="useraction" class="Action.UserAction" scope="prototype">          <!-- 注入业务层BIZ               IUserBiz userbiz = new UserBiz()          -->          <property name="userbiz" ref="userbiz"></property>      </bean></beans>

6、在web.xml中配置spring监听器和指定配置文件所在位置（注:如果其文件在WEB-INF/applicatonContext.xml下的话就不需要指定）

        <!-- 指定spring配置文件所在位置 -->    <context-param>        <param-name>contextConfigLocation</param-name>        <param-value>classpath:applicationContext.xml</param-value>    </context-param>    <!-- 配置sprig监听器 -->    <listener>        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    </listener>

7、编写三层结构；通过spring依次注入各依赖对象BIZ 中注入 DAO层Action 层中注入  BIZ层