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