Spring与Struts框架整合

Struts,用Action处理请求

Hibernate,操作数据库

Spring,负责对象创建

Spring与Struts框架整合的关键点在与:让Struts框架action对象的创建,交给Spring来完成

整合步骤:

1.引入jar文件

• 引入struts相关jar文件
• 引入spring-core相关jar文件
• spring-web支持jar包

spring-web-3.2.5.RELEASE.jar 【Spring源码】

struts2-spring-plugin-2.3.4.1.jar 【Struts源码】

2.dao/service/action代码

dao代码:

public class UserDao {

    public void save() {

        System.out.println("DB:保存用户");

    }

}

service代码:

public class UserService {

    //IOC容器注入

    private UserDao userDao;

    public void setUserDao(UserDao userDao) {

        this.userDao = userDao;

    }

    public void save() {

        userDao.save();

    }

}

action代码:

public class UserAction extends ActionSupport {

    // springIOC容器注入

    private UserService userService;

    public void setUserService(UserService userService) {

        this.userService = userService;

    }

    public String execute() {

        userService.save();

        return SUCCESS;

    }

}

3.配置xml

Struts.xml:struts路径与action映射配置

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts PUBLIC

        "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"

        "http://struts.apache.org/dtds/struts-2.3.dtd">

<struts>

    <package name="user" extends="struts-default">

        <action name="user" class="userAction" method="execute">

            <result name="success">/index.jsp</result>

        </action>

    </package>

</struts>

bean.xml:spring ioc容器配置

三层bean.xml分开写:

bean-dao.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.xsd">

    <bean id="userDao" class="dao.UserDao"/>

</beans>

bean-service.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.xsd">

    <bean id="userService" class="service.UserService">

        <property name="userDao" ref="userDao"/>

    </bean>

</beans>

bean-action.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.xsd">

    <bean id="userAction" class="action.UserAction">

        <property name="userService" ref="userService"/>

    </bean>

</beans>

web.xml:要实现两个功能:核心过滤器： 引入struts功能以及初始化spring的ioc容器

web.xml

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"

         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"

         version="3.1">

    <!--1.struts配置-->

    <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>

    <!--2.Spring配置-->

    <!--以下通过查询源码获得-->

    <context-param>

        <!--固定值-->

        <param-name>contextConfigLocation</param-name>

        <!--spring配置文件的位置-->

        <param-value>/WEB-INF/classes/bean*.xml</param-value>

    </context-param>

    <!--实现以上功能的过滤器-->

    <listener>

        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

    </listener>

</web-app>

配置项目,运行即可