Spring与Struts框架整合

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