Struts2学习-ssh框架

SSH是 struts+spring+hibernate的一个集成框架，是目前比较流行的一种Web应用程序开源框架。

http://www.cnblogs.com/laibin/p/5847111.html

1.新建以下的类

2.接口

UserDao负责数据

package com.nf.dao;

import com.nf.entity.User;

public interface UserDao {
    //这是数据库层面的操作，
    //往往编写dao的人，不用考虑业务逻辑的
    //单对象例如，User,以及List,例如UserList
    //编写增删改查

    public User getUserById(String id);

    //public boolean delUserById();

    //public boolean updateUser();
}

UserDaoImpl继承UserDao接口

package com.nf.dao.impl;

import com.nf.dao.UserDao;
import com.nf.entity.User;

public class UserDaoImpl implements UserDao{
    public User getUserById(String id) {
        //写JDBC或者hibernate等代码，获取user
        //模拟从数据库已经取了一个User
        User user = new User();
        user.setUserName("小李");
        user.setUserPassword("123456");
        return user;
    }
}

UserService有一个方法，获取id

UserServiceImpl继承方法并new一个获取的userDao

package com.nf.service.impl;

import com.nf.dao.UserDao;
import com.nf.entity.User;
import com.nf.service.UserService;

public class UserServiceImpl implements UserService {
    private UserDao userDao = null;

    public UserDao getUserDao() {
        return userDao;
    }

    public void setUserDao(UserDao userDao) {
        this.userDao = userDao;
    }

    public String getUserNameById(String id) {
        User user = userDao.getUserById(id);
        if ("123456".equals(user.getUserPassword())){
            return user.getUserName()+"(弱密码)";
        }
        else {
            return user.getUserName();
        }

    }
}

3.service

需要一个service，就定义service的接口为属性,UserAction

private UserService userService = null;
    public UserService getUserService() {
        return userService;
    }
    public void setUserService(UserService userService) {
        this.userService = userService;
    }

    @Override
    public String execute() throws Exception {
        //userService=new UserServiceImpl();
        String userName = userService.getUserNameById("123");
        System.out.println(userName);
        return this.NONE;
    }

4.

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

<!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
        "http://struts.apache.org/dtds/struts-2.5.dtd">

<struts>
    <constant name="struts.objectFactory" value="spring"></constant>

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

        <action name="index" class="userAction"></action>

    </package>

</struts>

<?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="com.nf.action.UserAction" scope="prototype">
        <property name="userService" ref="userService"></property>
    </bean>

    <bean id="userService" class="com.nf.service.impl.UserServiceImpl" scope="prototype">
        <property name="userDao" ref="userDao"></property>
    </bean>

    <bean id="userDao" class="com.nf.dao.impl.UserDaoImpl" scope="prototype"></bean>

</beans>

ps：有一个web.xml

<!--1个spring的监听器-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

地址：https://gitee.com/MuNianShi/ssh001.git