Spring Framework Part4 self-summeries-a simplified MVC framework

1.关于Spring Framework xml的头部

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xmlns:context="http://www.springframework.org/schema/context"
      xmlns:mvc="http://www.springframework.org/schema/mvc"
      xsi:schemaLocation="http://www.springframework.org/schema/beans 
      http://www.springframework.org/schema/beans/spring-beans.xsd 
      http://www.springframework.org/schema/context 
      http://www.springframework.org/schema/context/spring-context.xsd 
      http://www.springframework.org/schema/mvc 
      http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <context:component-scan base-package="com.littlepage"></context:component-scan>
</beans>

context:component-scan 表示扫描package，扫描com.littlepage包下的package

2.关于目录结构

3.测试层开始，测试层模拟入口，也就是类似的jsp提交

package com.littlepage.test;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.littlepage.controller.LoginController;

public class Main {
    public static void main(String[] args) {
        ClassPathXmlApplicationContext cpx=new ClassPathXmlApplicationContext("applicationContext.xml");
        LoginController loginController = cpx.getBean("loginController",LoginController.class);
        boolean isLogin=loginController.testLogin("root", "root");
        if(isLogin) {
            System.out.println("Login Success");
        }else {
            System.out.println("Login Failed");
        }
        cpx.close();
    }
}

4.与jsp相连的层是controller层，从controller层开始接入service层，这边是controller层的内容

package com.littlepage.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;

import com.littlepage.service.LoginService;

@Controller
public class LoginController {
    
    @Autowired
    private LoginService loginService;
    
    public boolean testLogin(String name,String password) {
        return loginService.testLogin(name,password);
    }
}

5.关于service层的验证

package com.littlepage.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.littlepage.dao.GetNameAndPassword;
import com.littlepage.pojo.User;

@Service
public class LoginService {

    @Autowired
    GetNameAndPassword getNameAndPassword;
    
    public boolean testLogin(String name, String password) {
        User user=getNameAndPassword.getUser();
        if(user.getName().equals(name)&&user.getPassword().equals(password)) return true;
        return false;
    }
    
}

6.service层与dao层连，dao有一个orm映射，与pojo层相连

package com.littlepage.dao;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;

import com.littlepage.pojo.User;

@Repository
public class GetNameAndPassword {
    
    @Autowired
    private User user;


    public User getUser() {
        return user;
    }
}

7.pojo层注意，是一个prototype的scope，属性用@Value进行赋值

package com.littlepage.pojo;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;

@Component
@Scope("prototype")
public class User {
    
    @Value("root")
    private String name;
    @Value("root")
    private String password;
    
    public User() {
    }

    public User(String name, String password) {
        super();
        this.name = name;
        this.password = password;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    
    
}

8.运行，测试结果无误