初学SSM实现简单登录注册实例

初学SSM试着做了个登录注册实例检验一下，顺便把代码搬上来了
废话不多说直接撸
数据库版本：mysql-8.0.13(版本较高，jar包和一些语法会有出入)
开发工具：Eclipse

整体结构

libs

不是全部的包都要用到，当时图省事就全弄进来了

数据表

俩字段，很简单，只是方便测试

CREATE TABLE test (
  name varchar(20) NOT NULL,
  pwd varchar(20) DEFAULT NULL,
  PRIMARY KEY (`name`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

web.xml配置

	b8_c301
	
    
       
           contextConfigLocation
       
       
           classpath:applicationContext.xml
       
   
   
   
       
            org.springframework.web.context.ContextLoaderListener
        
    
    
    
    
    
    springmvc
    org.springframework.web.servlet.DispatcherServlet
    1
    
    
    
    springmvc
    *.action
    
    
  	
  		CharacterEncodingFilter
  		org.springframework.web.filter.CharacterEncodingFilter
  		
  			encoding
  			utf-8
  		
  	
  	
  		CharacterEncodingFilter
  		/*
  	
	
		index.html
		index.htm
		index.jsp
		default.html
		default.htm
		default.jsp
	

applicationContext.xml配置

	
	
	
	
	
		//注意数据库版本
		//注意数据库版本，8.0版本中url要设置时区，并且xml配置文件中要使用“&”来代替“&”
		
		
		
		
		
		
		
		
	
	
	
		
		
		
		//直接加载的sql映射文件，省去配置mybatis-config.xml的步骤
	
	
	
		
	

	
	
		
	
	
	

springmvc-servlet.xml

UserController

package com.cn.controller;



import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import com.cn.entiy.User;
import com.cn.service.UserService;

@Controller
@RequestMapping("/user")
public class UserController {
	@Autowired
	private UserService userService;

	@RequestMapping("/golog")
	public String golog() {
		return "login";
	}
	@RequestMapping("/goreg")
	public String goreg() {
		return "register";
	}
	@RequestMapping("/register")
	public String login(User user) {
		userService.saveUser(user);
		return "succ";
	}
	@RequestMapping("/login")
	public String register(String name,String pwd) {
		User user=userService.findUser(name, pwd);
		if(user!=null) {
			return "succ";
		}else {
			return "fail";
		}
	}
}

UserMapper

package com.cn.dao;

import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Repository;
import com.cn.entiy.User;

@Repository
@Mapper
public interface UserMapper {
	void saveUser(User user);

	User findUser(@Param("name")String name,@Param("pwd")String pwd);
}

UserMapepr.xml

	
	
		insert into test (name,pwd) values (#{name},#{pwd})
	
	
	
	select  * from test where name=#{name} and pwd=#{pwd}
	

User

package com.cn.entiy;

public class User {
	private String name;
	private String pwd;
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getPwd() {
		return pwd;
	}
	public void setPwd(String pwd) {
		this.pwd = pwd;
	}
	@Override
	public String toString() {
		return "User [name=" + name + ", pwd=" + pwd + "]";
	}
	
}

UserService

package com.cn.service;

import org.springframework.stereotype.Service;
import com.cn.entiy.User;

public interface UserService {
	void saveUser(User user);
	User findUser(String name, String pwd);
}

UserServiceImpl

package com.cn.service;

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

import com.cn.dao.UserMapper;
import com.cn.entiy.User;
@Service("userService")
@Transactional
public class UserServiceImpl implements UserService {
	@Autowired
	private UserMapper userMapepr;
	@Override
	public void saveUser(User user) {
		// TODO Auto-generated method stub
		userMapepr.saveUser(user);
	}
	@Override
	public User findUser(String name, String pwd) {
		// TODO Auto-generated method stub
		return userMapepr.findUser(name, pwd);
	}
}

login.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>







	

		用户名: 密码: 
	

register.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>







	

	用户名:
	密码:
	
	

succ.jsp和fail.jsp随便写点测试文字就行了，我就不沾上来了

将项目部署到tomcat上发布，然后在浏览器中输入以下地址，会有以下注册界面(密码框的格式为text，所以是明文)出现，点击提交会返回succ.jsp

在浏览器中输入以下地址，会有如下登录界面，点击提交如果匹配数据库返回succ.jsp，未匹配则返回fail.jsp

最后贴一个为什么要在spring中扫描service,在springmvc中扫描controller的贴

2019年11月22日更新

此版本为初学时搭建的，源码已经丢失，附上新的重构版本