Spring+Spring MVC+Spring JDBC+MySql实现简单登录注册

Model层：

package com.model;

public class User {
    private int id;
    private String name;
    private String password;
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    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;
    }

}

UserDao:

package com.userdao;

public interface UserDao {
        public boolean check(String name,String passwod);
        public void addUser(String name,String password);
        public boolean unit(String name);
}

UserDaoImpl:

package com.userdaoimpl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;

import com.userdao.UserDao;

@Repository
public class UserDaoImpl implements UserDao{

    @Autowired
    JdbcTemplate jdbcTemplate;

    public JdbcTemplate getJdbcTemplate() {
        return jdbcTemplate;
    }

    public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {
        this.jdbcTemplate = jdbcTemplate;
    }

    @Override
    public boolean check(String name, String passwod) {
        String sql = "select count(id) from u2 where name=? and password=?";
        int i  = jdbcTemplate.queryForInt(sql, new Object[]{name,passwod});
        if (i>0) {
            return true;
        } else {
            return false;
        }
    }

    @Override
    public void addUser(String name, String password) {
            String sql = "insert into u2 (name,password) values(?,?)";
            jdbcTemplate.update(sql,new Object[]{name,password});
    }

    @Override
    public boolean unit(String name) {
        String sql = "select count(id) from u2 where name=?";
        int rs = jdbcTemplate.queryForInt(sql,new Object[]{name});
        if (rs>0) {
            return true;
        }
        return false;
    }

}

Controller层：

package com.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.userdaoimpl.UserDaoImpl;

@Controller
public class LoginController {

    @Autowired
    UserDaoImpl userDaoImpl;

    public UserDaoImpl getUserDaoImpl() {
        return userDaoImpl;
    }

    public void setUserDaoImpl(UserDaoImpl userDaoImpl) {
        this.userDaoImpl = userDaoImpl;
    }

    @RequestMapping("/login")
    public String login(String name,String password,Model model) {
            boolean rs = userDaoImpl.check(name, password);
            if (rs==true) {
                model.addAttribute("name",name);
                return "index";
            } 
            return "error";
    }
    @RequestMapping("/register")
    public String register(String name,String password,Model model) {
        boolean rs = userDaoImpl.unit(name);
        if (rs==false) {
            userDaoImpl.addUser(name, password);
            return "login";
        } 
        return "error1";
    }

}

Spring配置文件：

Web.XMl:

   
  
    login.jsp
  
    
    spring
    org.springframework.web.servlet.DispatcherServlet
    
        contextConfigLocation
        classpath:applicationContext.xml
    
  
  
    spring
    /
  
  
  
    encoding
    org.springframework.web.filter.CharacterEncodingFilter
    
        encoding
        UTF-8
    
  

  
    encoding
    *.do