1.创建一个SpringBoot项目
2.创建表
create database login; use login; create table userlogin(username varchar(49),password varchar(49))
3.idea连接mysql
4. 创建实体类UserLogin
@Data@AllArgsConstructor@NoArgsConstructor@Table(name = "userlogin")/* <dependency> <groupId>javax.persistence</groupId> <artifactId>persistence-api</artifactId> <version>1.0</version> </dependency>*/public class UserLogin { private String username; private String password;}
5.创建mapper。数据持久层UserLoginMapper接口
@Mapper@Repositorypublic interface UserLoginMapper { //定义增删改查方法 //查询所有 public List<UserLogin> queryAll(); //添加数据 public int add(UserLogin userLogin); //根据用户名查询 public UserLogin queryByUsername(String username);}
6.在resources下建UserLoginMapper.xml文件
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"><mapper namespace="自己的mapper接口"> <select id="queryAll" resultType="自己的实体类接口"> select * from userlogin </select> <insert id="add" parameterType="自己的实体类接口"> insert into userlogin values (#{username},#{password}) </insert> <select id="queryByUsername" resultType="自己的实体类接口"> select * from userlogin where username=#{username} </select></mapper>
7.编写UserLogService接口
public interface UserLonginService { public interface UserLoginServicesl { //查询所有 public List<UserLogin> queryAll(); //添加数据 public int add(UserLogin userLogin); //根据用户名查询 public UserLogin queryByUsername(String username); }}
8.编写控制层MyController
@Controllerpublic class MyController { //controller层调用service层 //创建一个service层对象 @Autowired UserLoginServicesImpl userLoginServices; //登录 @RequestMapping("/toLogin") public String toLogin() { return "login"; } @RequestMapping("/loginSuccess") public String loginSuccess(Model model, UserLogin userLogin) { //查询用户名是否存在 UserLogin userLogin1 = userLoginServices.queryByUsername(userLogin.getUsername()); if (userLogin1 != null) { //如果用户名存在 if (userLogin1.getPassword().equals(userLogin.getPassword())) { System.out.println(userLogin1.toString()); return "success"; } else { model.addAttribute("data", "密码不正确"); return "login"; } } else { //用户名不存在，直接返回到登录页面 model.addAttribute("data", "该用户不存在，请先注册"); return "login"; } } //注册 @RequestMapping("/toRegister") public String toRegister() { return "register"; } @RequestMapping("/toRegisterSuccess") public String toRegisterSuccess(Model model,UserLogin userLogin) { //添加一条记录到数据库中 int add = userLoginServices.add(userLogin); System.out.println("插入数据成功"); model.addAttribute("data","注册成功，请登录"); return "login"; }}
9.前端页面
10.login.html 登录的页面
<!DOCTYPE html><html lang="en" xmlns:th="http://www.thymeleaf.org"><head> <meta charset="UTF-8"> <title>login</title></head><body background="back.jpg"><div align="center"> <br><br><h2>登录界面</h2><br><br> <span th:text="${data}" style="text-color:red;font-size: 10px"></span> <form method="get" action="/loginSuccess"> 用户名:<input type="text" name="username" placeholder="请输入用户名" required/><br><br> 密码：<input type="text" name="password" placeholder="请输入密码" required/><br><br> <input type="submit" value="登录"> </form> <br> <form method="get" action="/toRegister"> <input type="submit" value="注册"> </form></div></body></html>
11.注册界面
<!DOCTYPE html><html lang="en" xmlns:th="http://www.thymeleaf.org"><head> <meta charset="UTF-8"> <title>register</title></head><body background="back.jpg" ><div align="center"> <br><br><h1>注册界面</h1><br><br> <form method="get" action="/toRegisterSuccess"> 用户名:<input type="text" name="username" placeholder="请输入用户名" required/><br><br> 密码：<input type="text" name="password" placeholder="请输入密码" required/><br><br> 确认密码：<input type="text" name="password2" placeholder="请输入密码" required/><br><br> <input type="submit" value="注册"> </form></div></body></html>
success.html：成功页面
以上就是SpringBoot+MyBatis登录案例的详细内容，更多关于SpringBoot MyBatis登录的资料请关注其它相关文章！
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