java

关注公众号 jb51net

关闭
首页 > 软件编程 > java > SpringBoot+MyBatis+MySql动态登录与注册

IDEA下创建SpringBoot+MyBatis+MySql项目实现动态登录与注册功能

作者:孙不坚1208

这篇文章主要介绍了IDEA下创建SpringBoot+MyBatis+MySql项目实现动态登录与注册功能,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面随着小编来一起学习学习吧

一、搭建SpringBoot项目

1.1、file ——> new ——> project——> Spring Initializr——> next——> next——> next——> finish

注意选择包依赖关系

在这里插入图片描述

二、springboot整合mybatis.mysql

2.1、整体结构

在这里插入图片描述

2.2、设置所需要的依赖

即pom.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 <modelVersion>4.0.0</modelVersion>
 <parent>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-parent</artifactId>
 <version>2.4.2</version>
 <relativePath/> <!-- lookup parent from repository -->
 </parent>
 <groupId>springboot-web04</groupId>
 <artifactId>demo</artifactId>
 <version>0.0.1-SNAPSHOT</version>
 <name>demo</name>
 <description>Demo project for Spring Boot</description>
 <properties>
 <java.version>1.8</java.version>
 </properties>
 <dependencies>
 <dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-data-jdbc</artifactId>
 </dependency>
 <dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-jdbc</artifactId>
 </dependency>
 <dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-thymeleaf</artifactId>
 </dependency>
 <dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-web</artifactId>
 </dependency>

 <dependency>
 <groupId>mysql</groupId>
 <artifactId>mysql-connector-java</artifactId>
 <scope>runtime</scope>
 </dependency>
 <dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-test</artifactId>
 <scope>test</scope>
 </dependency>
<!--下面的都是我加的-->
 <dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-jdbc</artifactId>
 </dependency>
 <dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-thymeleaf</artifactId>
 </dependency>
 <dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-web</artifactId>
 </dependency>

 <dependency>
 <groupId>org.mybatis.spring.boot</groupId>
 <artifactId>mybatis-spring-boot-starter</artifactId>
 <version>2.1.3</version>
 </dependency>

 <dependency>
 <groupId>mysql</groupId>
 <artifactId>mysql-connector-java</artifactId>
 </dependency>

 <dependency>
 <groupId>org.projectlombok</groupId>
 <artifactId>lombok</artifactId>
 <version>1.18.12</version>
 <scope>provided</scope>
 </dependency>

 <dependency>
 <groupId>com.alibaba</groupId>
 <artifactId>druid</artifactId>
 <version>1.2.1</version>
 </dependency>

 <dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-test</artifactId>
 <scope>test</scope>
 <exclusions>
 <exclusion>
 <groupId>org.junit.vintage</groupId>
 <artifactId>junit-vintage-engine</artifactId>
 </exclusion>
 </exclusions>
 </dependency>
 <dependency>
 <groupId>org.xmlunit</groupId>
 <artifactId>xmlunit-core</artifactId>
 </dependency>
 <dependency>
 <groupId>org.mybatis</groupId>
 <artifactId>mybatis</artifactId>
 <version>3.4.6</version>
 </dependency>
 </dependencies>

 <build>
 <plugins>
 <plugin>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-maven-plugin</artifactId>
 </plugin>
 </plugins>
 </build>

</project>

2.3、设置application.yml文件与pplication.properties文件

在resources目录下新建yml文件,用于存放数据库连接需要的一些数据

spring:
 datasource:
 driver-class-name: com.mysql.cj.jdbc.Driver
 url: jdbc:mysql://localhost:3306/mybatis?serverTimezone=GMT%2B8&useSSL=true
 username: root //数据库
 password: sm1208 //密码

在application.properties文件中加入

#端口号
server.port=8080
#druid数据库连接池
type=com.alibaba.druid.pool.DruidDataSource
#清除缓存
spring.thymeleaf.cache=false
#配置mapper
mybatis.mapper-locations=classpath:mapper/*.xml

2.4、在pojo下的新建类UserLogin

package springbootweb04.demo.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor

public class UserLogin {
 private String username;
 private String password;

 public String getUsername() {
 return username;
 }
}

2.5、新建数据库,名为mybatis,创建用户表,名为userLogin,创建username、password字段

2.5.1、数据库名可以随意,不过要与application.yml文件中的一致

在这里插入图片描述

2.5.2、IDEA中连接数据库

Database——> +——> Data Source——> Mysql

在这里插入图片描述

在这里插入图片描述

2.6、mapper层

新建UserLoginMapper接口

package springbootweb04.demo.mapper;

import org.apache.ibatis.annotations.Mapper;
import org.springframework.stereotype.Repository;
import springbootweb04.demo.pojo.UserLogin;

import java.util.List;

@Mapper
@Repository
public interface UserLoginMapper {
 //查询
 public List<UserLogin> queryAll();
 //添加数据
 public int add(UserLogin userLogin);
 //根据用户名查询数据
 public UserLogin queryByName(String username);
}

2.7、resources目录下的mapper目录

在resources目录下新建mapper目录,并在这个目录下新建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="springbootweb04.demo.mapper.UserLoginMapper">
 <select id="queryAll" resultType="springbootweb04.demo.pojo.UserLogin">
 select * from userLogin
 </select>

 <insert id="add" parameterType="springbootweb04.demo.pojo.UserLogin">
 insert into userLogin values (#{username},#{password})
 </insert>

 <select id="queryByName" resultType="springbootweb04.demo.pojo.UserLogin">
 select * from userLogin where username = #{username}
 </select>

</mapper>

2.8、测试

在test.Java.springbootweb04.demo类中,测试是否能联通数据库,没有报错说明成功。

package springbootweb04.demo;

import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import springbootweb04.demo.mapper.UserLoginMapper;
import springbootweb04.demo.pojo.UserLogin;
import org.springframework.beans.factory.annotation.Autowired;


import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.List;

@SpringBootTest
class DemoApplicationTests {
 @Autowired
 DataSource dataSource;
 @Test
 void contextLoads() throws SQLException {
 System.out.println(dataSource.getClass());
 Connection connection = dataSource.getConnection();
 System.out.println(connection);

 //template模板,拿来即用
 connection.close();
 }
 @Autowired
 UserLoginMapper userLoginMapper;
 @Test
 public void toTest(){
 List<UserLogin> userLogins = userLoginMapper.queryAll();
 userLogins.forEach(e-> System.out.println(e));
 }
}

2.9、services层

在services下新建接口UserLoginServicesI和类UserLoginServicesImpl

UserLoginServicesI接口:

package springbootweb04.demo.services;

import springbootweb04.demo.pojo.UserLogin;

import java.util.List;

public interface UserLoginServicesI {
 //查询
 public List<UserLogin> queryAll();
 //添加数据
 public int add(UserLogin userLogin);
 //根据用户名查询数据
 public UserLogin queryByName(String username);
}

UserLoginServicesImpl类

package springbootweb04.demo.services;

import springbootweb04.demo.mapper.UserLoginMapper;
import springbootweb04.demo.pojo.UserLogin;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class UserLoginServicesImpl implements UserLoginServicesI {

 @Autowired
 UserLoginMapper userLoginMapper;
 @Override
 public List<UserLogin> queryAll() {
 return userLoginMapper.queryAll();
 }

 @Override
 public int add(UserLogin userLogin) {
 return userLoginMapper.add(userLogin);
 }

 @Override
 public UserLogin queryByName(String username) {
 return userLoginMapper.queryByName(username);
 }
}

2.A、conteoller层

编写MyController类

package springbootweb04.demo.controller;

import springbootweb04.demo.pojo.UserLogin;
import springbootweb04.demo.services.UserLoginServicesImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class MyController {
 @Autowired
 UserLoginServicesImpl userLoginServicesImpl;

 @RequestMapping("/toLogin")
 public String toLogin(){
 return "login";
 }

 @RequestMapping("/LoginSuccess")
 public String LoginSuccess(Model model, UserLogin userLogin){
 //先查询看该用户名是否存在
 UserLogin userLogin1 = userLoginServicesImpl.queryByName(userLogin.getUsername());
 if(userLogin1 != null){ // 如果查询的用户不为空
 System.out.println(userLogin1.toString());
 return "success";
 }
 else{
 //返回到登录页面
 model.addAttribute("data","该用户不存在,请先注册");
 return "login";
 }
 }
 //登录界面
 @RequestMapping("/toRegister")
 public String toRegister(){
 return "register";
 }
 @RequestMapping("/RegisterSuccess")
 public String toRegisterSuccess(Model model,UserLogin userLogin){
 //将账号密码加入到数据库中
 int add = userLoginServicesImpl.add(userLogin);
 System.out.println("数据插入成功!");
 model.addAttribute("data","注册成功,请登录!");
 return "login";
 }
}

三、编写前端页面

将以下三个页面放在templates下面

login.html:登录页面

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
 <meta charset="UTF-8">
 <title>Title</title>
</head>
<body style="background: aqua">
<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>

register.html:注册页面

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
 <meta charset="UTF-8">
 <title>Title</title>
</head>
<body style="background: aqua">
<div align="center">
 <br><br>注册界面<br><br>
 <form method="get" action="/RegisterSuccess">
 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:成功界面

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>Title</title>
</head>
<body>

</body>
</html>

四、运行测试

:localhost:8080/toLogin

到此这篇关于IDEA下创建SpringBoot+MyBatis+MySql项目实现动态登录与注册功能的文章就介绍到这了,更多相关SpringBoot+MyBatis+MySql动态登录与注册内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!

您可能感兴趣的文章:
阅读全文