SpringBoot实现简单的登录注册的项目实战

本文主要介绍了SpringBoot实现简单的登录注册的项目实战，文中通过示例代码介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们可以参考一下

目录

• 第一步：建立简单的项目
• 第二步：建一个简单的数据表
• 第三步：配置文件如下：

第一步：建立简单的项目

第二步：建一个简单的数据表

• 数据库安装和初始化

第三步：配置文件如下：

pom.xml文件配置：

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<?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>2.6.7</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.wei</groupId> <artifactId>springbootdemo</artifactId> <version>0.0.1-SNAPSHOT</version> <name>springbootdemo</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-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>2.2.2</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <excludes> <exclude> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> </exclude> </excludes> </configuration> </plugin> </plugins> </build> </project>

 application.properties文件配置：

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#改变端口号: server.port=8085 #给整个项目加个前缀,多个项目就不会重复： #server.servlet.context-path=/first #school.grade=3 #school.classNum=4 spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver spring.datasource.password=123456 spring.datasource.username=root spring.datasource.url=jdbc:mysql://localhost:3306/demo?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8&useSSL=true spring.thymeleaf.prefix=classpath:/templates/ #mapper.mappers=tk.mybatis.mapper.common.Mapper #mapper.not-empty=true 项目目录如下：

LoginController.java文件：

注意：@Controller只能用这个，不能用@RestController

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package com.wei.springbootdemo.controller; import com.wei.springbootdemo.entity.UserBean; import com.wei.springbootdemo.service.UserService; import lombok.extern.slf4j.Slf4j; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import javax.annotation.Resource; @Slf4j @Controller public class LoginController { //将Service注入Web层 @Resource UserService userService; //实现登录 @RequestMapping("/login") public String show(){ return "login"; } @RequestMapping(value = "/loginIn", method = RequestMethod.POST) public String login(String name, String password){ UserBean userBean = userService.LoginIn(name, password); log.info("name:{}",name); log.info("password:{}",password); if(userBean!=null){ return "success"; }else { return "error"; } } @RequestMapping("/signup") public String disp(){ return "signup"; } //实现注册功能 @RequestMapping(value = "/register", method = RequestMethod.POST) public String signUp(String name, String password){ userService.Insert(name, password); return "success"; } }

UserBean.java文件

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package com.wei.springbootdemo.entity; import java.io.Serializable; public class UserBean implements Serializable { private Integer id; private String name; private String password; public Integer getId() { return id; } public void setId(Integer 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; } }

UserMapper接口文件：

注意：我在这里为偷懒，开始加入了@Mapper注解，目的就是为了不再写mapper映射文件（那个xml写的是真的是太慢了）

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package com.wei.springbootdemo.mapper; import com.wei.springbootdemo.entity.UserBean; import org.apache.ibatis.annotations.Insert; import org.apache.ibatis.annotations.Mapper; import org.apache.ibatis.annotations.Param; import org.apache.ibatis.annotations.Select; @Mapper public interface UserMapper { //查询，可以实现登录功能 @Select("SELECT * FROM user WHERE name = #{name} AND password = #{password}") UserBean getInfo(@Param("name") String name, @Param("password") String password); //多个参数要加@Param修饰 //增加，可以实现注册功能 @Insert("insert into user(name,password)values(#{name},#{password})") void saveInfo(@Param("name") String name, @Param("password") String password); }

UserService.java文件

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package com.wei.springbootdemo.service; import com.wei.springbootdemo.entity.UserBean; import com.wei.springbootdemo.mapper.UserMapper; import org.springframework.stereotype.Service; import javax.annotation.Resource; @Service public class UserService { //将dao层属性注入service层 @Resource private UserMapper userMapper; public UserBean LoginIn(String name, String password) { return userMapper.getInfo(name, password); } public void Insert(String name, String password) { userMapper.saveInfo(name, password); } }

下面都是一些静态html网页：

下面就把所有的代码按顺序依次放在一个框子里面;

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<!--登录失败页面--> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>error</title> </head> <body> <h1>登录失败！</h1> </body> </html>                  <!--index页面--> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>index</title> </head> <body> <h1>你好啊！</h1> </body> </html>          <!--登录页面-->    <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>login</title> </head> <body> <form role="form" action="/loginIn" method="post"> 账号：<input type="text" id="name" name="name"> <br> 密码：<input type="password" id="password" name="password"> <br> <input type="submit" id="login" value="login"> </form> <form role="form1" action="/signup" method="post"> <input type="submit" id="register" value="注册"> </form> </body> </html>          <!--注册页面--> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>注册成功</title> </head> <body> <form role="form" action="/register" method="post"> 请输入姓名:<input type="text" name="name" id="name"><br> 请输入密码：<input type="password" name="password" id="password"><br> <input type="submit" name="sign" value="提交"> </form> </body> </html>            <!--成功页面--> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>success</title> </head> <body> <h1>欢迎，恭喜登录成功/注册成功！</h1> </body> </html>

最后登录效果展示：

注册效果展示：

注册成功！数据库更新成功！