基于springboot和mybatis框架实现登录注册功能返回json
刚学springboot仅用于记录学习
开发环境
- 开发工具：idea2019.3
- jdk：1.8
- 数据库：mysql5.7
- springboot：2.2.6
- postman
数据库表
DROP TABLE IF EXISTS `usermessage`;
CREATE TABLE `usermessage` (
`id` int(20) NOT NULL AUTO_INCREMENT,
`username` varchar(255) COLLATE utf8_unicode_ci DEFAULT NULL,
`password` varchar(255) COLLATE utf8_unicode_ci DEFAULT NULL,
`address` varchar(255) COLLATE utf8_unicode_ci DEFAULT NULL,
`phone` varchar(11) COLLATE utf8_unicode_ci DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM AUTO_INCREMENT=15 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
idea 新建项目
新建springboot initializr项目
项目新建完成后增加gson等依赖到pom.xml
<?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>2.2.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.glc</groupId>
<artifactId>login-register</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>login-register</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-web</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.1.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.8
</version>
</dependency>
<!-- 添加Gson依赖 -->
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
</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>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
项目结构目录
applocation.yml
spring:
datasource:
# 数据源基本配置
username: root
password: 123456
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost:3306/mybatis?useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC
type: com.alibaba.druid.pool.DruidDataSource
# 数据源其他配置
initialSize: 5
minIdle: 5
maxActive: 20
maxWait: 60000
timeBetweenEvictionRunsMillis: 60000
minEvictableIdleTimeMillis: 300000
validationQuery: SELECT 1 FROM DUAL
testWhileIdle: true
testOnBorrow: false
testOnReturn: false
poolPreparedStatements: true
# 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙
filters: stat,wall,log4j
maxPoolPreparedStatementPerConnectionSize: 20
useGlobalDataSourceStat: true
connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500
entity实体
结果实体类
public class Result<T> {
private String msg;
private boolean success;
private T detail;
//省略getter和setter方法
}
用户实体类
public class User {
private Long id;
private String username;
private String password;
private String address;
private String phone;
//省略getter和setter方法
}
UserMapper
@Mapper
@Repository
public interface UserMapper {
/**
*查看用户名是否已经存在
* @param username
* @return
*/
@Select("select u.username,u.password from usermessage u where u.username=#{username}")
User findUserByName(@Param("username") String username);
@Select("SELECT * FROM usermessage WHERE id=#{id}")
User findUserById(@Param("id") Long id);
/**
* 注册
* @param user
*/
@Insert("insert into usermessage values(#{id},#{username},#{password},#{address},#{phone})")
@Options(useGeneratedKeys = true,keyProperty = "id",keyColumn = "id")
void register(User user);
/**
* 登录
* @param user
* @return
*/
@Select("select u.id from usermessage u where u.username=#{username} and password=#{password}")
Long login(User user);
}
UserService
@Service
public class UserService {
@Autowired
private UserMapper userMapper;
/**
* 注册
* @param user
* @return
*/
public Result rgister(User user){
Result result=new Result();
result.setSuccess(false);
result.setDetail(null);
try {
User userByName = userMapper.findUserByName(user.getUsername());
if(userByName!=null){
//如果查询到 说明存在
result.setMsg("用户名存在");
}else {
userMapper.register(user);
result.setMsg("注册成功");
result.setSuccess(true);
result.setDetail(user);
}
}catch (Exception e){
result.setMsg(e.getMessage());
e.printStackTrace();
}
return result;
}
/**
* 登录
*/
public Result login(User user){
Result result=new Result();
result.setSuccess(false);
result.setDetail(null);
try {
Long userId = userMapper.login(user);
if(userId==null){
result.setMsg("用户名或密码错误");
}else {
result.setMsg("登录成功");
result.setSuccess(true);
user.setId(userId);
User userById = userMapper.findUserById(userId);
result.setDetail(userById);
}
}catch (Exception e){
result.setMsg(e.getMessage());
e.printStackTrace();
}
return result;
}
}
UserController
@RestController
@RequestMapping("user")
public class UserController {
@Autowired
private UserService userService;
/**
* 注册
* @param user
* @return
*/
@PostMapping("/register")
public Result register(@RequestBody User user){
return userService.rgister(user);
}
@PostMapping("/login")
public Result login(@RequestBody User user){
return userService.login(user);
}
}
postman软件测试
测试注册
第一次注册，可以看到注册成功，数据库中已添加注册信息
相同的用户名再次注册提示用户名存在
测试登录
输入错误的密码 提示密码错误
在输入正确的密码，可以看到登录成功
