6.SpringBoot整合mybatis实现登录

本章带大家使用springboot + mybaits整合，实现一个简单的登录实例

准备：

1.安装mysql

2.创建springboot数据库

3.创建s_user表

DROP TABLE IF EXISTS `s_user`;
CREATE TABLE `s_user` (
  `_id` int(11) NOT NULL AUTO_INCREMENT,
  `nickname` varchar(30) DEFAULT NULL,
  `password` varchar(30) DEFAULT NULL,
  `create_time` bigint(20) DEFAULT NULL,
  PRIMARY KEY (`_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

这里创建用户表user，加前戳s_其意义是区分系统表和具体事务表，在此项目中使用到的前戳有：

前戳	全称	描述
s_	system	系统表前戳
b_	business	事务表前戳

1.创建User数据库表映射实体类

@Data
public class User {
    private int _id;
    private String nickname;
    private String password;
    private long create_time;
}

注意字段名和变量名保持一致

2.创建UserDao类

扫描二维码关注公众号，回复： 1892163 查看本文章

@Mapper
public interface UserDao {
    User login(@Param("nickname") String nickname, @Param("password")String password);
}

3.创建service

@Slf4j
@Service
public class UserService {

    @Autowired
    private UserDao mUserDao;
    
    public LoginRPTO login(LoginRQTO login){
        User user = mUserDao.login(login.getNickname(),login.getPassword());
        if(user == null){
            return null;
        }
        LoginRPTO rpto = new LoginRPTO();
        rpto.setUser_id(user.get_id());
        rpto.setNickname(login.getNickname());
        return rpto;
    }
}

4.修改UserController

@Controller
@RequestMapping("/user")
public class UserController {

    @Autowired
    private UserService mUserService;

    @ResponseBody
    @RequestMapping(value = "/login",method = RequestMethod.POST)
    public RPTO login(@RequestBody @Valid LoginRQTO login) {
        LoginRPTO rpto = mUserService.login(login);
        if(rpto == null){
            return new RPTO<>("用户名密码错误");
        }
        return new RPTO<>(ActionCode.SUCCESS,rpto);
    }
}

5.在resource目录下创建mapper目录，并新建UserMapper.xml

<?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="com.fcibook.springboot.dao.UserDao">
    <select id="login" resultType="com.fcibook.springboot.core.system.User">
        SELECT * FROM s_user WHERE nickname = #{nickname} and password = #{password}
    </select>
</mapper>

6.修改application.properties

server.port=8080

#日志配置
logging.level.root=warn
logging.level.com.fcibook.springboot=DEBUG
#springframework.web日志以DEBUG级别输出
logging.level.org.springframework.web=warn
#hibernate日志以ERROR级别输出
logging.level.org.hibernate=warn
logging.file=/logs/my.log
logging.pattern.console=%d{yyyy/MM/dd-HH:mm:ss} [%thread] %-5level %logger- %msg%n
logging.pattern.file=%d{yyyy/MM/dd-HH:mm} [%thread] %-5level %logger- %msg%n

#数据库配置
spring.datasource.driverClassName = com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/springboot?useUnicode=true&characterEncoding=utf-8
spring.datasource.username=root
spring.datasource.password=123456

#配置.xml文件路径
mybatis.mapper-locations=classpath:mapper/*.xml
#配置模型路径
mybatis.type-aliases-package=com.fcibook.springboot.dao

7.运行，测试

在数据库中，手动添加一条记录

然后打开网址

http://localhost:8080/login.html

登录测试成功!

但是值得一提的是mybatis有多种方法来操作数据库，我们访问mybatis官网

http://www.mybatis.org/mybatis-3/zh/getting-started.html

看到如下文档解释：

----------------------------------------------------------------------

源码下载

6.SpringBoot整合mybatis实现登录

猜你喜欢