springboot mybatis-plus实现登录接口

<dependencies>
    <!-- SpringBoot -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <!-- Mybatis Plus -->
    <dependency>
        <groupId>com.baomidou</groupId>
        <artifactId>mybatis-plus-boot-starter</artifactId>
        <version>3.4.0</version>
    </dependency>

    <!-- 数据库驱动 -->
    <dependency>
        <groupId>com.h2database</groupId>
        <artifactId>h2</artifactId>
        <version>1.4.199</version>
    </dependency>

    <!-- 其他依赖... -->
</dependencies>

@Data
@EqualsAndHashCode(callSuper = false)
@Accessors(chain = true)
public class User implements Serializable {
    private static final long serialVersionUID = 1L;

    private Long id;
    private String name;
    private String pwd;
}

public interface UserMapper extends BaseMapper<User> {
}

spring.datasource.url=jdbc:h2:mem:test
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=sa
spring.datasource.password=

mybatis-plus.mapper-locations=classpath*:mapper/**/*.xml
mybatis-plus.type-aliases-package=com.example.demo.entity
mybatis-plus.configuration.map-underscore-to-camel-case=true

@RestController
public class UserController {

    @Autowired
    private UserMapper userMapper;

    @PostMapping("/login")
    public String login(@RequestBody User user) {
        QueryWrapper<User> wrapper = new QueryWrapper<>();
        wrapper.eq("name", user.getName()).eq("pwd", user.getPwd());
        User dbUser = userMapper.selectOne(wrapper);
        if (dbUser != null) {
            return "登录成功";
        } else {
            return "登录失败，用户名或密码错误";
        }
    }
}

curl -X POST -H "Content-Type: application/json" -d '{"name":"admin","pwd":"123456"}' http://localhost:8080/login