Server/iwb-iot-project/src/main/java/com/iwbnet/iot/mapper/UserMapper.java

package com.iwbnet.iot.mapper;

import com.iwbnet.iot.entity.User;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;

@Mapper
public interface UserMapper {


    @Select("select * from t_user where username = #{username}")
    public User selectUserByUsername(String username);
}