public class User {
private int id;
private String name;
}
public interface UserDao {
User getUserById(int id);
void addUser(User user);
void updateUser(User user);
void deleteUser(int id);
}
<?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.example.dao.UserDao">
<resultMap id="userResultMap" type="com.example.model.User">
<id property="id" column="id"/>
<result property="name" column="name"/>
</resultMap>
<select id="getUserById" resultMap="userResultMap">
SELECT * FROM user WHERE id = #{id}
</select>
</mapper>
