@Insert("INSERT INTO USER(NAME, AGE) VALUES(#{name}, #{age})")
int insert(@Param("name") String name, @Param("age") Integer age);

Map<String, Object> map = new HashMap<>();
map.put("name", "CCC");
map.put("age", 40);
userMapper.insertByMap(map);

@Insert("INSERT INTO USER(NAME, AGE) VALUES(#{name,jdbcType=VARCHAR}, #{age,jdbcType=INTEGER})")
int insertByMap(Map<String, Object> map);

@Insert("INSERT INTO USER(NAME, AGE) VALUES(#{name}, #{age})")
int insertByUser(User user);

@Results({
    @Result(property = "name", column = "name"),
    @Result(property = "age", column = "age")
})
@Select("SELECT name, age FROM user")
List<User> findAll();

public interface UserMapper {
    @Select("SELECT * FROM user WHERE name = #{name}")
    User findByName(@Param("name") String name);
    @Insert("INSERT INTO user(name, age) VALUES(#{name}, #{age})")
    int insert(@Param("name") String name, @Param("age") Integer age);
    @Update("UPDATE user SET age=#{age} WHERE name=#{name}")
    void update(User user);
    @Delete("DELETE FROM user WHERE id =#{id}")
    void delete(Long id);
}