mybatis映射文件操作存储过程的实现

DELIMITER $$
CREATE PROCEDURE
getUserNameById (IN i_id BIGINT, OUT o_name VARCHAR(10))
BEGIN
    SELECT u.name INTO o_name FROM tb_user u WHERE id = i_id;
END $$

@Mapper
public interface UserMapper {

    void getUserNameById(UserDto userDto);  // 注意没有返回值
}

<?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.itdong.mapper.UserMapper">
    <select id="getUserNameById" statementType="CALLABLE">
        {
            call getUserNameById(
                #{id, mode=IN}, /*调用入参对象中的get方法，获取id的值*/
                #{name, mode=OUT, jdbcType=VARCHAR} /*调用入参对象的set方法， 设置name的值*/
            )
        }
    </select>
</mapper>

@Test
void contextLoads() {
    UserDto userDto = new UserDto();
    userDto.setId(445225202303020001L);
    System.out.println(userDto);
    userMapper.getUserNameById(userDto);
    System.out.println(userDto);
    }

statementType=“CALLABLE”
jdbcType=VARCHAR