Mybatis调用Mysql数据库存储过程

Mybatis调用Mysql数据库存储过程

存储过程（Stored Procedure）是为了完成特定功能的SQL语句集，经编译创建并保存在数据库中，用户可通过指定存储过程的名字并给定参数(需要时)来调用执行。

如果使用Mybatis框架，那么如何调用存储过程呢？

例子：带参数并返回一个结果集

• 1、存储过程（查询当前用户的所有子部门）

DELIMITER $$

USE `pcloud_outEmployees`$$

DROP PROCEDURE IF EXISTS `sp_findChildDeptListByUserId`$$

CREATE DEFINER=`root`@`%` PROCEDURE `sp_findChildDeptListByUserId`(userId BIGINT(20))
BEGIN
	DECLARE dIdStr TEXT;
	DECLARE dId TEXT;
	SET dIdStr = '';
	#查询当前用户的所有部门Id
	SET dId = (SELECT GROUP_CONCAT(d.dept_id) FROM tb_user_dept d WHERE d.user_id =userId);
	#查询所有部门下的子部门Id
	WHILE dId IS NOT NULL DO             
		IF dIdStr = '' THEN
		    SET dIdStr = CONCAT(dIdStr, dId);
		ELSE
		    SET dIdStr = CONCAT(dIdStr, ',', dId);
		END IF;
		 
		SELECT GROUP_CONCAT(dept_id) INTO dId FROM tb_dept WHERE FIND_IN_SET(parent_id, dId) > 0;
	END WHILE; 
	#查询所有部门
	SELECT DISTINCT d.dept_name AS `label`,d.dept_id AS `value`,d.dept_id AS id,d.parent_id AS parentId FROM tb_dept d WHERE FIND_IN_SET(d.dept_id, dIdStr) > 0;
END$$

DELIMITER ;

• 2、DAO和XML

List<DeptCas> sp_findChildDeptListByUserId(@Param("userId")Long userId);

<select id="sp_findChildDeptListByUserId" resultType="cn.pconline.pcloud.base.vo.DeptCas" statementType="CALLABLE">
    call sp_findChildDeptListByUserId(#{userId,mode=IN,jdbcType=BIGINT})
 </select>

参考文档：

https://www.cnblogs.com/xiaoxi/p/6606011.html

https://www.jiweichengzhu.com/article/2435813e67d14d0b9d003031ad07559a