mybatis调用存储过程

1. MySQL创建存储过程

　　完成分页查询功能，同时返回参数记录总条数信息：

DELIMITER //
CREATE PROCEDURE sp_article_page(
    IN pageIndex BIGINT,
    IN pageSize BIGINT, 
    IN te_id BIGINT,
    IN grade_id INT,
    IN subject_id BIGINT,
    OUT total_count BIGINT
)
BEGIN
    -- set @subjectId = subject_id; -- 可能为null
    
    SET @sql = 'SELECT * FROM tb_article ';
    SET @sqlWhere = CONCAT(' WHERE article_author = ', te_id); -- 教师
    -- 大纲
    IF (grade_id IS NOT NULL) OR (subject_id IS NOT NULL) 
    THEN
        SET @sqlWhere = CONCAT(@sqlWhere, ' and outline_id in (select o_id from tb_outline where 1=1 '); 
        IF grade_id IS NOT NULL 
        THEN 
            SET @sqlWhere = CONCAT(@sqlWhere, ' and grade_id=', grade_id); 
        END IF;
        IF subject_id IS NOT NULL 
        THEN 
            SET @sqlWhere = CONCAT(@sqlWhere, ' and subject_id=', subject_id); 
        END IF;
        SET @sqlWhere = CONCAT(@sqlWhere,')');
    END IF;
    
    -- 计算总页数
    SET @sqlCount = CONCAT('SELECT count(*) into @c FROM tb_article ',@sqlWhere);
    PREPARE s FROM @sqlCount;
    EXECUTE s;
    -- deallocate s;

    -- set @pageCount int default 0;
    
    
    IF (@c MOD pageSize) = 0 THEN 
        SET @pageCount = (@c DIV pageSize);
    ELSE
        SET @pageCount = (@c DIV pageSize + 1);
    END IF;
    
    IF pageIndex > @pageCount THEN
        SET pageIndex = @pageCount;
    END IF;
    
    IF pageIndex<1 THEN
        SET pageIndex = 1;
    END IF;
    
    -- 计算skip
    SET @skip = (pageIndex-1)*pageSize;
    
    
    SET @sql = CONCAT(@sql, @sqlWhere, ' limit ', @skip, ',',pageSize);
    PREPARE stmp FROM @sql;
    EXECUTE stmp;
    SET total_count = FOUND_ROWS();
END 

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