Mybatis 中在xxx.mapper书写模糊查询

1.在mybatis中，书写sql，有时候会有一些不细心，如：

<select id="getGoodsByLikeTitle" resultMap="BaseResultMap">
SELECT
gd.pay_price,
gd.id,
gd.couponamount,
gd.sale_point,
gd.earn_point,
gd.stock_quantity,
gd.site_id,
gd.vip_level,
g.id AS 'goodId',
g.title AS 'goodTitle',
g.img_url AS 'goodImgUrl',
g.sale_price AS 'goodSalePrice',
g.sale_count AS 'goodSaleCount',
g.link_url AS 'goodLinkUrl',
g.tags AS 'goodTags',
g.summary AS 'goodSummary',
g.series_no AS 'goodSeriesNo',
g.spec_desc AS 'goodSpecDesc',
g.weight AS 'goodWeight',
g.add_time AS 'goodAddTime'
FROM goods_detail AS gd
INNER JOIN goods AS g
ON gd.goods_id=g.id
WHERE g.satus=1
AND gd.site_id=#{siteId}
AND g.title like CONCAT('%',#{wkeyword},'%')
ORDER BY g.add_time DESC
</select>

如果上述中的sql like 后面用的是'%${wkeyword}%',看似没有错，但你在调用时输入“ ` ”引号间的符号，sql 就无法识别，即会报错。如果用CONCAT('%',#{wkeyword},'%') 来替代'%${wkeyword}%'，则万事大吉。具体这个是怎样一个原理不是太清楚，看了很多文档都说是#{}与${}的不同，自己积累一下，避免后期遇到。

巴特西

Mybatis 中在xxx.mapper书写模糊查询

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