Question

mybatis List<Map> 格式传值对sql进行操作问题

SELECT
"Cid","LineId","LineName","StationId","StationName","Position","Remark",
"CreateTime","Creater","UpdateTime","Updater","TestFlag","Invalid"
FROM
"t"
WHERE "TestFlag" = 1
<if test="LineList != null">
<foreach collection="LineList" item="lineInfo">
and "LineId" = #{lineInfo.lineId,jdbcType=VARCHAR} and "StationId" = #{lineInfo.stationId,jdbcType=VARCHAR}
</foreach>
</if>
ORDER BY "UpdateTime" DESC

lineId和stationId为空，lineInfo里面有值

Answer 1

mybatis只管取值，根本就不会关心你的map里都有什么类型的数据。报错可能的情况是key对应的值与数据库的类型不匹配