<if test="mwCodeList != null">
and t.CODE in
<choose>
<when test="mwCodeList.size == 0">
(null)
</when>
<when test="mwCodeList.size > 0">
<foreach collection="mwCodeList" item="item" open="(" close=")" separator=",">
'${item}'
</foreach>
</when>
</choose>
</if>
myBatis传入的集合可能为空的解决方法!
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转载自blog.csdn.net/zhaoliubao1/article/details/85273404
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