Mybatis中 if test 判断数值字符串注意项

<if test="cutList != null">
<if test="isInterrupt == '1'.toString() ">
AND A.basic_id IN (
<foreach collection="cutList" item="item" index="index" separator="," >
#{item}
</foreach>
)
</if>
<if test="isInterrupt == '0'.toString() ">
AND A.basic_id NOT IN (
<foreach collection="cutList" item="item" index="index" separator="," >
#{item}
</foreach>
)
</if>
</if>

1. Mybatis中 if test 判断数值字符串注意项

if test 判断是否为某一数值字符串时需在数值字符串后加上toString()方法
如：

<if test="isInterrupt == '1'.toString() ">

2. Mybatis中遍历list入参

此处还有个知识点是mybatis使用foreach标签来遍历入参list。
如：

<if test="isInterrupt == '1'.toString() ">
AND A.basic_id IN (
<foreach collection="cutList" item="item" index="index" separator="," >
#{item}
</foreach>
)
</if>

collection为需遍历数组，item为当前循环的变量，index为计数器，separator=","指循环一次则以“,”分隔

这里IN 的（）可以直接用open="(" close=")"属性设置

<foreach collection="cutList" item="item" index="index" open="(" close=")" separator="," >