Mybatis使用<foreach collection="***" item="**" open="(" separator="," close=")">问题

来源:互联网 发布:sqoop导入数据到oracle 编辑:程序博客网 时间:2024/05/19 16:23

昨天在使用:

<foreach collection="userTypes" item="userType" open="(" separator="," close=")">

时出现一个错误,提示SQL错误,检查发现是在“<foreach>”前面的<if></if>判断语句中使用非空字符串判断,而item只接受list,数组和map,所以出错!

<if test="userTypes != null">AND USERTYPE in    <foreach collection="userTypes" item="userType" open="(" separator="," close=")">   #{userType}   </foreach></if>

原始是:

<if test="userTypes != null and '' != userTypes ">AND USERTYPE in    <foreach collection="userTypes" item="userType" open="(" separator="," close=")">   #{userType}   </foreach></if>


                                             
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