~

gan-modules/ruoyi-gan/src/main/resources/mapper/app/AppUserFriendMapper.xml

@@ -33,7 +33,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
     <select id="selectByFriendId" parameterType="java.lang.Long" resultType="java.lang.Long">
         select DISTINCT(user_id) from app_user_friend
         <where>
-            <if test="ids != null and ids.length > 0">
+            <if test="ids != null and ids.size() > 0">
                 friend_id in
                 <foreach collection="ids" item="item" open="(" separator="," close=")">
                     #{item}