修改好友列表数据不一致问题。

src/main/resources/mapper/PrivilageUserShopRelationDOMapper.xml

@@ -67,7 +67,7 @@
     </select>
 
     <select id="selectUserNameById" resultType="java.lang.String">
-        select t5.name from poi_store_staff t4,
+        select IFNULL(t5.name, '') from poi_store_staff t4,
                             privilage_user t5 where  t4.user_id = t5.id and t4.id  = #{id}
 
     </select>