diff --git a/server/like-common/src/main/java/com/mdd/common/utils/ArrayUtil.java b/server/like-common/src/main/java/com/mdd/common/utils/ArrayUtil.java
index 07c424f5..e271c403 100644
--- a/server/like-common/src/main/java/com/mdd/common/utils/ArrayUtil.java
+++ b/server/like-common/src/main/java/com/mdd/common/utils/ArrayUtil.java
@@ -171,6 +171,9 @@ public class ArrayUtil {
      */
     public static List<Integer> stringToListAsInt(String str, String regex){
         List<Integer> list = new ArrayList<>();
+        if (str.equals("")) {
+            return list;
+        }
         if (str.contains(regex)){
             String[] split = str.split(regex);
             for (String value : split) {