diff --git a/mallchat-common/src/main/java/com/abin/mallchat/common/common/utils/AssertUtil.java b/mallchat-common/src/main/java/com/abin/mallchat/common/common/utils/AssertUtil.java
index 2182707..4c28bcb 100644
--- a/mallchat-common/src/main/java/com/abin/mallchat/common/common/utils/AssertUtil.java
+++ b/mallchat-common/src/main/java/com/abin/mallchat/common/common/utils/AssertUtil.java
@@ -47,6 +47,13 @@ public class AssertUtil {
         }
     }
 
+    //如果不是非空对象，则抛异常
+    public static void isNotEmpty(Object obj, ErrorEnum errorEnum, Object... args) {
+        if (isEmpty(obj)) {
+            throwException(errorEnum, args);
+        }
+    }
+
     //如果不是非空对象，则抛异常
     public static void isEmpty(Object obj, String msg) {
         if (!isEmpty(obj)) {
diff --git a/mallchat-custom-server/src/main/java/com/abin/mallchat/custom/chat/service/impl/ChatServiceImpl.java b/mallchat-custom-server/src/main/java/com/abin/mallchat/custom/chat/service/impl/ChatServiceImpl.java
index d003217..9ecec66 100644
--- a/mallchat-custom-server/src/main/java/com/abin/mallchat/custom/chat/service/impl/ChatServiceImpl.java
+++ b/mallchat-custom-server/src/main/java/com/abin/mallchat/custom/chat/service/impl/ChatServiceImpl.java
@@ -152,12 +152,13 @@ public class ChatServiceImpl implements ChatService {
     @Override
     public CursorPageBaseResp<ChatRoomResp> getRoomPage(CursorPageBaseReq request, Long uid) {
         CursorPageBaseResp<Room> cursorPage = roomDao.getCursorPage(request);
+        ArrayList<Room> rooms = new ArrayList<>(cursorPage.getList());
         if (request.isFirstPage()) {
             //第一页插入置顶的大群聊
             Room group = roomDao.getById(ROOM_GROUP_ID);
-            cursorPage.getList().add(0, group);
+            rooms.add(0, group);
         }
-        return CursorPageBaseResp.init(cursorPage, RoomAdapter.buildResp(cursorPage.getList()));
+        return CursorPageBaseResp.init(cursorPage, RoomAdapter.buildResp(rooms));
     }
 
     @Override