/resi/group/topic/topicattachmentlist返回null不行，加载不出来页面

epmet-module/resi-group/resi-group-server/src/main/java/com/epmet/modules/topic/service/impl/ResiTopicServiceImpl.java

@@ -2440,7 +2440,8 @@ public class ResiTopicServiceImpl extends BaseServiceImpl<ResiTopicDao, ResiTopi
     @Override
     public TopicAttachmentResultDTO topicAttachmentList(TopicAttachmentFormDTO formDTO) {
         if(StringUtils.isBlank(formDTO.getTopicId())){
-            return null;
+            //返回null不行，加载不出来页面，哎，new个对象吧
+            return new TopicAttachmentResultDTO();
         }
         TopicAttachmentResultDTO resultDTO = new TopicAttachmentResultDTO();
         //1.根据话题id查询所有的附件数据