fix

@@ -1873,12 +1873,12 @@ public class GrassArticleServiceImpl implements IGrassArticleService {
 
             //笔记封面图  长文章
             //如果没有单独的给笔记设置封面图，取图片列表的第一张作为封面图
-            String coverImage = imgMap.get(article.getId()).get(0);
-            rspBo.setCoverImg(coverImage);
-
             //短视频封面图
             if(sort == 4){
                 rspBo.setCoverImg(videoMap.get(article.getId()) == null ? "" : videoMap.get(article.getId()).getString("coverUrl"));
+            }else {
+                String coverImage = imgMap.get(article.getId()).get(0);
+                rspBo.setCoverImg(coverImage);
             }
             rspBo.setCoverImgSquare(coverImageMap.get(article.getId()));
             rspBo.setCoverImgFlat(coverImage2Map.get(article.getId()));