fix

@@ -91,13 +91,14 @@ public class GrassArticleListener extends AbstractMqListener<GrassArticle> {
             if (contentData == null) {
                 return "";
             }
-            try {
+            return contentData;
+            /*try {
                 Map map = ContentConvertUtil.jsonString2Map(contentData);
                 String coverImg = (String) map.get("url");
                 return coverImg;
             } catch (Exception e) {
                 return "";
-            }
+            }*/
         }
         // 如果不是更新操作，直接返回
         return sourceObject;

@@ -73,14 +73,17 @@ public class PublicArticleBlockService {
         publicArticleBlockRepository.save(targetObject);
         // 更新 public_article.cover_img
         if (targetObject.getOrderBy() == 0) {
-            try {
+            if (targetObject.getContentData() != null) {
+                publicArticleRepository.updateCoverImgByArticleIdAndArticleTypes(targetObject.getContentData(), targetObject.getArticleId(), ServiceConstant.articleTypes);
+            }
+            /*try {
                 Map map = ContentConvertUtil.jsonString2Map(targetObject.getContentData());
                 String coverImg = (String) map.get("url");
                 if (coverImg != null)
                     publicArticleRepository.updateCoverImgByArticleIdAndArticleTypes(coverImg, targetObject.getArticleId(), ServiceConstant.articleTypes);
             } catch (Exception e) {
                 log.error("update public_article.cover_img goes error with exception {}", e);
-            }
+            }*/
         }
     }