修改

@@ -146,7 +146,7 @@ public class GrassArticleServiceImpl implements IGrassArticleService{
             //url中包含 ?
             url = url.substring(0, index);
         }
-        return url += "imageView2/{mode}/w/{width}/h/{height}" ;
+        return url += "?imageView2/{mode}/w/{width}/h/{height}" ;
     }
 
     @Override