update ConsoleServiceImpl#getObjectMeta

oss-mgr/src/main/java/cn/reghao/oss/mgr/rpc/ConsoleServiceImpl.java

@@ -127,6 +127,11 @@ public class ConsoleServiceImpl implements ConsoleService {
     @Override
     public ObjectMeta getObjectMeta(String httpHost, String objectName) {
         UserNode userNode = userNodeService.getUserNodeByDomain(httpHost);
+        if (userNode == null) {
+            log.error("userNodenot found with  {} and {}", httpHost, objectName);
+            return null;
+        }
+
         long uploadBy = userNode.getCreateBy();
         return objectRepository.getObjectMetaByName(objectName, uploadBy);
     }