im返回空时处理

sso-server/src/main/java/com/uas/sso/service/impl/UserServiceImpl.java

@@ -610,7 +610,7 @@ public class UserServiceImpl implements UserService {
                 throw new Exception(res.getContent());
             } else {
                 JSONObject obj = JSON.parseObject(res.getContent());
-                return String.valueOf(obj.get("dialectUID"));
+                return obj.getString("dialectUID");
             }
         }
         return null;