优化用户信息

suser/src/main/java/com/xhkjedu/suser/service/system/UserService.java

         ResultVo resultVo = null;
         String loginpwd = user.getLoginpwd();
         setLoginPwd(user);
-        String mac = user.getMac().toUpperCase();
+        String mac = "";
+        if(N_Utils.isNotEmpty(user.getMac())){
+            mac = user.getMac().toUpperCase();
+        }
+
         user.setMac(mac);
         UserVo userVo = userMapper.getUserByLoginnameMac(user.getLoginname(), mac);