private void IsValidLoginUUID() { BLL.SysUserBLL bll = new SysUserBLL(); List <AdminLoginLogModel> logList = bll.GetLogsByUUID(tokenModel.appId); if (logList.Count > 0) { ReturnData(2, "您已经被迫下线", ""); } else { ReturnData(0, "用户不存在", ""); } }