// 按节点查询Type
        public ActionResult ShowTypeByMac(string mac)
        {
            ADevice device = new ADevice();
            var     rs     = device.returnType(mac);

            if (rs != null)
            {
                return(Content(JsonConvert.SerializeObject(new
                {
                    code = 1,
                    des = "查询成功",
                    data = rs,
                })));
            }
            else
            {
                return(Content(JsonConvert.SerializeObject(new
                {
                    code = 0,
                    des = "查询失败",
                })));
            }
        }