public ScanCodeParamModel(string ciphertext)
        {
            string plainText = AESAlgorithm.UrlDecode(ciphertext);

            string[] strArr = plainText.Split('&');
            for (int i = 0; i < strArr.Length; i++)
            {
                string[] itemArr = strArr[i].Split('=');
                switch (itemArr[0])
                {
                case "readingRoomNum":
                    readingRoomNum = itemArr[1];
                    break;

                case "seatNum":
                    seatNum = itemArr[1];
                    break;
                }
            }
        }