/// <summary>
        /// User Cookie解密
        /// </summary>
        /// <param name="cookieValue"></param>
        /// <param name="key">DES加密key</param>
        /// <returns></returns>
        public static UserCookieModel DescryptUserCookie(string cookieValue, string key)
        {
            UserCookieModel u = new UserCookieModel();

            if (string.IsNullOrEmpty(cookieValue))
            {
                return(u);
            }

            string s = DesUtil.Decrypt3DES_2(cookieValue, key);

            string[] ss = s.Split('\f');

            u._id        = int.Parse(ss[0]);
            u._uname     = ss[1];
            u._ip        = ss[2];
            u._timestamp = long.Parse(ss[3]);

            return(u);
        }