/// <summary>
        /// Get API Model
        /// </summary>
        /// <param name="access_token">access_token</param>
        /// <returns>Model</returns>
        private EASLinkAPIModel GetAPIModel(string access_token)
        {
            EASLinkAPIModel model = new EASLinkAPIModel();

            access_token = System.Web.HttpUtility.UrlDecode(access_token);
            var dynamicObj = JsonConvert.DeserializeObject <dynamic>(access_token);

            model.Link     = dynamicObj["link"]["link"].Value;
            model.Password = dynamicObj["link"]["password"].Value;
            model.DocId    = dynamicObj["doc"]["docid"].Value;

            model.Host = dynamicObj["host"].Value;
            var port = dynamicObj["port"].Value;

            if (port > 0)
            {
                model.Host = $"{model.Host}:{port}";
            }
            return(model);
        }
        /// <summary>
        /// 获取分享文件信息
        /// </summary>
        /// <returns>分享文件信息</returns>
        public string GetShareFileInfo(string token)
        {
            try
            {
                EASLinkAPIModel model   = GetAPIModel(token);
                HttpWebRequest  request = (HttpWebRequest)WebRequest.Create($"{model.Host}/api/v1/link/get");
                request.Method      = "Post";
                request.ContentType = "application/json";

                var param = "{\"link\":\"" + model.Link + "\",\"password\":\"" + model.Password + "\",\"docid\":\"" + model.DocId + "\"}";
                var bytes = Encoding.UTF8.GetBytes(param);

                Stream reqStream = request.GetRequestStream();
                reqStream.Write(bytes, 0, bytes.Length);
                reqStream.Close();
                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                int             resCode  = (int)response.StatusCode;

                // 若为错误返回码则抛出异常
                if (resCode < 200 || resCode >= 300)
                {
                    throw new Exception();
                }

                Stream ResStream = response.GetResponseStream();
                string resBody   = string.Empty;
                using (StreamReader reader = new StreamReader(ResStream, Encoding.UTF8))
                {
                    resBody = reader.ReadToEnd();
                }
                return(resBody);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }