/// <summary>        /// 网址流        /// </summary>        /// <param name="Url"></param>        /// <returns></returns>        public static Stream GetWebUrlStream(string Url)        {            Stream stream = null;            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);            HttpWebResponse response = (HttpWebResponse)request.GetResponse();            if (response.StatusCode == HttpStatusCode.OK)            {                stream = response.GetResponseStream();            }            return stream;        }

public ActionResult GetBaiduUrlInfo()        {            string url = RequestUtils.GetString("url");            Stream stream = HttpWebRequestUntil.GetWebUrlStream(url);            string strHtml = "";            List<byte> lst = new List<byte>();            int nRead = 0;            while ((nRead = stream.ReadByte()) != -1) lst.Add((byte)nRead);            byte[] byHtml = lst.ToArray();            //utf8的编码比较多 所以默认先用他解码              strHtml = Encoding.UTF8.GetString(byHtml, 0, byHtml.Length);            //就算编码没对也不会影响英文和数字的显示 然后匹配真正编码              string strCharSet =                Regex.Match(strHtml, @"<meta.*?charset=""?([a-z0-9-]+)\b", RegexOptions.IgnoreCase)                .Groups[1].Value;            //如果匹配到了标签并且不是utf8 那么重新解码一次              if (strCharSet != "" && (strCharSet.ToLower().IndexOf("utf") == -1))            {                try                {                    strHtml = Encoding.GetEncoding(strCharSet).GetString(byHtml, 0, byHtml.Length);                }                catch                {                }            }            return Json(new { html = strHtml }, JsonRequestBehavior.AllowGet);        }