获取GZip加密的网页源码

public static string GetPage(string url, Encoding encoding)

        {

            try

            {

                HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;

                request.KeepAlive = true;

                request.Timeout = 20000;

                request.ContentType = "text/html; charset=UTF-8";

                // request.UserAgent = "<a href=\"https://www.baidu.com/s?wd=Mozilla&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1dBuWnzrHN-PvDLuj0sPHmk0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3ErHnvnWczPHDzP1Dsrj0LrHTz\"
target=\"_blank\" class=\"baidu-highlight\">Mozilla</a>/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)";

                request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2593.0 Safari/537.36";

                request.Accept = "*/*";

                request.KeepAlive = true;

                request.Headers.Add("Accept-Language", "zh-cn,en-us;q=0.5");

                request.AutomaticDecompression = DecompressionMethods.GZip;

                using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)

                {

                    using (Stream streamResponse = response.GetResponseStream())

                    {

                        StreamReader streamReader = new StreamReader(streamResponse, encoding);

                        return streamReader.ReadToEnd();

                    }

                }

            }

           catch(Exception ex)

            {

                return string.Empty;

            }

           

        }