HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
byte[] requestBytes = System.Text.Encoding.ASCII.GetBytes(post);
req.Method = "POST";
req.CookieContainer = cookie;
req.ContentType = "application/x-www-form-urlencoded";
req.ContentLength = requestBytes.Length;
Stream requestStream = req.GetRequestStream();
requestStream.Write(requestBytes,0,requestBytes.Length);
requestStream.Close();
HttpWebResponse res = (HttpWebResponse)req.GetResponse();
res.Cookies = cookie.GetCookies(req.RequestUri);
StreamReader sr = new StreamReader(res.GetResponseStream(), System.Text.Encoding.Default);
strResult = sr.ReadToEnd();
sr.Close();
res.Close();
向服务器提交数据时发生：417 Expectation Failed,请问如何处理？？
