HttpWebRequest获取网页数据

[oboaixoaix]

如题之前是可以的,现在不可以了,不知道是什么原因,请各网友帮忙,我得到的headers如下:
Date: Sat, 30 Jun 2007 02:29:57 GMT
Server: Apache
Expires: Mon, 26 Jul 1997 05:00:00 GMT
Last-Modified: Sat, 30 Jun 2007 02:29:57 GMT
Cache-Control: no-cache, must-revalidate
Pragma: no-cache
Content-Length: 0
Connection: close
Content-Type: text/html

[YUAN168]

顶，学习中....

[wzd24]

缓存的原因！

[oboaixoaix]

wzd24(牧野)大哥能不能具体一点,要怎样才能做好

[CathySun118]

是否ａｐａｃｈ出了问题？

[oboaixoaix]

string receiveData = string.Empty;
HttpWebRequest myHttpWebRequest = WebRequest.Create(url) as HttpWebRequest;

myHttpWebRequest.Method = "POST";
myHttpWebRequest.ContentType = "application/x-www-form-urlencoded";
myHttpWebRequest.KeepAlive = true;
myHttpWebRequest.CookieContainer = new CookieContainer();
myHttpWebRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.1.4322)";
myHttpWebRequest.Referer= myUrl[i] ;
myHttpWebRequest.Headers.Add("Cache-Control", "no-cache");
myHttpWebRequest.Headers.Add("Pragma", "no-cache");
myHttpWebRequest.Accept = "*/*"; myHttpWebRequest.ContentLength = indata.Length;

Stream myRequestStream = myHttpWebRequest.GetRequestStream();
StreamWriter myStreamWriter = new StreamWriter(myRequestStream, Encoding.GetEncoding(936));
myStreamWriter.Write(indata);
myStreamWriter.Close();
myRequestStream.Close();

HttpWebResponse myHttpWebResponse = myHttpWebRequest.GetResponse() as HttpWebResponse;
myHttpWebResponse.Cookies = myCookieContainer.GetCookies(myHttpWebRequest.RequestUri);
Stream myResponseStream = myHttpWebResponse.GetResponseStream();
StreamReader myStreamReader = new StreamReader(myResponseStream,Encoding.GetEncoding(encode));
receiveData = myStreamReader.ReadToEnd();

myStreamReader.Close();
myResponseStream.Close();
上面是原代码,之前是好的,就这几天抓不到了,我想是人家改动了什么,我有个朋友说是人家改了"Referer",可我换了很多Referer还是不行,不知道是啥原因

[oboaixoaix]

CathySun118(斯年),请问一下什么是ａｐａｃｈ,

[oboaixoaix]

我仔细看了一下headers,和之前不同之处就是现在的Content-Length: 0,之前并不是0

[JavaNet的牛肉粉丝]

是不是no-cache