Question

用C#代码 get请求获取网页响应代码,通过HttpWebRequest的GetResponse()方法报异常，我想获取这相应代码

如何实现呢？
是响应代码

Answer 1

我不知道你的代码是什么样的出了异常，给你一段代码供参考：
string sRet = "";
try
{
//目标网址事先存在字符串 sPage 中
HttpWebRequest Myrq = (HttpWebRequest)HttpWebRequest.Create(sPage );
Myrq.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; EmbeddedWB 14.52 from: http://www.bsalsa.com/ EmbeddedWB 14.52; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022)";
Myrq.Accept = "*/*";
Myrq.Method = "GET";
Myrq.Headers.Add(HttpRequestHeader.AcceptLanguage, "zh-cn");
Myrq.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip,deflate");
Myrq.KeepAlive = true;
//Myrq.Referer = xmlurlrefer;//有些网址要求指定referer
//有些网页需要cookie的
//Myrq.Headers.Add(HttpRequestHeader.Cookie, sCookie);

HttpWebResponse myrp = (HttpWebResponse)Myrq.GetResponse();
long totalBytes = myrp.ContentLength;
Encoding ec;
if (!string.IsNullOrEmpty(myrp.CharacterSet))
{
ec = Encoding.GetEncoding(myrp.CharacterSet);//如果响应的网页头有指定编码就用指定编码，否则采用默认的GB2312编码
}
else
{
ec = Encoding.GetEncoding("GB2312");
}
Stream st = myrp.GetResponseStream();
using (StreamReader sr = new StreamReader(st,ec ))
{
sRet = sr.ReadToEnd();
}
st.Close();
//Console.WriteLine(sRet);
return sRet;
}
catch (WebException ex)
{
Console.WriteLine(ex.ToString());
return sRet;
}

Answer 2

啊