這篇文章主要介紹了ASP.NET抓取網(wǎng)頁內(nèi)容的實(shí)現(xiàn)方法,涉及使用HttpWebRequest及WebResponse抓取網(wǎng)頁內(nèi)容的技巧,需要的朋友可以參考下
代碼如下:
代碼如下:
本文實(shí)例講述了ASP.NET抓取網(wǎng)頁內(nèi)容的實(shí)現(xiàn)方法。分享給大家供大家參考。具體實(shí)現(xiàn)方法如下:
一、ASP.NET 使用HttpWebRequest抓取網(wǎng)頁內(nèi)容
代碼如下:
/// <summary>方法一:比較推薦
/// 用HttpWebRequest取得網(wǎng)頁源碼
/// 對(duì)于帶BOM的網(wǎng)頁很有效,不管是什么編碼都能正確識(shí)別
/// </summary>
/// <param name="url">網(wǎng)頁地址" </param>
/// <returns>返回網(wǎng)頁源文件</returns>
public static string GetHtmlSource2(string url)
{
//處理內(nèi)容
string html = "";
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Accept = "*/*"; //接受任意文件
request.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.1.4322)"; //
request.AllowAutoRedirect = true;//是否允許302
//request.CookieContainer = new CookieContainer();//cookie容器,
request.Referer = url; //當(dāng)前頁面的引用
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream stream = response.GetResponseStream();
StreamReader reader = new StreamReader(stream, Encoding.Default);
html = reader.ReadToEnd();
stream.Close();
return html;
}
代碼如下:
二、ASP.NET 使用 WebResponse 抓取網(wǎng)頁內(nèi)容
代碼如下:
public static string GetHttpData2(string Url)
{
string sException = null;
string sRslt = null;
WebResponse oWebRps = null;
WebRequest oWebRqst = WebRequest.Create(Url);
oWebRqst.Timeout = 50000;
try
{
oWebRps = oWebRqst.GetResponse();
}
catch (WebException e)
{
sException = e.Message.ToString();
}
catch (Exception e)
{
sException = e.ToString();
}
finally
{
if (oWebRps != null)
{
StreamReader oStreamRd = new StreamReader(oWebRps.GetResponseStream(), Encoding.GetEncoding("utf-8"));
sRslt = oStreamRd.ReadToEnd();
oStreamRd.Close();
oWebRps.Close();
}
}
return sRslt;
}
代碼如下:
希望本文所述對(duì)大家的C#程序設(shè)計(jì)有所幫助。
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