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[ASP.net教程]c#下载网页源码的两种方法


1、WebClient:

System.Net.WebClient wc = new System.Net.WebClient();  Byte[] pageData = wc.DownloadData("网页地址");  string s= System.Text.Encoding.Default.GetString(pageData); //s = System.Text.Encoding.UTF8.GetString(pageData);去除中文乱码 

WebClient

2、HttpRequest:

 1 static class WebFunc   2 {   3   private static CookieContainer cookie = new CookieContainer();   4   private static string contentType = "application/x-www-form-urlencoded";   5   private static string accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/x-silverlight, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-ms-application, application/x-ms-xbap, application/vnd.ms-xpsdocument, application/xaml+";   6   private static string userAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022)";   7   8   /// <summary> 9   /// 10   /// </summary>11   /// <param name="url">网页地址</param>12   /// <param name="encoding">编码方式</param>13   /// <returns></returns>14   public static string GetHtmlEx(string url, Encoding encoding)  15   {  16     HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);  17     request.UserAgent = userAgent;  18     request.ContentType = contentType;  19     request.CookieContainer = cookie;  20     request.Accept = accept;  21     request.Method = "get";  22  23     WebResponse response = request.GetResponse();  24     Stream responseStream = response.GetResponseStream();  25     StreamReader reader = new StreamReader(responseStream, encoding);  26     String html = reader.ReadToEnd();  27     response.Close();  28  29     return html;  30   }  31 } 

HttpRequest

转自http://blog.csdn.net/adsdassadfasdfasdf/article/details/5831347