C#获取指定网页HTML原代码

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C#获取指定网页HTML原代码可使用 WebClient WebRequest HttpWebRequest 三种方式来实现。

WebClient

  private string GetWebClient( string url) 
 { 
      string strHTML =  "" ; 
      WebClient myWebClient =  new WebClient(); 
      Stream myStream = myWebClient.OpenRead(url); 
      StreamReader sr =  new StreamReader(myStream, System.Text.Encoding.GetEncoding( "utf-8" )); 
      strHTML = sr.ReadToEnd(); 
      myStream.Close(); 
      return strHTML; 
 } 
 

WebRequest

  private string GetWebRequest( string url) 
 { 
      Uri uri =  new Uri(url); 
      WebRequest myReq = WebRequest.Create(uri); 
      WebResponse result = myReq.GetResponse(); 
      Stream receviceStream = result.GetResponseStream(); 
      StreamReader readerOfStream =  new StreamReader(receviceStream, System.Text.Encoding.GetEncoding( "utf-8" )); 
      string strHTML = readerOfStream.ReadToEnd(); 
      readerOfStream.Close(); 
      receviceStream.Close(); 
      result.Close(); 
      return strHTML; 
 } 
 

HttpWebRequest

 private string GetHttpWebRequest( string url) 
 { 
      Uri uri =  new Uri(url); 
      HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create(uri); 
      myReq.UserAgent =  "User-Agent:Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705" ; 
      myReq.Accept =  "*/*" ; 
      myReq.KeepAlive =  true ; 
      myReq.Headers.Add( "Accept-Language" ,  "zh-cn,en-us;q=0.5" ); 
      HttpWebResponse result = (HttpWebResponse)myReq.GetResponse(); 
      Stream receviceStream = result.GetResponseStream(); 
      StreamReader readerOfStream =  new StreamReader(receviceStream, System.Text.Encoding.GetEncoding( "utf-8" )); 
      string strHTML = readerOfStream.ReadToEnd(); 
      readerOfStream.Close(); 
      receviceStream.Close(); 
      result.Close(); 
      return strHTML; 
 } 