Dot Net? : [轉貼]使用 HttpWebRequest 向網站提交數據

HttpWebRequest req = (HttpWebRequest) HttpWebRequest.Create( "http://www.google.com/webhp?hl=zh-CN" );
req.Method = "GET";
using (WebResponse wr = req.GetResponse())
{
   //在這裡對接收到的頁面內容進行處理
}

string param = "hl=zh-CN&newwindow=1";
byte[] bs = Encoding.ASCII.GetBytes(param);

HttpWebRequest req = (HttpWebRequest) HttpWebRequest.Create( "http://www.google.com/intl/zh-CN/" );
req.Method = "POST";
req.ContentType = "application/x-www-form-urlencoded";
req.ContentLength = bs.Length;

using (Stream reqStream = req.GetRequestStream())
{
   reqStream.Write(bs, 0, bs.Length);
}
using (WebResponse wr = req.GetResponse())
{
   //在這裡對接收到的頁面內容進行處理
}

Encoding myEncoding = Encoding.GetEncoding("gb2312");
string address =
       "http://www.baidu.com/s?" + HttpUtility.UrlEncode("參數一", myEncoding) +
       "=" + HttpUtility.UrlEncode("值一", myEncoding);
HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(address);
req.Method = "GET";
using (WebResponse wr = req.GetResponse())
{
   //在這裡對接收到的頁面內容進行處理
}

Encoding myEncoding = Encoding.GetEncoding("gb2312");
string param =
       HttpUtility.UrlEncode("參數一", myEncoding) + "=" + HttpUtility.UrlEncode("值一", myEncoding) +
       "&" + HttpUtility.UrlEncode("參數二", myEncoding) + "=" + HttpUtility.UrlEncode("值二", myEncoding);

byte[] postBytes = Encoding.ASCII.GetBytes(param);

HttpWebRequest req = (HttpWebRequest) HttpWebRequest.Create( "http://www.baidu.com/s" );
req.Method = "POST";
req.ContentType = "application/x-www-form-urlencoded;charset=gb2312";
req.ContentLength = postBytes.Length;

using (Stream reqStream = req.GetRequestStream())
{
   reqStream.Write(bs, 0, bs.Length);
}
using (WebResponse wr = req.GetResponse())
{
   //在這裡對接收到的頁面內容進行處理
}

using System.Net;
using System.IO;
using System.Web;
/********************
 **C# HTTP Request請求程序模擬***
 * * 向服務器送出請求   * */
public string SendRequest(string param)  {
       ASCIIEncoding encoding = new ASCIIEncoding();
       byte[] data = encoding.GetBytes(param);
       HttpWebRequest request =   (HttpWebRequest)HttpWebRequest.Create(this.url);
       request.Method = "POST";
       request.ContentType = "application/x-www-form-urlencoded";
       request.ContentLength = data.Length;
       Stream sm = request.GetRequestStream();
       sm.Write(data, 0, data.Length);
       sm.Close();
       HttpWebResponse response =   (HttpWebResponse)request.GetResponse();
       if (response.StatusCode.ToString() != "OK")  {
          MessageBox.Show(response.StatusDescription.ToString());
          return "";
       }
       StreamReader myreader = new StreamReader(  response.GetResponseStream(), Encoding.UTF8);
       string responseText = myreader.ReadToEnd();
       return responseText;
}
/**C# HTTP Request請求程序模擬
 ** 進行UTF-8的URL編碼轉換(針對漢字參數)
 * * */
public string EncodeConver(string instring)  {
       return HttpUtility.UrlEncode(instring, Encoding.UTF8);
}
/**C# HTTP Request請求程序模擬
 ** 進行登錄操作並返回相應結果
 * * */
public bool DoLogin(string username,   string password)  {
       password = System.Web.Security.FormsAuthentication.  HashPasswordForStoringInConfigFile(password, "MD5");
       string param = string.Format("do=login&u={0}&p={1}",   this.EncodeConver(username), this.EncodeConver(password));
       string result = this.SendRequest(param);
       // MessageBox.Show(result); 解析 Result ,我這裡是作為一個XML Document來解析的
       return true;
}