HttpWebRequest post请求的一个例子

using System;

using System.IO;

using System.Collections;

using System.Data;

using System.Linq;

using System.Web;

using System.Web.Services;

using System.Web.Services.Protocols;

using System.Xml.Linq;

using System.Net;

using System.Text;

namespace WebApplication1

{

[WebService(Namespace = "http://tempuri.org/")]

[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]

public class Handler1 : IHttpHandler

{

public void ProcessRequest(HttpContext context)

{

HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create("http://fanyi.baidu.com/transcontent");

Encoding encoding = Encoding.UTF8;

string param = "ie=utf-8&source=txt&query=hello&t=1327829764203&token=8a7dcbacb3ed72cad9f3fb079809a127&from=auto&to=auto";

//encoding.GetBytes(postData);

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

string responseData = String.Empty;

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);

reqStream.Close();

}

using (HttpWebResponse response = (HttpWebResponse)req.GetResponse())

{

using (StreamReader reader = new StreamReader(response.GetResponseStream(),encoding))

{

responseData = reader.ReadToEnd().ToString();

}

context.Response.Write(responseData);

}

}

public bool IsReusable

{

get

{

return false;

}

}

}

}