//调用示例:
private void button1_Click(object sender, System.EventArgs e)
{
HttpRequestResponse xx = new HttpRequestResponse();
xx.DataArrival += new DataArrivalEventHandler(xx_DataArrival);
xx.SendRequest("http://www.triaton.com.cn/dotnet/tree/index.asp","userid=老","Post");
xx.SendRequest("http://www.triaton.com.cn/dotnet/tree/index.asp","userid=老","get");
}
private void xx_DataArrival(object sender, DataArrivalEventArgs e)
{
Console.WriteLine(e.RecievedData);
Console.WriteLine(e.IsComplete);
}
//========================
//Class1.cs
using System;
using System.Net;
using System.Threading;
using System.Text;
using System.IO;
public class RequestState
{
const int BUFFER_SIZE = 1024;
public System.Text.StringBuilder RequestData;
public byte[] BufferRead;
public System.Net.HttpWebRequest Request;
public System.IO.Stream ResponseStream;
public System.Text.Decoder StreamDecode = System.Text.Encoding.GetEncoding("gb2312").GetDecoder();
public RequestState()
{
BufferRead = new byte[BUFFER_SIZE];
RequestData = new System.Text.StringBuilder("");
Request = null;
ResponseStream = null;
}
}
public delegate void DataArrivalEventHandler(object sender, DataArrivalEventArgs e);
public class DataArrivalEventArgs : System.EventArgs
{
private string mRecievedData;
private bool mIsComplete = false;
public DataArrivalEventArgs(string Data,bool Complete)
{
mRecievedData = Data;
mIsComplete = Complete;
}
public string RecievedData
{
get
{
return mRecievedData;
}
}
public bool IsComplete
{
get
{
return mIsComplete;
}
}
}
class HttpRequestResponse
{
public static System.Threading.ManualResetEvent allDone = new System.Threading.ManualResetEvent(false);
const int BUFFER_SIZE = 1024;
public event DataArrivalEventHandler DataArrival;
protected virtual void OnDataArrival(DataArrivalEventArgs e)
{
if (DataArrival != null)
{
DataArrival(this, e);
}
}
private System.Text.Encoding mRequestEncoding = System.Text.Encoding.GetEncoding("gb2312");
public void SendRequest(string RequestURL,string RequestData,string RequestMethod)
{
HttpWebRequest req;
RequestState rs = new RequestState();
if (RequestData != null)
{
int i=0, j;
Char[] reserved = {'?', '=', '&'};
while(i { j=RequestData.IndexOfAny(reserved, i); if (j==-1) { rs.RequestData.Append(System.Web.HttpUtility.UrlEncode(RequestData.Substring(i, RequestData.Length-i),mRequestEncoding)); break; } rs.RequestData.Append(System.Web.HttpUtility.UrlEncode(RequestData.Substring(i, j-i),mRequestEncoding)); rs.RequestData.Append(RequestData.Substring(j,1)); i = j+1; } } if (RequestMethod.ToUpper() == "POST") { byte[] Buffer = null; Buffer = mRequestEncoding.GetBytes(rs.RequestData.ToString()); req =(HttpWebRequest) WebRequest.Create(RequestURL); req.ContentLength = Buffer.Length; req.Method = RequestMethod; req.ContentType = "application/x-www-form-urlencoded"; Stream newStream = req.GetRequestStream(); newStream.Write(Buffer, 0, Buffer.Length); newStream.Close(); } else { req =(HttpWebRequest) WebRequest.Create(RequestURL + "?" + rs.RequestData.ToString()); } rs.Request = req; System.IAsyncResult r = (System.IAsyncResult) req.BeginGetResponse(new System.AsyncCallback(ResponseCallback), rs); } private void ResponseCallback(IAsyncResult ar) { RequestState rs = (RequestState) ar.AsyncState; System.Net.HttpWebRequest req = rs.Request; System.Net.HttpWebResponse resp = (System.Net.HttpWebResponse) req.EndGetResponse(ar); System.IO.Stream ResponseStream = resp.GetResponseStream(); rs.ResponseStream = ResponseStream; IAsyncResult iarRead = ResponseStream.BeginRead(rs.BufferRead, 0, BUFFER_SIZE, new AsyncCallback(ReadCallBack), rs); } private void ReadCallBack(IAsyncResult asyncResult) { RequestState rs = (RequestState)asyncResult.AsyncState; System.IO.Stream responseStream = rs.ResponseStream; int read = responseStream.EndRead( asyncResult ); if (read > 0) { Char[] charBuffer = new Char[BUFFER_SIZE]; int len = rs.StreamDecode.GetChars( rs.BufferRead, 0, read, charBuffer, 0 ); System.String str = new System.String( charBuffer, 0, len); OnDataArrival(new DataArrivalEventArgs(str,false)); rs.RequestData.Append(str); IAsyncResult ar = responseStream.BeginRead( rs.BufferRead, 0, BUFFER_SIZE, new AsyncCallback(ReadCallBack), rs); } else { if(rs.RequestData.Length>1) { string strContent; strContent = rs.RequestData.ToString(); } responseStream.Close(); OnDataArrival(new DataArrivalEventArgs("\n",true)); allDone.Set(); } return; } }