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c# http post get

2009-08-31 上传大小:25KB

using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.Collections;
using System.IO;
using System.Text.RegularExpressions;
using RE
 = System.Text.RegularExpressions.Regex;
using System.Security.Cryptography.X509Certificates;
 
/***************************************************************************************************************************************************
 * *文件名:HttpProc.cs
 * *创建人:HeDaode
 * *日 期:2007.09.01
 * *描 述:实现HTTP协议中的GET、POST请求
 * *使 用:HttpProc.WebClient client = new HttpProc.WebClient();
            client.Encoding = System.Text.Encoding.Default;//默认编码方式,根据需要设置其他类型
            client.OpenRead("http://www.baidu.com");//普通get请求
            MessageBox.Show(client.RespHtml);//获取返回的网页源代码
            client.DownloadFile("http://www.codepub.com/upload/163album.rar",@"C:\163album.rar");//下载文件
            client.OpenRead("http://passport.baidu.com/?login","username=zhangsan&password=123456");//提交表单,此处是登录百度的示例
            client.UploadFile("http://hiup.baidu.com/zhangsan/upload", @"file1=D:\1.mp3");//上传文件
            client.UploadFile("http://hiup.baidu.com/zhangsan/upload", "folder=myfolder&size=4003550",@"file1=D:\1.mp3");//提交含文本域和文件域的表单
*****************************************************************************************************************************************************/
 
namespace HttpProc
{
    ///<summary>
    ///上传事件委托
    ///</summary>
    ///<param name="sender"></param>
    ///<param name="e"></param>
    public delegate void WebClientUploadEvent(object sender, HttpProc.UploadEventArgs e);
 
    ///<summary>
    ///下载事件委托
    ///</summary>
    ///<param name="sender"></param>
    ///<param name="e"></param>
    public delegate void WebClientDownloadEvent(object sender, HttpProc.DownloadEventArgs e);
 
 
    ///<summary>
    ///上传事件参数
    ///</summary>
    public struct UploadEventArgs
    {
        ///<summary>
        ///上传数据总大小
        ///</summary>
        public long totalBytes;
        ///<summary>
        ///已发数据大小
        ///</summary>
        public long bytesSent;
        ///<summary>
        ///发送进度(0-1)
        ///</summary>
        public double sendProgress;
        ///<summary>
        ///发送速度Bytes/s
        ///</summary>
        public double sendSpeed;
    }
 
    ///<summary>
    ///下载事件参数
    ///</summary>
    public struct DownloadEventArgs
    {
        ///<summary>
        ///下载数据总大小
        ///</summary>
        public long totalBytes;
        ///<summary>
        ///已接收数据大小
        ///</summary>
        public long bytesReceived;
        ///<summary>
        ///接收数据进度(0-1)
        ///</summary>
        public double ReceiveProgress;
        ///<summary>
        ///当前缓冲区数据
        ///</summary>
        public byte[] receivedBuffer;
        ///<summary>
        ///接收速度Bytes/s
        ///</summary>
        public double receiveSpeed;
    }
 
    ///<summary>
    ///实现向WEB服务器发送和接收数据
    ///</summary>
    public class WebClient
    {
        private WebHeaderCollection requestHeaders, responseHeaders;
        private TcpClient clientSocket;
        private MemoryStream postStream;
        private Encoding encoding = Encoding.Default;
        private const string BOUNDARY = "--HEDAODE--";
        private const int SEND_BUFFER_SIZE = 10245;
        private const int RECEIVE_BUFFER_SIZE = 10245;
        private string cookie = "";
        private string respHtml = "";
        private string strRequestHeaders = "";
        private string strResponseHeaders = "";
        private int statusCode = 0;
        private bool isCanceled = false;
        public event WebClientUploadEvent UploadProgressChanged;
        public event WebClientDownloadEvent DownloadProgressChanged;
 
        ///<summary>
        ///初始化WebClient类
        ///</summary>
        public WebClient()
        {
            responseHeaders = new WebHeaderCollection();
            requestHeaders = new WebHeaderCollection();
        }
 
 
        ///<summary>
        ///读取指定URL的文本
        ///</summary>
        ///<param name="URL">请求的地址</param>
        ///<returns>服务器响应文本</returns>
        public string OpenRead(string URL)
        {
            requestHeaders.Add("Connection", "close");
            SendRequestData(URL, "GET");
            return GetHtml();
        }
 
 
        //解决证书过期无法访问的问题
        class CertPolicy : ICertificatePolicy
        {
            public bool CheckValidationResult(ServicePoint srvpt, X509Certificate cert, WebRequest req, int certprb)
            { return true; }
        }
 
        ///<summary>
        ///采用https协议访问网络
        ///</summary>
        ///<param name="URL">url地址</param>
        ///<param name="strPostdata">发送的数据</param>
        ///<returns></returns>
        public string OpenReadWithHttps(string URL,string strPostdata)
        {
            ServicePointManager.CertificatePolicy = new CertPolicy();
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL);
            request.CookieContainer = new CookieContainer();
            request.Method = "POST";
            request.Accept = "*/*";
            request.ContentType="application/x-www-form-urlencoded";
            byte[] buffer = this.encoding.GetBytes(strPostdata);
            request.ContentLength = buffer.Length;
            request.GetRequestStream().Write(buffer, 0, buffer.Length);
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            StreamReader reader = new StreamReader(response.GetResponseStream(), encoding);
            this.respHtml = reader.ReadToEnd();
            foreach (System.Net.Cookie ck in response.Cookies)
            {
                this.cookie += ck.Name + "=" + ck.Value + ";";
            }
            reader.Close();
            return respHtml;
        }
 
        ///<summary>
        ///读取指定URL的文本
        ///</summary>
        ///<param name="URL">请求的地址</param>
        ///<param name="postData">向服务器发送的文本数据</param>
        ///<returns>服务器响应文本</returns>
        public string OpenRead(string URL, string postData)
        {
            byte[] sendBytes = encoding.GetBytes(postData);
            postStream = new MemoryStream();
            postStream.Write(sendBytes, 0, sendBytes.Length);
 
            requestHeaders.Add("Content-Length", postStream.Length.ToString());
            requestHeaders.Add("Content-Type", "application/x-www-form-urlencoded");
            requestHeaders.Add("Connection", "close");
 
            SendRequestData(URL, "POST");
            return GetHtml();
        }
 
 
        ///<summary>
        ///读取指定URL的流
        ///</summary>
        ///<param name="URL">请求的地址</param>
        ///<param name="postData">向服务器发送的数据</param>
        ///<returns>服务器响应流</returns>
        public Stream GetStream(string URL, string postData)
        {
            byte[] sendBytes = encoding.GetBytes(postData);
            postStream = new MemoryStream();
            postStream.Write(sendBytes, 0, sendBytes.Length);
 
            requestHeaders.Add("Content-Length", postStream.Length.ToString());
            requestHeaders.Add("Content-Type", "application/x-www-form-urlencoded");
            requestHeaders.Add("Connection", "close");
 
            SendRequestData(URL, "POST");
 
            MemoryStream ms = new MemoryStream();
            SaveNetworkStream(ms);
            return ms;
        }
 
 
        ///<summary>
        ///上传文件到服务器
        ///</summary>
        ///<param name="URL">请求的地址</param>
        ///<param name="fileField">文件域(格式如:file1=C:\test.mp3&file2=C:\test.jpg)</param>
        ///<returns>服务器响应文本</returns>
        public string UploadFile(string URL, string fileField)
        {
            return UploadFile(URL, "", fileField);
        }
 
        ///<summary>
        ///上传文件和数据到服务器
        ///</summary>
        ///<param name="URL">请求地址</param>
        ///<param name="textField">文本域(格式为:name1=value1&name2=value2)</param>
        ///<param name="fileField">文件域(格式如:file1=C:\test.mp3&file2=C:\test.jpg)</param>
        ///<returns>服务器响应文本</returns>
        public string UploadFile(string URL, string textField, string fileField)
        {
            postStream = new MemoryStream();
 
            if (textField != "" && fileField != "")
            {
                WriteTextField(textField);
                WriteFileField(fileField);
            }
            else if (fileField != "")
            {
                WriteFileField(fileField);
            }
            else if (textField != "")
            {
                WriteTextField(textField);
            }
            else
                throw new Exception("文本域和文件域不能同时为空。");
 
            //写入结束标记
            byte[] buffer = encoding.GetBytes("--" + BOUNDARY + "--\r\n");
            postStream.Write(buffer, 0, buffer.Length);
 
            //添加请求标头
            requestHeaders.Add("Content-Length", postStream.Length.ToString());
            requestHeaders.Add("Content-Type", "multipart/form-data; boundary=" + BOUNDARY);
            requestHeaders.Add("Connection", "Keep-Alive");
 
            //发送请求数据
            SendRequestData(URL, "POST", true);
 
            //返回响应文本
            return GetHtml();
        }
 
 
        ///<summary>
        ///分析文本域,添加到请求流
        ///</summary>
        ///<param name="textField">文本域</param>
        private void WriteTextField(string textField)
        {
            string[] strArr = RE.Split(textField, "&");
            textField = "";
            foreach (string var in strArr)
            {
                Match M = RE.Match(var, "([^=]+)=(.+)");
                textField += "--" + BOUNDARY + "\r\n";
                textField += "Content-Disposition: form-data; name=\"" + M.Groups[1].Value + "\"\r\n\r\n" + M.Groups[2].Value + "\r\n";
            }
            byte[] buffer = encoding.GetBytes(textField);
            postStream.Write(buffer, 0, buffer.Length);
        }
 
        ///<summary>
        ///分析文件域,添加到请求流
        ///</summary>
        ///<param name="fileField">文件域</param>
        private void WriteFileField(string fileField)
        {
            string filePath = "";
            int count = 0;
            string[] strArr = RE.Split(fileField, "&");
            foreach (string var in strArr)
    ,         {
                Match M = RE.Match(var, "([^=]+)=(.+)");
                filePath = M.Groups[2].Value;
                fileField = "--" + BOUNDARY + "\r\n";
                fileField += "Content-Disposition: form-data; name=\"" + M.Groups[1].Value + "\"; filename=\"" + Path.GetFileName(filePath) + "\"\r\n";
                fileField += "Content-Type: image/jpeg\r\n\r\n";
 
                byte[] buffer = encoding.GetBytes(fileField);
                postStream.Write(buffer, 0, buffer.Length);
 
                //添加文件数据
                FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read);
                buffer = new byte[50000];
 
                do
                {
                    count = fs.Read(buffer, 0, buffer.Length);
                    postStream.Write(buffer, 0, count);
 
                } while (count > 0);
 
                fs.Close();
                fs.Dispose();
                fs = null;
 
                buffer = encoding.GetBytes("\r\n");
                postStream.Write(buffer, 0, buffer.Length);
            }
        }
 
        ///<summary>
        ///从指定URL下载数据流
        ///</summary>
        ///<param name="URL">请求地址</param>
        ///<returns>数据流</returns>
        public Stream DownloadData(string URL)
        {
            requestHeaders.Add("Connection", "close");
            SendRequestData(URL, "GET");
            MemoryStream ms = new MemoryStream();
            SaveNetworkStream(ms, true);
            return ms;
        }
 
 
        ///<summary>
        ///从指定URL下载文件
        ///</summary>
        ///<param name="URL">文件URL地址</param>
        ///<param name="fileName">文件保存路径,含文件名(如:C:\test.jpg)</param>
        public void DownloadFile(string URL, string fileName)
        {
            requestHeaders.Add("Connection", "close");
            SendRequestData(URL, "GET");
            FileStream fs = new FileStream(fileName, FileMode.Create);
            SaveNetworkStream(fs, true);
            fs.Close();
            fs = null;
        }
 
        ///<summary>
        ///向服务器发送请求
        ///</summary>
        ///<param name="URL">请求地址</param>
        ///<param name="method">POST或GET</param>
        ///<param name="showProgress">是否显示上传进度</param>
        private void SendRequestData(string URL, string method, bool showProgress)
        {
            clientSocket = new TcpClient();
            Uri URI = new Uri(URL);
            clientSocket.Connect(URI.Host, URI.Port);
 
            requestHeaders.Add("Host", URI.Host);
            byte[] request = GetRequestHeaders(method + " " + URI.PathAndQuery + " HTTP/1.1");
            clientSocket.Client.Send(request);
 
            //若有实体内容就发送它
            if (postStream != null)
            {
                byte[] buffer = new byte[SEND_BUFFER_SIZE];
                int count = 0;
                Stream sm = clientSocket.GetStream();
                postStream.Position = 0;
 
                UploadEventArgs e = new UploadEventArgs();
                e.totalBytes = postStream.Length;
                System.Diagnostics.Stopwatch timer = new System.Diagnostics.Stopwatch();//计时器
                timer.Start();
                do
                {
                    //如果取消就推出
                    if (isCanceled) { break; }
 
                    //读取要发送的数据
                    count = postStream.Read(buffer, 0, buffer.Length);
                    //发送到服务器
                    sm.Write(buffer, 0, count);
 
                    //是否显示进度
                    if (showProgress)
                    {
                        //触发事件
                        e.bytesSent += count;
                        e.sendProgress = (double)e.bytesSent / (double)e.totalBytes;
                        double t = timer.ElapsedMilliseconds / 1000;
                        t = t <= 0 ? 1 : t;
                        e.sendSpeed = (double)e.bytesSent / t;
                        if (UploadProgressChanged != null) { UploadProgressChanged(this, e); }
                    }
 
                } while (count > 0);
                timer.Stop();
                postStream.Close();
                //postStream.Dispose();
                postStream = null;
 
            }//end if
 
        }
 
        ///<summary>
        ///向服务器发送请求
        ///</summary>
        ///<param name="URL">请求URL地址</param>
        ///<param name="method">POST或GET</param>
        private void SendRequestData(string URL, string method)
        {
            SendRequestData(URL, method, false);
        }
 
 
        ///<summary>
        ///获取请求头字节数组
        ///</summary>
        ///<param name="request">POST或GET请求</param>
        ///<returns>请求头字节数组</returns>
        private byte[] GetRequestHeaders(string request)
        {
            requestHeaders.Add("Accept", "*/*");
            requestHeaders.Add("Accept-Language", "zh-cn");
            requestHeaders.Add("User-Agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)");
 
           string headers = request + "\r\n";
 
            foreach (string key in requestHeaders)
            {
                headers += key + ":" + requestHeaders[key] + "\r\n";
            }
 
            //有Cookie就带上Cookie
            if (cookie != "") { headers += "Cookie:" + cookie + "\r\n"; }
 
            //空行,请求头结束
            headers += "\r\n";
 
            strRequestHeaders = headers;
            requestHeaders.Clear();
            return encoding.GetBytes(headers);
        }
 
 
 
        ///<summary>
        ///获取服务器响应文本
        ///</summary>
        ///<returns>服务器响应文本</returns>
        private string GetHtml()
        {
            MemoryStream ms = new MemoryStream();
            SaveNetworkStream(ms);//将网络流保存到内存流
            StreamReader sr = new StreamReader(ms, encoding);
            respHtml = sr.ReadToEnd();
            sr.Close(); ms.Close();
            return respHtml;
        }
 
        ///<summary>
        ///将网络流保存到指定流
        ///</summary>
        ///<param name="toStream">保存位置</param>
        ///<param name="needProgress">是否显示进度</param>
        private void SaveNetworkStream(Stream toStream, bool showProgress)
        {
            //获取要保存的网络流
            NetworkStream NetStream = clientSocket.GetStream();
 
            byte[] buffer = new byte[RECEIVE_BUFFER_SIZE];
            int count = 0, startIndex = 0;
 
            MemoryStream ms = new MemoryStream();
            for (int i = 0; i < 3; i++)
            {
                count = NetStream.Read(buffer, 0, 500);
                ms.Write(buffer, 0, count);
            }
 
            if (ms.Length == 0) { NetStream.Close(); throw new Exception("远程服务器没有响应"); }
 
            buffer = ms.GetBuffer();
            count = (int)ms.Length;
 
            GetResponseHeader(buffer, out startIndex);//分析响应,获取响应头和响应实体
            count -= startIndex;
            toStream.Write(buffer, startIndex, count);
 
            DownloadEventArgs e = new DownloadEventArgs();
 
            if (responseHeaders["Content-Length"] != null)
            { e.totalBytes = long.Parse(responseHeaders["Content-Length"]); }
            else
            { e.totalBytes = -1; }
 
            //启动计时器
            System.Diagnostics.Stopwatch timer = new System.Diagnostics.Stopwatch();
            timer.Start();
 
            do
            {
                //如果取消就推出
                if (isCanceled) { break; }
 
                //显示下载进度
                if (showProgress)
                {
                    e.bytesReceived += count;
                    e.ReceiveProgress = (double)e.bytesReceived / (double)e.totalBytes;
 
                    byte[] tempBuffer = new byte[count];
                    Array.Copy(buffer, startIndex, tempBuffer, 0, count);
                    e.receivedBuffer = tempBuffer;
 
                    double t = (timer.ElapsedMilliseconds + 0.1)/1000;
                    e.receiveSpeed = (double)e.bytesReceived / t;
 
                    startIndex = 0;
                    if (DownloadProgressChanged != null) { DownloadProgressChanged(this, e); }
                }
 
                //读取网路数据到缓冲区
                count = NetStream.Read(buffer, 0, buffer.Length);
 
                //将缓存区数据保存到指定流
                toStream.Write(buffer, 0, count);
            } while (count > 0);
 
            timer.Stop();//关闭计时器
 
            if (responseHeaders["Content-Length"] != null)
            {
                toStream.SetLength(long.Parse(responseHeaders["Content-Length"]));
            }
            //else
            //{
            //    toStream.SetLength(toStream.Length);
            //    responseHeaders.Add("Content-Length", toStream.Length.ToString());//添加响应标头
            //}
 
            toStream.Position = 0;
 
            //关闭网络流和网络连接
            NetStream.Close();
            clientSocket.Close();
        }
 
 
        ///<summary>
        ///将网络流保存到指定流
        ///</summary>
        ///<param name="toStream">保存位置</param>
        private void SaveNetworkStream(Stream toStream)
        {
            SaveNetworkStream(toStream, false);
        }
 
 
 
        ///<summary>
        ///分析响应流,去掉响应头
        ///</summary>
        ///<param name="buffer"></param>
        private void GetResponseHeader(byte[] buffer, out int startIndex)
        {
            responseHeaders.Clear();
            string html = encoding.GetString(buffer);
            StringReader sr = new StringReader(html);
 
            int start = html.IndexOf("\r\n\r\n") + 4;//找到空行位置
            strResponseHeaders = html.Substring(0, start);//获取响应头文本
 
            //获取响应状态码
            //
            if (sr.Peek() > -1)
            {
                //读第一行字符串
                string line = sr.ReadLine();
 
                //分析此行字符串,获取服务器响应状态码
                Match M = RE.Match(line, @"\d\d\d");
                if (M.Success)
                {
                    statusCode = int.Parse(M.Value);
                }
            }
 
            //获取响应头
            //
            while (sr.Peek() > -1)
            {
                //读一行字符串
                string line = sr.ReadLine();
 
                //若非空行
                if (line != "")
 , ;               {
                    //分析此行字符串,获取响应标头
                    Match M = RE.Match(line, "([^:]+):(.+)");
                    if (M.Success)
                    {
                        try
                        {        //添加响应标头到集合
                            responseHeaders.Add(M.Groups[1].Value.Trim(), M.Groups[2].Value.Trim());
                        }
                        catch
                        { }
 
 
                        //获取Cookie
                        if (M.Groups[1].Value == "Set-Cookie")
                        {
                            M = RE.Match(M.Groups[2].Value, "[^=]+=[^;]+");
                            cookie += M.Value.Trim() + ";";
                        }
                    }
 
                }
                //若是空行,代表响应头结束响应实体开始。(响应头和响应实体间用一空行隔开)
                else
                {
                    //如果响应头中没有实体大小标头,尝试读响应实体第一行获取实体大小
                    if (responseHeaders["Content-Length"] == null && sr.Peek() > -1)
                    {
                        //读响应实体第一行
                        line = sr.ReadLine();
 
                        //分析此行看是否包含实体大小
                        Match M = RE.Match(line, "~[0-9a-fA-F]{1,15}");
 
                        if (M.Success)
                        {
                            //将16进制的实体大小字符串转换为10进制
                            int length = int.Parse(M.Value, System.Globalization.NumberStyles.AllowHexSpecifier);
                            responseHeaders.Add("Content-Length", length.ToString());//添加响应标头
                            strResponseHeaders += M.Value + "\r\n";
                        }
                    }
                    break;//跳出循环 
                }//End If
            }//End While
 
            sr.Close();
 
            //实体开始索引
            startIndex = encoding.GetBytes(strResponseHeaders).Length;
        }
 
 
        ///<summary>
        ///取消上传或下载,要继续开始请调用Start方法
        ///</summary>
        public void Cancel()
        {
            isCanceled = true;
        }
 
        ///<summary>
        ///启动上传或下载,要取消请调用Cancel方法
        ///</summary>
        public void Start()
        {
            isCanceled = false;
        }
 
        //*************************************************************
        //以下为属性
        //*************************************************************
 
        ///<summary>
        ///获取或设置请求头
        ///</summary>
        public WebHeaderCollection RequestHeaders
        {
            set { requestHeaders = value; }
            get { return requestHeaders; }
        }
 
        ///<summary>
        ///获取响应头集合
        ///</summary>
        public WebHeaderCollection ResponseHeaders
        {
            get { return responseHeaders; }
        }
 
        ///<summary>
        ///获取请求头文本
        ///</summary>
        public string StrRequestHeaders
        {
            get { return strRequestHeaders; }
        }
 
        ///<summary>
        ///获取响应头文本
        ///</summary>
        public string StrResponseHeaders
        {
            get { return strResponseHeaders; }
        }
 
        ///<summary>
        ///获取或设置Cookie
        ///</summary>
        public string Cookie
        {
            set { cookie = value; }
            get { return cookie; }
        }
 
        ///<summary>
        ///获取或设置编码方式(默认为系统默认编码方式)
        ///</summary>
        public Encoding Encoding
        {
            set { encoding = value; }
            get { return encoding; }
        }
 
        ///<summary>
        ///获取服务器响应文本
        ///</summary>
        public string RespHtml
        {
            get { return respHtml; }
        }
 
 
        ///<summary>
        ///获取服务器响应状态码
        ///</summary>
        public int StatusCode
        {
            get { return statusCode; }
        }
    }
}
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综合评分:3.8(66位用户评分)
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评论共有12条

qingmu11052015-09-09 14:54:07
txt的代码,需要整理才能看。。
mh2521370222014-11-28 09:59:07
很好不错,已经借鉴使用。
haibozhiyin2014-07-22 09:00:13
看着有点晕呀 ,需要整理看 但 还是表示感谢

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