HTTP的post和get总结

贴一下自己的源码

 

 

post：

 

 

                                string postData = "username=" + username + "&password=" + password;
                                HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create("http://192.168.1.8:8080/TrunkBeans/RpcService");
                                //HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
                                request.Method = "POST";
                                request.ContentType = "application/x-www-form-urlencoded";
                                request.Timeout = 300000;
                                Encoding encoding = Encoding.GetEncoding("gb2312");//处理中文乱码
                                byte[] bytes = encoding.GetBytes(postData);
                                request.ContentLength = bytes.Length;
                                Stream requestStream = request.GetRequestStream();
                                requestStream.Write(bytes, 0, bytes.Length);
                                requestStream.Flush();
                                requestStream.Close();

                                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                                Stream myResponseStream = response.GetResponseStream();
                                StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("gb2312"));
                                string responseString = myStreamReader.ReadToEnd();
                                myStreamReader.Close();
                                myResponseStream.Close();

                                MessageBox.Show(responseString);

 

 

 

get：

 

HttpWebRequest req = (HttpWebRequest) HttpWebRequest.Create( "http://www.google.com/webhp?hl=zh-CN" );
req.Method = "GET";
using (WebResponse wr = req.GetResponse())
{
   //在这里对接收到的页面内容进行处理
} 

 

post上传文件

    private void addpic_Click(object sender, EventArgs e)
        {
            this.openPic.Filter = "图片文件(*.jpg,*.gif,*.bmp)|*.jpg|*.gif|*.bmp";
            if(DialogResult.OK==this.openPic.ShowDialog()&&(this.openPic.FileName!=null))
            {
              
                Bitmap bit = new Bitmap(this.openPic.FileName);
                this.pictureBox1.Image = Image.FromHbitmap(bit.GetHbitmap());

                int last = this.openPic.FileName.LastIndexOf(".");
                string dat = this.openPic.FileName.Substring(last);

                DateTime date = DateTime.Now;
                picname=date.ToString("yyyyMMddHHmmss", DateTimeFormatInfo.InvariantInfo);
                picname = picname + dat;
                //MessageBox.Show(picpath + @"/" + picname + ".png");
                //File.Move(this.openPic.FileName,picpath+@"/"+picname);
                File.Copy(this.openPic.FileName, picpath + @"/" + picname);
                string urlStr = "http://192.168.1.45:8080/news/HelloPostFile.jsp";
                UploadFileBinary1(picpath + "//"+picname, urlStr);

            }

        }

        public void UploadFileBinary1(string localFile, string uploadUrl)
        {
            try
            {

                DateTime time1;
                time1 = DateTime.Now;
                long num3 = time1.Ticks;
                //text1 = "---------------------" + num3.ToString("x");

                string boundary = "---------------------------" + num3.ToString("x");
                // Build up the post message header
                StringBuilder sb = new StringBuilder();
                sb.Append("--");
                sb.Append(boundary);
                sb.Append("/r/n");
                sb.Append("Content-Disposition: form-data; name=/"file/"; filename=/"");
                sb.Append(localFile);
                sb.Append("/"");
                sb.Append("/r/n");
                sb.Append("Content-Type: application/octet-stream");
                // sb.Append("Content-Type: application/x-xml");
                //sb.Append("Content-Type: text/xml");
                sb.Append("/r/n");
                sb.Append("/r/n");

                string postHeader = sb.ToString();
                byte[] postHeaderBytes = Encoding.UTF8.GetBytes(postHeader);
                byte[] boundaryBytes = Encoding.ASCII.GetBytes("/r/n--" + boundary + "/r/n");

                // Open the local file
                FileStream rdr = new FileStream(localFile, FileMode.Open);

                HttpWebRequest req = (HttpWebRequest)WebRequest.Create(uploadUrl);

                req.Method = "post";
                req.AllowWriteStreamBuffering = true;
                req.ContentType = "multipart/form-data boundary=" + boundary;
                //req.ContentLength == boundaryBytes.Length + postHeaderBytes.Length + rdr.Length;
                req.ContentLength = boundaryBytes.Length + postHeaderBytes.Length + rdr.Length;
                // Retrieve request stream
                Stream reqStream = req.GetRequestStream();

                // BinaryReader r = new BinaryReader(rdr);
                // byte[] postArray = r.ReadBytes((int)fs.Length);
                // Stream postStream = myWebClient.OpenWrite(uriString, "PUT");
                reqStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);

                // Allocate byte buffer to hold file contents

                long length = rdr.Length;
                byte[] inData = new byte[409600];

                // loop through the local file reading each data block
                //  and writing to the request stream buffer
                int bytesRead = rdr.Read(inData, 0, inData.Length);
                while (bytesRead > 0)
                {
                    reqStream.Write(inData, 0, bytesRead);
                    bytesRead = rdr.Read(inData, 0, inData.Length);
                }

                rdr.Close();

                reqStream.Write(boundaryBytes, 0, boundaryBytes.Length);
                reqStream.Close();

                HttpWebResponse response = (HttpWebResponse)req.GetResponse();
                Stream myResponseStream = response.GetResponseStream();
                StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("gb2312"));
                string retString = myStreamReader.ReadToEnd();
                myStreamReader.Close();
                myResponseStream.Close();

             
                // response.Close();
            }
            catch (Exception ex)
            {
                string exContent;
                exContent = ex.ToString();
                MessageBox.Show(exContent);

            }

        }

 

 

 

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
                 request.Method = "POST";//这无论是赋post还是get，都必须用全大写，此值错一点，都会导致程序错误，因为不符合http协议
request.ContentType = "multipart/form-data; boundary=--abc";//或者为"application/x-www-form-urlencoded"，对应form标签里的 enctype属性，boundary那部分查是FORM元素各值的分隔符，具体请查阅HTTP协议相关文档，如果此值用application/x- www-form-urlencoded则form各元素用&来分隔，而元素的值是经过了url编码，调用System.Web.HttpUtility.UrlEncode方法，就能将值进行url编码。
//如果需要加cookie，则按如下方式添加，具体请参阅msdn
request.CookieContainer = new CookieContainer();

request.CookieContainer.Add(new Cookie("test", "i love u", "/", "localhost"));

byte[] data = Encoding.GetEncoding(encoding).GetBytes(postData);//将要发送的数据按HTTP协议拼装好字符串转成字节数组
request.ContentLength = data.Length;//设置内容的长度，长度就是要发送的整个字节数组的长度，此句必须有，长度不对就会导致错误
request.GetRequestStream().Write(data, 0, data.Length);//获取request的流，将数据写入流中，至此完成了form提交的必须有的步骤
response = (HttpWebResponse)request.GetResponse();//最后取得response获取服务器端的返回数据进行处理