用HTTP传输一张图片，求大佬解答

Question

请求端：byte[] data = null;
            string inputString = string.Empty;
            Stream sm = null;
            using (MemoryStream ms=new MemoryStream())
            {
                Image image = Image.FromFile("d:\\我的配置\\桌面\\Lambda\\ConsoleApplication2\\ConsoleApplication2\\123.jpg");
                image.Save(ms,ImageFormat.Jpeg);
                data = ms.GetBuffer();
                inputString = System.Convert.ToBase64String(data);
                byte[] inputBytes = System.Convert.FromBase64String(inputString);
                MemoryStream stream = new MemoryStream(inputBytes);
                sm = stream;            }string URL = "http://172.16.18.129:1100/UploadPhotos.aspx";
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL);            byte[] hashsm = Convert.FromBase64String(inputString);
            MemoryStream newstream = new MemoryStream(hashsm);
            Stream newsm = newstream;
            byte[] filecontent = new byte[newsm.Length];
            newsm.Read(filecontent, 0, filecontent.Length);
            newsm.Close();
            newsm.Dispose();            request.Method = "POST";
            request.ContentType = "application/x-www-form-urlencoded";
            request.ContentLength = filecontent.Length;            Stream requestStream = request.GetRequestStream();（这里会报一个此流不支持读取什么的）
            requestStream.Write(hashsm, 0, hashsm.Length);
            requestStream.Close();            //接收返回参数
            HttpWebResponse res = (HttpWebResponse)request.GetResponse();
            StreamReader sr = new StreamReader(res.GetResponseStream(), System.Text.Encoding.Default);
            string result = sr.ReadToEnd();
            sr.Close();
            res.Close();
            Console.WriteLine(result);
接收端:protected void Page_Load(object sender, EventArgs e)
        {
            try
            {
                Stream sm = Request.InputStream;
                Image image = Image.FromStream(sm);
                image.Save("E:\\111.jpg");
                Response.Clear();
                Response.Write("sucess");
                Response.End();
            }
            catch (Exception)
            {
                Response.Clear();
                Response.Write("error");
                Response.End();
            }
        }主要的一个功能是 把图片转化成流，然后把这个图片的流传到另一个网页的接口端，然后接收端来保存这个图片。
相当于一个图片上传的功能。请大佬们指错，或者有个案例给我研究一下也行

Answer 1

参考一下       public static string JbrainZipBlh(string url, String parameter,ref string err)
       {   string boundaryValue = /*new String('-', 24) +*/ DateTime.Now.Ticks.ToString("x");
           string boundary = "--" + boundaryValue;
           Myrq = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(url);           
           Myrq.Method = "POST";//提交方式
           Myrq.KeepAlive = true;//保持连接
           Myrq.AllowAutoRedirect = true;//跟踪重定向           Myrq.Timeout = 5*60*1000;//5分钟
           Myrq.ContentType = "\r\nmultipart/form-data; boundary=" + boundaryValue;//内容类型
           StringBuilder builder = new StringBuilder();//文件类型头文件           builder.Append(boundary + "\r\nContent-Disposition: form-data; name=\"user_design_file\"; ");
           builder.Append("filename=\"xml");
           builder.Append("\"\r\nContent-Type: text/plain\r\n\r\n");
           string postHeader = builder.ToString();           byte[] postHeaderBytes = Encoding.UTF8.GetBytes(postHeader);
           byte[] boundayBytes = Encoding.ASCII.GetBytes("\r\n" + boundary + "--\r\n");           Myrq.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727)";//模拟浏览器类型数据           if (!SPara.cookieHeader.Equals(""))
           {
               Myrq.Headers.Add("cookie:" + SPara.cookieHeader);
           }
           // 提交请求数据           
           byte[] postData = Encoding.GetEncoding("GBK").GetBytes(parameter);//生成提交数据的比特流
           byte[] postZip = Compress(postData);//压缩比特流           Myrq.ContentLength = postZip.Length + postHeaderBytes.Length + boundayBytes.Length;//计算上传数据的长度
           try
           {
               System.IO.Stream outputStream = Myrq.GetRequestStream();
          
           outputStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
           outputStream.Write(postZip, 0, postZip.Length);
           outputStream.Write(boundayBytes, 0, boundayBytes.Length);
           outputStream.Close();
           }
           catch (WebException e)
           {
               if (e.Message.Equals("无法连接到远程服务器"))
               {
                   ComApp.Common.SysErr_Msg.Show_Msg("无法连接到服务器，程序将自动关闭");
                   System.Environment.Exit(0);
                   return "";
               }
           }           Stream responseStream;
           StreamReader reader;
           string srcString;
           try
           {
               myrp = Myrq.GetResponse() as HttpWebResponse;
           }
           catch (Exception e)
           {
               ComApp.Common.SysErr_Msg.Show_Msg(e.Message+"。缺少某些服务，也可能是服务器被关闭，系统将自动关闭！");
               isLogin = false;
               System.Environment.Exit(0);
               return "";
           }           responseStream = myrp.GetResponseStream();           
           //取出压缩流           MemoryStream stmMemory = new MemoryStream();
           byte[] buffer = new byte[64 * 1024];
           int i;
           while ((i = responseStream.Read(buffer, 0, buffer.Length)) > 0)
           {
               stmMemory.Write(buffer, 0, i);
           }
           byte[] arraryByte = stmMemory.ToArray();
           
           if (arraryByte[0]!=120)
           {
               //reader = new System.IO.StreamReader(responseStream, Encoding.GetEncoding("GBK"));
               //srcString = reader.ReadToEnd();
               webErr we = new webErr();
               we.webBrowser1.DocumentText = Encoding.GetEncoding("GBK").GetString(arraryByte);
               we.ShowDialog();
               err = we.webBrowser1.DocumentText;
               return "BLHException";
           }
           stmMemory.Close();
           Stream stream = new MemoryStream(Uncompress(arraryByte));//解压
           reader = new System.IO.StreamReader(stream, Encoding.GetEncoding("GBK"));//取得返回的流
           srcString = reader.ReadToEnd();
           reader.Close();
           myrp.Close();
           responseStream.Close();
           return srcString;
       }

Answer 2

可以参考楼上的，post文件的写法和一般的写法不一样哦

Answer 3

http是请求回应的方式，你这是啥？
请求方请求发送文件？你是要做文件上传还是啥？
怎么看到Page_Load中写个保存文件我就瞬间不知道你到底要干啥了