http post方式上传文件

http post方式上传文件

第一步        自己建立一个网站，并通过iis进行发布 第二步        上传下载代码完善 //

/// 将本地文件上传到指定的服务器(HttpWebRequest方法) ///

/// 文件上传到的服务器 /// 要上传的本地文件（全路径） /// 文件上传后的名称 /// 成功返回1，失败返回0 private int Upload_Request(string address, string fileNamePath, string saveName) { int returnValue = 0; // 要上传的文件 FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read); BinaryReader r = new BinaryReader(fs); //时间戳 string strBoundary = "----------" + DateTime.Now.Ticks.ToString("x"); byte[] boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + strBoundary + "\r\n"); //请求头部信息 StringBuilder sb = new StringBuilder(); sb.Append("--"); sb.Append(strBoundary); sb.Append("\r\n"); sb.Append("Content-Disposition: form-data; name=\""); sb.Append("file"); sb.Append("\"; filename=\""); sb.Append(saveName); sb.Append("\""); sb.Append("\r\n"); sb.Append("Content-Type: "); sb.Append("application/octet-stream"); sb.Append("\r\n"); sb.Append("\r\n"); string strPostHeader = sb.ToString(); byte[] postHeaderBytes = Encoding.UTF8.GetBytes(strPostHeader); // 根据uri创建HttpWebRequest对象 HttpWebRequest = (HttpWebRequest)WebRequest.Create(new Uri(address)); = "POST"; //对发送的数据不使用缓存 = false; //设置获得响应的超时时间（300秒） = 300000; = "multipart/form-data; boundary=" + strBoundary; long length = fs.Length + postHeaderBytes.Length + boundaryBytes.Length; long fileLength = fs.Length; = length; try { //每次上传4k int bufferLength = 4096; byte[] buffer = new byte[bufferLength]; //已上传的字节数 long offset = 0; //开始上传时间 DateTime startTime = DateTime.Now; int size = r.Read(buffer, 0, bufferLength); Stream postStream = httpReq.GetRequestStream(); //发送请求头部消息 postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length); while (size > 0) { postStream.Write(buffer, 0, size); offset += size; TimeSpan span = DateTime.Now - startTime; double second = span.TotalSeconds; lblTime.Text = "已用时：" + second.ToString("F2") + "秒"; if (second > 0.001) { lblSpeed.Text = " 平均速度：" + (offset / 1024 / second).ToString("0.00") + "KB/秒"; } else { lblSpeed.Text = " 正在连接…"; } lblState.Text = "已上传：" + (offset * 100.0 / length).ToString("F2") + "%"; lblSize.Text = (offset / 1048576.0).ToString("F2") + "M/" + (fileLength / 1048576.0).ToString("F2") + "M"; Application.DoEvents(); size = r.Read(buffer, 0, bufferLength); } //添加尾部的时间戳 postStream.Write(boundaryBytes, 0, boundaryBytes.Length); postStream.Close(); //获取服务器端的响应 WebResponse webRespon = httpReq.GetResponse(); Stream s = webRespon.GetResponseStream(); StreamReader sr = new StreamReader(s); //读取服务器端返回的消息 String sReturnString = sr.ReadToEnd();//sr.ReadLine(); s.Close(); sr.Close(); if (sReturnString == "Success") { returnValue = 1; } else if (sReturnString == "Error") { returnValue = 0; } } catch { returnValue = 0; } finally { fs.Close(); r.Close(); } return returnValue; } 下面可以做的就是调用这个函数，赋予上面发布的网址上面

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