//开始启动工作时执行的事件处理方法
void Worker_DoWork(object sender, DoWorkEventArgs e)
{
FileUploadItem receive = e.Argument as FileUploadItem;
e.Result = UpSound_Request(receive);
}
public int UpSound_Request(FileUploadItem receive)
{
string address = receive.Address;
string fileNamePath = receive.FileNamePath;
string saveName = receive.SaveName;
int returnValue = 0;
//要上传的文件
FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read);
//二进制对象
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");
//请求的头部信息
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(HttpUtility.UrlEncode(saveName, Encoding.UTF8));
sb.Append("\";");
sb.Append("\r\n");
sb.Append("Content-Type: ");
sb.Append("application/octet-stream");
sb.Append("\r\n");
sb.Append("\r\n");
byte[] postHeaderBytes = Encoding.UTF8.GetBytes(sb.ToString());
// 根据uri创建HttpWebRequest对象
HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(new Uri(address));
httpReq.Method = "POST";
//对发送的数据不使用缓存
httpReq.AllowWriteStreamBuffering = false;
//设置获得响应的超时时间（300秒）
httpReq.Timeout = 300000;
httpReq.ContentType = "multipart/form-data; boundary=" + strBoundary;
long length = fs.Length + postHeaderBytes.Length + boundaryBytes.Length;
long fileLength = fs.Length;
FileUploadUtilChange fileUploadUtilChange = new FileUploadUtilChange();
fileUploadUtilChange.FileLength = fileLength;
fileUploadUtilChange.Length = length;
httpReq.ContentLength = 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;
fileUploadUtilChange.Second = second;
fileUploadUtilChange.Offset = offset;
worker.ReportProgress((int)(offset * 100.0 / length), fileUploadUtilChange);
System.Console.WriteLine((offset * 100.0 / length));
//this.Invoke(new Action(() =>
//{
// lbtip.Text = "已用时：" + second.ToString("F2") + "秒";
// if (second > 0.001)
// lbtip.Text += " 平均速度：" + (offset / 1024 / second).ToString("0.00") + "KB/秒";
// else
// lbtip.Text += " 正在连接…";
// lbtip.Text += "已上传：" + (offset * 100.0 / length).ToString("F2") + "%";
// lbtip.Text += (offset / 1048576.0).ToString("F2") + "M/" + (fileLength / 1048576.0).ToString("F2") + "M";
//}));
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();
//读取服务器端返回的消息
StreamReader sr = new StreamReader(s);
String sReturnString = sr.ReadLine();
s.Close();
sr.Close();
if (sReturnString == "Success")
{
returnValue = 1;
}
else if (sReturnString == "Error")
{
returnValue = 0;
}
}
catch (SystemException ex)
{
Console.WriteLine(ex.Message);
returnValue = 0;
}
finally
{
fs.Close();
r.Close();
}
return(returnValue);
}
public FileUploadUtilEvent(FileUploadItem receive)
{
this.receive = receive;
}
