C# Post上传文件 405 望高手解救
// <summary>
/// 将本地文件上传到指定的服务器(HttpWebRequest方法)
/// </summary>
/// <param name="address">文件上传到的服务器</param>
/// <param name="fileNamePath">要上传的本地文件（全路径）</param>
/// <param name="saveName">文件上传后的名称</param>
/// <param name="progressBar">上传进度条</param>
/// <returns>成功返回1，失败返回0</returns>
private static String Upload_Request(string address, string fileNamePath, string saveName /*, ProgressBar progressBar**/)
{
// 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="file";filename=""+saveName+""/r/n");
sb.Append("Content-Type: application/octet-stream /r/n/r/n");
string strPostHeader = sb.ToString();
byte[] postHeaderBytes = Encoding.UTF8.GetBytes(strPostHeader);
// 根据uri创建HttpWebRequest对象
HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(new Uri(address));
httpReq.KeepAlive = true;
httpReq.Method = Convert.ToString(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: name="Upload" boundary=" + strBoundary;
long length = fs.Length + postHeaderBytes.Length + boundaryBytes.Length;
long fileLength = fs.Length;
httpReq.ContentLength = length;
try
{
//progressBar.Maximum = int.MaxValue;
//progressBar.Minimum = 0;
//progressBar.Value = 0;
//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;
//progressBar.Value = (int)(offset * (int.MaxValue / length));
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.ReadLine();
s.Close();
sr.Close();
return sReturnString;
}
catch(Exception e)
{
MessageBox.Show(e.Message);
}
finally
{
fs.Close();
r.Close();
}
return "";
}
