private byte[] UploadFiles(string address, UploadFile file, Dictionary<string,string> values)
{
var request = WebRequest.Create(address);
request.Method = "POST";
foreach (var header in headers)
{
if (header.Key == "Content-type") continue;
request.Headers.Add(header.Key, header.Value);
}
var boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x", NumberFormatInfo.InvariantInfo);
request.ContentType = "multipart/form-data; boundary=" + boundary;
boundary = "--" + boundary;
using (var requestStream = request.GetRequestStream())
{
// Write the values
foreach (string name in values.Keys)
{
var kbuffer = Encoding.ASCII.GetBytes(boundary + Environment.NewLine);
requestStream.Write(kbuffer, 0, kbuffer.Length);
kbuffer = Encoding.ASCII.GetBytes(string.Format("Content-Disposition: form-data; name=\"{0}\"{1}{1}", name, Environment.NewLine));
requestStream.Write(kbuffer, 0, kbuffer.Length);
kbuffer = Encoding.UTF8.GetBytes(values[name] + Environment.NewLine);
requestStream.Write(kbuffer, 0, kbuffer.Length);
}
var buffer = Encoding.ASCII.GetBytes(boundary + Environment.NewLine);
requestStream.Write(buffer, 0, buffer.Length);
buffer = Encoding.UTF8.GetBytes(string.Format("Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"{2}", file.Name, file.Filename, Environment.NewLine));
requestStream.Write(buffer, 0, buffer.Length);
buffer = Encoding.ASCII.GetBytes(string.Format("Content-Type: {0}{1}{1}", file.ContentType, Environment.NewLine));
requestStream.Write(buffer, 0, buffer.Length);
file.Stream.CopyTo(requestStream);
buffer = Encoding.ASCII.GetBytes(Environment.NewLine);
requestStream.Write(buffer, 0, buffer.Length);
var boundaryBuffer = Encoding.ASCII.GetBytes(boundary + "--");
requestStream.Write(boundaryBuffer, 0, boundaryBuffer.Length);
}
using (var response = request.GetResponse())
using (var responseStream = response.GetResponseStream())
using (var stream = new MemoryStream())
{
responseStream.CopyTo(stream);
return stream.ToArray();
}
}
private string Upload(string url, FileStream stream, Dictionary<string, string> map)
{
var file = new UploadFile
{
Name = "file",
Filename = Path.GetFileName(stream.Name),
ContentType = "image/png",
Stream = stream
};
if (map == null) map = new Dictionary<string, string>();
map.Add("filename", Path.GetFileName(stream.Name));
byte[] result = UploadFiles(url, file, map);
string ResultStr = System.Text.Encoding.GetEncoding("utf-8").GetString(result);//解码
return ResultStr;
}