我的.NET应用程序通过HttpWebRequest将单个简单文本文件发送到Web服务器 . 但是在Web服务器端，我总是得到一个空的$ _FILES数组 .

我读了所有这些问题和文章：

这是测试代码：

public static void UploadFile()

{

var boundary = "----------------------------" + DateTime.Now.Ticks.ToString("x");

var httpRequest = (HttpWebRequest)WebRequest.Create(@"https://test.com/upload.php");

httpRequest.Credentials = CredentialCache.DefaultNetworkCredentials;

httpRequest.AllowAutoRedirect = true;

httpRequest.MaximumAutomaticRedirections = 1;

httpRequest.Method = "POST";

httpRequest.ContentType = "multipart/form-data; boundary=" + boundary;

httpRequest.KeepAlive = true;

using (var requestStream = httpRequest.GetRequestStream())

{

var data = Encoding.UTF8.GetBytes("--" + boundary + "\r\n\r\n");

requestStream.Write(data, 0, data.Length);

data = Encoding.UTF8.GetBytes("Content-Disposition: form-data; name=\"MAX_FILE_SIZE\"\r\n\r\n");

requestStream.Write(data, 0, data.Length);

data = Encoding.UTF8.GetBytes("1048576"); // 1Mb

requestStream.Write(data, 0, data.Length);

data = Encoding.UTF8.GetBytes("--" + boundary + "\r\n");

requestStream.Write(data, 0, data.Length);

data = Encoding.UTF8.GetBytes("Content-Disposition: form-data; name=\"uploadedfile\"; filename=\"upload.txt\"\r\n");

requestStream.Write(data, 0, data.Length);

data = Encoding.UTF8.GetBytes("Content-Type: application/octet-stream\r\n\r\n");

requestStream.Write(data, 0, data.Length);

data = File.ReadAllBytes(@"D:\upload.txt");

requestStream.Write(data, 0, data.Length);

data = Encoding.UTF8.GetBytes("\r\n--" + boundary + "--");

requestStream.Write(data, 0, data.Length);

}

using (var response = (HttpWebResponse)httpRequest.GetResponse())

using (var sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8))

Console.WriteLine(sr.ReadToEnd());

}

/upload.php：

exit (var_dump($_FILES));

在控制台中，输出始终为： array(0){}

请帮忙 .