什么是.NET c#等效的HTTP_RAW_POST_DATA?

时间:2009-06-22 16:07:47

标签: c# flash

我试图在C#中模仿以下PHP代码

<?php

if ( isset ( $GLOBALS["HTTP_RAW_POST_DATA"] )) {

    // get bytearray
    $im = $GLOBALS["HTTP_RAW_POST_DATA"];

    // add headers for download dialog-box
    header('Content-Type: image/jpeg');
    header("Content-Disposition: attachment; filename=".$_GET['name']);
    echo $im;

}  else echo 'An error occured.';

?>

到目前为止,我有:

 public ActionResult GetPostedImage(string name)
        {
            var res = Response;
            res.Clear();
            res.Cache.SetCacheability(HttpCacheability.NoCache);
            res.ContentType = "image/jpeg";

            res.AppendHeader("Content-Disposition", "filename=\"" + name + "\"");
            res.Write(Request.InputStream);

            return View();
        }

问题是Request.InputStream不包含从以下Flash Actionscript发布的原始图像数据:

var jpgSource:BitmapData = new BitmapData(mc_avatar.width, mc_avatar.height);
jpgSource.draw(mc_avatar);
trace(jpgSource);

var jpgEncoder:JPGEncoder = new JPGEncoder(85);
var jpgStream = jpgEncoder.encode(jpgSource);
var header:URLRequestHeader = new URLRequestHeader("Content-type", "application/octet-stream");
var jpgURLRequest:URLRequest = new URLRequest("/cms3/getpostedimage?name=bloke.jpg");
jpgURLRequest.requestHeaders.push(header);
jpgURLRequest.method = URLRequestMethod.POST;
jpgURLRequest.data = jpgStream;
navigateToURL(jpgURLRequest, "_self");

我确信我遗漏了一些非常基本的东西,所以任何指针都会非常感激。

1 个答案:

答案 0 :(得分:1)

您正在调用Response.Write(Request.InputStream)并假设这会将输入流中的所有数据复制到输出流。我认为没有理由相信这种情况。我强烈怀疑它会在输入流上调用ToString(),然后将其作为文本数据写出来。

我建议你试试这个:

CopyStream(Request.InputStream, Response.OutputStream);

其中CopyStream是一个实现方法,如下所示:

public static void CopyStream(Stream input, Stream output)
{
    byte[] buffer = new byte[8192];
    int read;
    while ((read = input.Read(buffer, 0, buffer.Length)) > 0)
    {
        output.Write(buffer, 0, read);
    }
}