0

我正在执行以下操作以上传 .pptx 文件并将其保存在服务器的磁盘上。

当我尝试打开文件时，它说它已损坏，无法打开。

这是因为我的编码类型还是其他原因？

是否可以在 POST 中将任何任意文件作为二进制文件发送并使其一次性到达服务器？

    public static void ListenerCallback(IAsyncResult result)
    {
        HttpListener listener = (HttpListener)result.AsyncState;
        HttpListenerContext context = listener.EndGetContext(result);
        HttpListenerRequest request = context.Request;
        HttpListenerResponse response = context.Response;
        StreamReader reader = new StreamReader(request.InputStream);
        var res = reader.ReadToEnd();
        reader.Close();
        toLog.Add(res);
        NameValueCollection coll = HttpUtility.ParseQueryString(res);
        byte[] bytes = System.Text.Encoding.UTF8.GetBytes(res);
        File.WriteAllBytes("output.pptx", bytes);
        response.StatusCode = 200;
        response.ContentType = "text/html";
        using (StreamWriter writer = new StreamWriter(context.Response.OutputStream, Encoding.UTF8))
            writer.WriteLine("File Uploaded");
        response.Close();
    }

这是我发送的邮递员预览：

POST  HTTP/1.1
Host: localhost:80
Content-Type: application/vnd.openxmlformats-officedocument.presentationml.presentation
Cache-Control: no-cache
Postman-Token: 9a04aa33-cd44-d238-6873-b330524f4ae5

undefined

如果我在 np++ 中打开源（非损坏）文件，我会看到编辑器选择在 ANSI 中对其进行编码。

我目前正在用 UTF8 对其进行编码，而且我似乎没有用 ANSI 编码的选项。

此外，在比较文件大小时，我丢失了一千字节的数据。

编辑：我当前的代码现在是这个

这会将一个空文件写入磁盘。

    public static void ListenerCallback(IAsyncResult result)
    {
        HttpListener listener = (HttpListener)result.AsyncState;
        HttpListenerContext context = listener.EndGetContext(result);
        HttpListenerRequest request = context.Request;
        HttpListenerResponse response = context.Response;

        StreamReader reader = new StreamReader(request.InputStream);
        var res = reader.ReadToEnd();
        reader.Close();
        Console.WriteLine(res);
        NameValueCollection coll = HttpUtility.ParseQueryString(res);

        using (var outp = File.OpenWrite("output.pptx"))
        {
            request.InputStream.CopyTo(outp);
        }

        response.StatusCode = 200;
        response.ContentType = "text/html";
        using (StreamWriter writer = new StreamWriter(context.Response.OutputStream, Encoding.UTF7))
            writer.WriteLine("File Uploaded");
        response.Close();
    }
4

2 回答 2

0

我现在没有时间测试这个，但试试这个：

public static void ListenerCallback(IAsyncResult result)
{
    HttpListener listener = (HttpListener)result.AsyncState;
    HttpListenerContext context = listener.EndGetContext(result);
    HttpListenerRequest request = context.Request;
    HttpListenerResponse response = context.Response;

    using (var out = File.OpenWrite("output.pptx"))
    {
        request.InputStream.CopyTo(out);
    }

    response.StatusCode = 200;
    response.ContentType = "text/html";
    using (StreamWriter writer = new StreamWriter(context.Response.OutputStream, Encoding.UTF8))
        writer.WriteLine("File Uploaded");
    response.Close();
}
于 2014-08-20T01:09:11.300 回答
0

我认为这是因为您将其作为 MIME 类型“text/html”发送，而不是正确的类型“application/vnd.openxmlformats-officedocument.presentationml.presentation”。

于 2014-08-19T23:36:40.443 回答