Question

我正在尝试构建一个上传方法，将记录的.wav上传到我的服务器。问题是，上传文件只是噪音而且总是一样大小。

你能告诉我为什么这是＆amp;如何解决？

private void upload()
{
    var isoStore = System.IO.IsolatedStorage.IsolatedStorageFile.GetUserStoreForApplication();
    if (isoStore.FileExists("AudioTest.wav"))
    {
        System.IO.IsolatedStorage.IsolatedStorageFileStream _data =
            isoStore.OpenFile("AudioTest.wav", FileMode.Open);

        byte[] fileContent = new byte[_data.Length];
        int bytesRead = _data.Read(fileContent, 0, 4096);

        string b64 = Convert.ToBase64String(fileContent, 0, 4096);

        WebClient wc = new WebClient();
        wc.Headers[HttpRequestHeader.ContentType] = "application/x-www-form-urlencoded";
        wc.Encoding = System.Text.Encoding.GetEncoding("ISO-8859-1");

        wc.UploadStringAsync(new Uri("http://myhost.de/t/upload.php?upload"),
            "&contents=" + b64);

        wc.UploadStringCompleted += (a, b) =>
        {
            Debug.WriteLine("Upload done");
        };
    }
}

这是PHP-Side

<?php
    echo "Starting upload\n";

    if(isset($_GET["upload"]))
    {
        $contents = $_POST["contents"];
        echo $filename;
        try
        {
            $file = fopen("filename.wav", "w");
            $input = base64_decode($contents);
            fwrite($file, $input);
            fclose($file);
        }
        catch (Exception $e) 
        {
            echo 'Caught exception: ',  $e->getMessage(), "\n";
        }
    }
?>

Answer 1

您正在阅读和编码到Base64并始终设置相同的大小4096.您可能想尝试

int bytesRead = _data.Read(fileContent, 0, _data.Length - 1);

string b64 = Convert.ToBase64String(fileContent, 0, _data.Length);

其次URL编码你的字符串，因为base64中可以有+符号。

wc.UploadStringAsync(new Uri("http://myhost.de/t/upload.php?upload"),
        "&contents=" + HttpUtility.UrlEncode(b64));

并在PHP方面

$input = base64_decode(urldecode($contents));

上传的音频只有很短的噪音

1 个答案: