Django提供未压缩的file.tar.gz

Question

我想提供一些file.tar.gz服务，但是当我下载它时，文件不会被压缩。

我的应用程序正在运行的服务器上的文件有63 438字节：

-rw-r--r-- 1 root root 63448 Nov  5 14:13 file.tar.gz

但是当我下载它时，它有716800字节。

这是我的下载功能：

def download_logs(request):
    """ View returning file to download """
    file_path = request.GET['filepath']
    original_filename = file_path.split("/")[-1]

    try:
        file_loaded = open(file_path, 'rb')
    except IOError as err:
        LOG.debug(err)
        LOG.debug("File %s does not exist", file_path)
        return error_view(request, "IOError", "File no longer exists.")

    response = HttpResponse(file_loaded.read(), 'application/x-gzip')
    file_loaded.close()
    file_type, encoding = mimetypes.guess_type(original_filename)

    if file_type is None:
        file_type = 'application/octet-stream'
    response['Content-Type'] = file_type
    response['Content-Length'] = str(os.stat(file_path).st_size)
    if encoding is not None:
        response['Content-Encoding'] = encoding

    # To inspect details for the below code, see http://greenbytes.de/tech/tc2231/
    if u'WebKit' in request.META['HTTP_USER_AGENT']:
        # Safari 3.0 and Chrome 2.0 accepts UTF-8 encoded string directly.
        filename_header = 'filename=%s' % original_filename.encode('utf-8')
    elif u'MSIE' in request.META['HTTP_USER_AGENT']:
        # IE does not support internationalized filename at all.
        # It can only recognize internationalized URL, so we do the trick via routing rules.
        filename_header = ''
    else:
        # For others like Firefox, we follow RFC2231 (encoding extension in HTTP headers).
        filename_header = 'filename*=UTF-8\'\'%s' % urllib.quote(original_filename.encode('utf-8'))
    response['Content-Disposition'] = 'attachment; ' + filename_header
    return response

我想我打开文件的方式有问题，我只是找不到正确的解决方案。

Answer 1

正如Klaus .在评论中所说，这是编码方面的一个问题。

当我改变

if encoding is not None:
    response['Content-Encoding'] = encoding

至

response['Content-Encoding'] = 'tar'

所有声明都能正常工作。

Answer 2

如果您需要提供一个tar.gz文件，请这样做，

    tar = tarfile.open("file_name.tar.gz", "r")    
    response = HttpResponse(tar, content_type='application/tar+gzip')
    response['Content-Disposition'] = 'attachment; filename="file_name.tar.gz"'
    return response