Django 提供未壓縮的 file.tar.gz

Question

我已經創建了提供一些 file.tar.gz 的視圖，但是當我下載它時，該文件沒有被壓縮。

運行我的應用程序的服務器上的文件有 63 438 字節：

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

但是當我下載它時它有 716 800 字節。

這是我的下載功能：

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

我認為我打開文件的方式有問題，我只是找不到正確的解決方案。

Answer 1

如果您需要提供 tar.gz 文件，請執行此操作，

    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

Answer 2

正如 Klaus D. 在評論中所說，這是編碼問題。

當我改變

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

到

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

一切都表明工作正常。