util.py 文件源码

def send_file(filename, attachment_filename, mimetype, **kwargs):
    response = flask_send_file(filename, mimetype=mimetype)

    try:
        attachment_filename = attachment_filename.encode('latin-1')
    except UnicodeEncodeError:
        filenames = {
            'filename': unicodedata
                .normalize('NFKD', attachment_filename)
                .encode('latin-1', 'ignore'),
            'filename*': "UTF-8''{}".format(
                url_quote(attachment_filename)),
        }
    else:
        filenames = {'filename': attachment_filename}

    response.headers.set(
        'Content-Disposition', 'attachment', **filenames)
    return response