django中得到當前域名

    # request.is_secure()
    #若是是https則爲True，反之爲False
    http = urlsplit(request.build_absolute_uri(None)).scheme
    #得到當前的HTTP或HTTPS
    host = request.META['HTTP_HOST']
    #獲取當前域名
    shorturl = http + '://' + host + '/' + shorturl1 + '/'
    # shorturl = re.search(r'http[s]?://[^/]+', url).group()+'/'+shorturl1+'/'