HTTP协议header中Content-Disposition中文文件名乱码

HTTP???,Content-Disposition???????????????????????????????????????????????,????????????????

?Content-Disposition????????????????,??HTTP????????ASCII??,????????????????

????????,????RFC 5987????????,??????????????????????ASCII????????ASCII?????,???????"????.txt"??????"中文文件.txt"?

?Content-Disposition?????,????filename*???????????????:

Content-Disposition: attachment; filename*=UTF-8''中文文件.txt

????????????,??????????,?????????????

??????,????????Content-Disposition???????????????,????????,????????????????