是否可以使用 bash 从服务器获取 mp3 的下载文件名?

是否可以使用 bash 从服务器获取 mp3 的下载文件名?

我正在尝试从服务器获取 mp3 的最终下载文件名,具体来说是 audiotool.com

例如http://api.audiotool.com/track/haunt_opaque/mixdown.mp3

当你在网络浏览器中导航到此 URL 时,它会开始下载一个文件,其名称包含该歌曲的完整信息

例如“opaqity - Haunt (opaque).mp3”

是否可以使用标准 Linux 命令(例如 curl)从顶部链接获取最终下载名称?我已经尝试使用几个重定向查找器命令和 curl,但都没有奏效。

感谢您的帮助

答案1

echo -e "GET /track/haunt_opaque/mixdown.mp3 HTTP/1.1\nHost: api.audiotool.com\n\n" | nc -q 3 api.audiotool.com 80 | head -n 20 | grep -a "^Content-Disposition:" | cut -d = -f 2

输出:

"opaqity - Haunt (opaque).mp3"

答案2

使用wget,文件将按照 URL 指定的方式保存为mixdown.mp3。如果wget -S使用 ,则如果需要,全名将显示在Content-Disposition处置标题下:

$ wget -S http://api.audiotool.com/track/haunt_opaque/mixdown.mp3
--2014-09-26 15:34:19--  http://api.audiotool.com/track/haunt_opaque/mixdown.mp3
Resolving api.audiotool.com (api.audiotool.com)... 144.76.222.84
Connecting to api.audiotool.com (api.audiotool.com)|144.76.222.84|:80... connected.
HTTP request sent, awaiting response... 
  HTTP/1.1 200 OK
  Server: nginx/1.5.6
  Date: Fri, 26 Sep 2014 22:34:20 GMT
  Content-Type: audio/mpeg
  Transfer-Encoding: chunked
  Connection: keep-alive
  Keep-Alive: timeout=65
  Access-Control-Allow-Origin: *
  Expires: Fri, 26 Sep 2014 22:34:20 GMT
  Cache-Control: no-cache, private, no-store
  Content-Disposition: attachment; filename="opaqity - Haunt (opaque).mp3"
  Pragma: no-cache
  X-Lift-Version: 2.4
Length: unspecified [audio/mpeg]
Saving to: `mixdown.mp3'

    [                              <=>                               ] 4,499,633    784K/s   in 7.0s    

2014-09-26 15:34:27 (630 KB/s) - `mixdown.mp3' saved [4499633]

答案3

无论如何,在文件传输完成之前,这不会告诉您远程文件名:

user@server ~
$ curl --remote-header-name --remote-name http://api.audiotool.com/track/haunt_opaque/mixdown.mp3
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 4394k    0 4394k    0     0   167k      0 --:--:--  0:00:26 --:--:--  294k
curl: Saved to filename 'opaqity - Haunt (opaque).mp3'

我能够使用 Content-Disposition 标头值获取 Chrome 开发人员工具的响应标头。不确定 curl 出现问题的原因,但我怀疑这与 nginx 性能原因有关。

HTTP/1.1 200 OK
Server: nginx/1.5.6
Date: Fri, 26 Sep 2014 22:08:05 GMT
Content-Type: audio/mpeg
Transfer-Encoding: chunked
Connection: keep-alive
Keep-Alive: timeout=65
Access-Control-Allow-Origin: *
Expires: Fri, 26 Sep 2014 22:08:05 GMT
Cache-Control: no-cache, private, no-store
Content-Disposition: attachment; filename="opaqity - Haunt (opaque).mp3"
Pragma: no-cache
X-Lift-Version: 2.4

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