bash curl 302 重定向不起作用（命令行）
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curl 302 redirect not working (command line)
提问by user2029890
In the browser, navigating to this URL initiates a 302 (moved temporarily) request which in turn downloads a file.
在浏览器中，导航到此 URL 会启动 302（临时移动）请求，该请求又会下载文件。
http://www.targetsite.com/target.php/?event=download&task_id=123
http://www.targetsite.com/target.php/?event=download&task_id=123
When I view what is actually happening via Chrome network tools I see that the redirect is going to a dynamically generated path that cancels itself immediately after download. In other words, even if I know that full path I will not have time to manually call it.
当我通过 Chrome 网络工具查看实际发生的事情时，我看到重定向将转到动态生成的路径，该路径在下载后立即取消。换句话说，即使我知道完整路径，我也没有时间手动调用它。
So, how in using the command line can I mimic the browser actions?
那么，如何使用命令行来模拟浏览器操作？
I tried
我试过
curl --cookies bin/cookies.txt -O -L "http://www.targetsite.com/target.php/?event=download&task_id=123" --compressed
curl --cookies bin/cookies.txt -O -L " http://www.targetsite.com/target.php/?event=download&task_id=123" --compressed
but this just returns gibberish. The goal of this is to programmatically download this file without having to navigate to the site. Unfortunately I cannot share the site here as it is behind a log-in.
但这只会返回胡言乱语。这样做的目的是以编程方式下载此文件，而无需导航到该站点。不幸的是，我无法在此处共享该站点，因为它需要登录。
回答by devnull
You need to supply the -Lor --locationoption in order to enable curlto follow HTTP redirects.
您需要提供-Lor--location选项才能启用curl跟踪 HTTP 重定向。
Quoting from man curl:
引自man curl：
-L, --location
(HTTP/HTTPS) If the server reports that the requested page has
moved to a different location (indicated with a Location: header
and a 3XX response code), this option will make curl redo the
request on the new place. If used together with -i, --include or
-I, --head, headers from all requested pages will be shown. When
authentication is used, curl only sends its credentials to the
initial host. If a redirect takes curl to a different host, it
won't be able to intercept the user+password. See also --loca‐
tion-trusted on how to change this. You can limit the amount of
redirects to follow by using the --max-redirs option.
When curl follows a redirect and the request is not a plain GET
(for example POST or PUT), it will do the following request with
a GET if the HTTP response was 301, 302, or 303. If the response
code was any other 3xx code, curl will re-send the following
request using the same unmodified method.
