当url被重定向时，如何修复wget下载文件名 [英] How to fix wget download file name when the url is redirected

问题描述

Wget 在301/302重定向时无法检测文件名。例如，要从 http://www.mysql.com下载MySQL源代码/downloads/mirror.php?id=408580

Wget can't detect filename when 301/302 redirections. For example, to download the MySQL source code from http://www.mysql.com/downloads/mirror.php?id=408580

wget http://www.mysql.com/get/Downloads/MySQL-5.5/mysql-5.5.25a-linux2.6-x86_64.tar.gz/from/http://cdn.mysql.com/

该文件将另存为 index.html

wget http://cdn.mysql.com/Downloads/MySQL-5.5/mysql-5.5.25a-linux2.6-x86_64.tar.gz

该文件将另存为 mysql-5.5.25a-linux2.6-x86_64.tar.gz

但第一个URL只是第二个URL的重定向，如下所示：

but the first url is only a redirection for second URL as it is shown in:

curl -I http://www.mysql.com/get/Downloads/MySQL-5.5/mysql-5.5.25a-linux2.6-x86_64.tar.gz/from/http://cdn.mysql.com/

HTTP/1.1 302 Found
Date: Mon, 09 Jul 2012 06:11:50 GMT
Server: Apache/2.2
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: mirror=http%3A%2F%2Fcdn.mysql.com%2F; expires=Sat, 08-Jul-2017 06:11:50 GMT; path=/
Location: http://cdn.mysql.com/Downloads/MySQL-5.5/mysql-5.5.25a-linux2.6-x86_64.tar.gz
Content-Encoding: gzip
Vary: Accept-Encoding
Content-Type: text/html; charset=utf-8

如何 wget 保存 http://www.mysql.com/get/Downloads/MySQL-5.5/mysql-5.5.25a-linux2.6-x86_64.tar.gz/from/http://cdn .mysql.com / 自动（不使用 -O 参数）的.tar.gz？

How can wget save http://www.mysql.com/get/Downloads/MySQL-5.5/mysql-5.5.25a-linux2.6-x86_64.tar.gz/from/http://cdn.mysql.com/ as ".tar.gz" automatically (without using -O argument)?

推荐答案

尝试以下命令：

wget --content-disposition http://www.mysql.com/get/Downloads/MySQL-5.5/mysql-5.5.25a-linux2.6-x86_64.tar.gz/from/http://cdn.mysql.com/

当这个设置为on时，对 Content-Disposition的实验（不完全功能）支持头已启用。这可能会导致服务器对HEAD请求进行额外的往返，并且已知会遇到几个错误，这就是为什么默认情况下目前不启用。

When this is set to on, the experimental (not fully-functional) support for "Content-Disposition" header is enabled. This can result in extra round-trips to the server for a "HEAD" request and is known to suffer from a few bugs, which is why it is not currently enabled by default.

此选项对于使用 Content-Disposition 标头来描述下载文件名称的某些文件下载CGI程序很有用。

This option is useful for some file-downloading CGI programs that use "Content-Disposition" header to describe what the name of a downloaded file should be.

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