如何将 .htaccess 中的子域重定向到 www.带泛型参数? [英] How can I redirect subdomains in .htaccess to www. with generic parameters?

问题描述

我正在为以下问题寻找可行的解决方案:

I am looking for a working solution for the following problem:

我在同一个网站上有多个域.

I have many domains with same website.

当有人访问 www.domainname.tld 时，应该重定向到 http://www.domainname.tld

When somebody goes to www.domainname.tld there should be redirection to http://www.domainname.tld

当有人访问 subdomain.domainname.tld 时，应该重定向到 http://www.domainname.tld

When somebody goes to subdomain.domainname.tld there should be redirection to http://www.domainname.tld

当有人访问 domainname.tld 时，应该重定向到 http://www.domainname.tld.

When somebody goes to domainname.tld there should be redirection to http://www.domainname.tld.

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我尝试了以下方法:

RewriteCond %{HTTP_HOST} !^www\.
RewriteRule (.*) http://www.%{SERVER_NAME}/$1 [L,R=301]

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问题:输入 subdomain.domainname.tld 时会重定向到 www.subdomain.domainname.tld

Problem: When entering subdomain.domainname.tld there is redirection to www.subdomain.domainname.tld

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我希望它在 .htaccess 中.

I want it to be in .htaccess please.

我已经搜索过了，可惜没有成功.

I have searched already, but unfortunately without success.

如果有人能提供解决方案，我会很高兴:)

I would be very happy if anybody could provide a solution :)

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在您的帮助下，我能够将代码更改为:

With your help I was able to change the code to:

RewriteCond %{HTTP_HOST} ^([^/.]+)\.(.*)\.(.*)$ [NC]
RewriteRule ^(.*)$ http://%2\.%3/$1 [L,R=301]

我只需要最后一次更改 -> 它不应该指向 http://domain.tld ->我更喜欢 http://www.domain.tld

I just would need a last change -> it should not direct to http://domain.tld -> I would prefer http://www.domain.tld

我尝试了不同的尝试在目标中添加 www - 但没有任何成功.

I have tried different attempts to add the www in the target - but without any success.

我以 Anonymous 解决方案结束，这对我来说效果很好:

I ended with the Anonymous solution, which works well for me:

RewriteCond %{HTTP_HOST} !^www\.[^.]+\.[^.]+$
RewriteCond %{HTTP_HOST} ([^.]+\.[^.]+)$
RewriteRule (.*) http://www.%1/$1 [L,R=301]

感谢所有有时间阅读和帮助的人！

Thanks to all who had time to read and help!

推荐答案

没有办法删除所有的子域，但是可以得到域名的最后两部分:

There’s no way to remove all subdomains, but you can get the last two parts of the domain name:

RewriteCond %{HTTP_HOST} !^www\.[^.]+\.[^.]+$
RewriteCond %{HTTP_HOST} ([^.]+\.[^.]+)$
RewriteRule (.*) http://www.%1/$1 [L,R=301]

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