apache 如何始终使用 mod_rewrite 从 url 中删除 WWW？
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How to always remove WWW from a url with mod_rewrite?
提问by Yeti
I'm using the following to try and remove WWW from the url:
我正在使用以下内容尝试从 url 中删除 WWW：
RewriteCond %{HTTP_HOST} ^example.com$ [NC]
RewriteRule (.*) http://example.com [R=301]
But for some reason it doesn't work. Any suggestions?
但由于某种原因它不起作用。有什么建议？
回答by Gumbo
Here's a more generalized solution:
这是一个更通用的解决方案：
RewriteCond %{HTTP_HOST} ^www\.(.+) [NC]
RewriteRule ^ http://%1%{REQUEST_URI} [L,R=301]
回答by Kyle Rozendo
Try:
尝试：
RewriteCond %{HTTP_HOST} ^www\.example\.com$
RewriteRule ^(.*)$ http://example.com/ [R=301,L]
And without mod_rewrite:
并且没有mod_rewrite：
<VirtualHost 10.0.0.1:80>
ServerName www.example.com
Redirect permanent / http://example.com/
</VirtualHost>
Virtual hosts can be used by completing the steps in the following URL: Setting Up A Virtual Host in Apache.
可以通过完成以下 URL 中的步骤来使用虚拟主机：在 Apache 中设置虚拟主机。
回答by Fredrik Bostr?m
As a minor tweak of Kyle's answer, I'd put a / in the RewriteRule match condition, like
作为凯尔回答的一个小调整，我会在 RewriteRule 匹配条件中放一个 / ，比如
RewriteCond %{HTTP_HOST} ^www\.example\.com$
RewriteRule ^/(.*)$ http://example.com/ [R=301,L]
Otherwise, you get a double slash as a result.
否则，您会得到双斜线。
http://www.example.com/smth -> http://example.com//smth
回答by Konrad H?ffner
I would always use 307 (temporary redirect) first because if you get it wrong some browsers cache it permanently. I ended up installing Google Chrome just because I couldn't get my Firefox to forget a bad redirect even when I deleted the whole cache.
我总是首先使用 307（临时重定向），因为如果你弄错了一些浏览器会永久缓存它。我最终安装了 Google Chrome，因为即使我删除了整个缓存，我也无法让我的 Firefox 忘记错误的重定向。
回答by seaBass
Here is a solution if you don't want a hard coded domain name. Don't forget to start the rewrite engine or this won't work!
如果您不想要硬编码域名，这里有一个解决方案。不要忘记启动重写引擎，否则这将不起作用！
# Start rewrite engine
<IfModule mod_rewrite.c>
Options +FollowSymlinks
RewriteEngine On
</IfModule>
# Rewrite "www.example.com -> example.com"
<IfModule mod_rewrite.c>
RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
RewriteRule ^ http://%1%{REQUEST_URI} [R=301,L]
</IfModule>
