301将非www重定向到www并非始终有效 [英] 301 redirect non-www to www not always working

问题描述

我已经阅读了大量的帖子和页面，试图弄清楚这一点.我大部分都在工作.我设置了.htaccess文件，并且尝试将网站中的任何页面从非www重定向(301)重定向到www版本.

I've read through a ton of posts and pages trying to figure this out. I have it mostly working. I have a .htaccess file setup and I'm trying to redirect (301) any page in my site from non-www to www version.

RewriteEngine On
RewriteCond %{HTTP_HOST} ^example.com [NC]
RewriteRule ^(.*)$ http://www.example.com/$1 [L,R=301]

它似乎可以从基本url开始工作.但是，它不会重定向子页面.

It seems to work from the base url. However, it doesn't redirect for sub pages.

这有效:

example.com-> www.example.com

example.com -> www.example.com

这不起作用:

example.com/foo.html-> www.example.com/foo.html

example.com/foo.html -> www.example.com/foo.html

任何帮助将不胜感激

推荐答案

我认为您需要添加\以逃避域中的点(第2行).

I think you need to add a \ to escape the dot in your domain (line 2).

如:

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

...如此处所示:

...as seen here: http://www.hostingdiscussion.com/promotion-marketing/26083-301-redirect-non-www-www-vice-versa-good-search-engine-optimization-technique.html

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