.htaccess: force www except subfolder

问题

Until now I have used this code to redirect request from example.com/url/to/page to www.example.com/url/to/page

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

Recently I added shortlinks like example.com/x/abc to my page These links should not have "www" at the beginning

I tried

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

but this does not work. Firebug shows 2 redirects: non-www to www and then shortlink to longlink instead of just 1 redirect shortlink to longlink. I also empty cache each time I change .htaccess

How can I achieve the correct redirection?

回答1:

This should work:

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

%{REQUEST_URI} starts matching from a slash at the start.

来源：https://stackoverflow.com/questions/18814335/htaccess-force-www-except-subfolder