htaccess rewrite only main domain to subfolder

问题

I'm using a cPanel account to host multiple sites. To have a clean public_html, I use .htaccess to redirect the main domain into one of the subfolders.

So when user types in www.example.com, it will be rewritten into www.example.com/mainsite/ but still showing www.example.com in the URL.

But when using the codes below, every domain (including sub domains) will get redirected to that folder:

RewriteCond %{REQUEST_URI} !^/example
RewriteRule ^(.*)$ /mainsite/$1 [NC,L]

How can I target only www.example.com (and www.example.com/files) to be rewritten to the /mainsite?

*Other subdomains should be pointing to their own Document_Root as created.

回答1:

You need one more RewriteCond to check for main domain:

RewriteEngine On

RewriteCond %{HTTP_HOST} ^(?:www\.)?example\.com$ [NC]
RewriteCond %{REQUEST_URI} !^/mainsite/ [NC]
RewriteRule ^(.*)$ /mainsite/$1 [L]

来源：https://stackoverflow.com/questions/45182490/htaccess-rewrite-only-main-domain-to-subfolder