simple mod_rewrite redirects

问题

After a lot of research and some help, I managed to learn a bit of how mod rewrite works... Can someone tell me what's wrong with my code bellow?

######redirect all static files to the static domain
RewriteCond %{REQUEST_URI} ^/(.+)\.(gif|png|jpg|jpeg|jfif|bmp|css|js)$ [NC]
RewriteRule ^(.*)$ http://static.example.com/$1 [R=301,L]

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

######redirect IP to www
RewriteCond %{HTTP_HOST} ^100\.100\.100\.100$
RewriteRule ^(.*)$ http://www.example.com/$1 [R=301,L]

######redirect all non static files from static domain (because that remains) to www
RewriteCond %{REQUEST_FILENAME} !\.(gif|png|jpg|jpeg|jfif|bmp|css|js)$ [NC]
RewriteRule ^(.*)$ http://www.example.com/$1 [R=301,L]

Thanks!

Also, what's the difference between:

RewriteCond %{REQUEST_URI} !^/(.+)\.(gif|png|jpg|jpeg|jfif|bmp|css|js)$ [NC]

and

RewriteCond %{REQUEST_FILENAME} !\.(gif|png|jpg|jpeg|jfif|bmp|css|js)$ [NC]

回答1:

Try this .htaccess:

######redirect all static files to the static domain
RewriteCond %{HTTP_HOST} ^(www\.)?example\.com$ [NC]
RewriteRule \.(gif|png|jpe?g|jfif|bmp|css|js)$ http://static.example.com%{REQUEST_URI} [R=301,L,NC]

######redirect naked to www
RewriteCond %{HTTP_HOST} ^example\.com$ [NC,OR]
RewriteCond %{HTTP_HOST} ^100\.100\.100\.100$
RewriteRule ^ http://www.example.com%{REQUEST_URI} [R=301,L]

######redirect all non static files from static domain (because that remains) to www
RewriteCond %{HTTP_HOST} ^static\. [NC]
RewriteRule !\.(gif|png|jpe?g|jfif|bmp|css|js)$ http://www.example.com%{REQUEST_URI} [R=301,L,NC]

回答2:

Based off our previous conversation. You can also combine the www and IP rule. It only needs to check if www is not there.

######redirect naked to www or IP
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteRule (.*) http://www.example.com/$1 [R=301,L]

######redirect all static files to the static domain
RewriteCond %{HTTP_HOST} ^(www\.)?example\.com [NC] 
RewriteCond %{REQUEST_URI} ^/(.+)\.(gif|png|jpg|jpeg|jfif|bmp|css|js)$ [NC]
RewriteRule ^(.*)$ http://static.example.com/$1 [R=301,L]

######redirect all non static files from static domain (because that remains) to www
RewriteCond %{HTTP_HOST} ^images\.example\.com [NC]
RewriteCond %{REQUEST_URI} !^/(.+)\.(gif|png|jpg|jpeg|jfif|bmp|css|js)$ [NC]
RewriteRule ^(.*)$ http://www.example.com/$1 [L,R=301

This is other way.

来源：https://stackoverflow.com/questions/28820476/simple-mod-rewrite-redirects