htaccess：将站点域重定向到子域

Question

I need to redirect users accessing mysite.com to www.mysite.com in my .htaccess file.

The problem is anything I try won't work, I think because ^mysite.com doesn't exclude www.mysite.com so that will create a bad loop, but I usually get error 500.

I also need to exclude another subdomain, the img.mysite.com .

How can I do that?

I used many examples from the net & a few htaccess generators, which gave me this code:

Options +FollowSymLinks
RewriteEngine on
RewriteCond %{HTTP_HOST} ^mywebsite.com[nc]
RewriteRule ^(.*)$ http://www.mywebsite.com/$1 [r=301,nc]

Answer 1

尝试这样的事情：

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


Answer 2

RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteRule ^ http://www.%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

This is what you need - taken from the default Drupal .htaccess