.htaccess redirect to “https://www”

问题

I'm looking for an .htaccess configuration that will redirect all requests to my site to https://www.

So whether the user visits:

www.example.com
http://example.com
http://www.example.com
https://example.com

They will always end up at:

https://www.example.com

Here is what I am currently using in my .htaccess file, however it doesn't redirect if a user visits:

www.example.com

Here is my current file contents:

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

I've tried various solutions available on Stack Overflow, but none of them seem to work as intended, often leading to redirect loops. Hopefully someone will have a better understanding of this than I do.

回答1:

Your regular expression ^example\.com doesn't match www.example.com. You probably want something like (^|\.)example\.com or (^|\.)example\.com($|:).

Edit:

To prevent the redirect loop add