我正在尝试将非www转发到www，并将http转发到https。我已经尝试过其他解决方案，我能工作的唯一代码如下：
RewriteEngine on
RewriteCond %{HTTP:X-Forwarded-Proto} !https
RewriteRule ^(.*)$ https://%{HTTP_HOST}/$1 [R=301,L]
RewriteCond %{HTTP_HOST} ^example.com [NC]
RewriteRule ^(.*)$ https://www.example.com/$1 [L,R=301,NC]
更新：（如@Croises所述）-先重定向www，然后重定向https
RewriteEngine on
### redirect non-www to www
RewriteCond %{HTTP_HOST} ^example.com [NC]
RewriteRule ^(.*)$ https://www.example.com/$1 [L,R=301,NC]
### redirect non-http to https
RewriteCond %{HTTP:X-Forwarded-Proto} !https
RewriteRule ^(.*)$ https://%{HTTP_HOST}/$1 [R=301,L]
在https:之前重写域
RewriteEngine on
RewriteCond %{HTTP_HOST} !^www'.example'.com$ [NC]
RewriteRule ^(.*)$ https://www.example.com/$1 [L,R=301]
RewriteCond %{HTTP:X-Forwarded-Proto} !https
RewriteRule ^(.*)$ https://%{HTTP_HOST}/$1 [R=301,L]
您可以对两个重定向都使用此单一规则：
RewriteEngine on
RewriteCond %{HTTP_HOST} !^www'. [NC,OR]
RewriteCond %{HTTP:X-Forwarded-Proto} !https
RewriteCond %{HTTP_HOST} ^(?:www'.)?(.+) [NC]
RewriteRule ^ https://www.%1%{REQUEST_URI} [L,R=301,NE]
在测试此更改之前清除浏览器缓存