如下
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTP:From-Https} !^on$ [NC]
RewriteCond %{HTTP_HOST} ^(www.)?abc.com$ [NC] # 将abc.com和www.abc.com跳转到https://www.abc.com,防止apache子站继承上级目录.htaccess受影响
RewriteRule ^(.*)$ https://www.abc.com/$1 [R=301,L]
</IfModule>
