Apache自动跳转到HTTPS

网站根目录新建.htaccess。

写入以下内容：

方法一

RewriteEngine On 
RewriteCond %{SERVER_PORT} 80 
RewriteRule ^(.*)$ https://%{HTTP_HOST}/$1 [R,L]

方法二

RewriteEngine On 
RewriteCond %{SERVER_PORT} 80 
RewriteCond %{HTTP_HOST} ^niaoyundemo.com [NC,OR] 
RewriteCond %{HTTP_HOST} ^www.niaoyundemo.com [NC] 
RewriteRule ^(.*)$ https://%{HTTP_HOST}/$1 [R,L]