根目录下，.htaccess文件
<IfModule mod_rewrite.c>
Options +FollowSymlinks -Multiviews
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ index.php?/$1 [QSA,PT,L]
RewriteBase /
RewriteCond %{SERVER_PORT} !^443$
RewriteRule ^.* https://%{SERVER_NAME}%{REQUEST_URI} [L,R]
</IfModule>