Apache version

If you need to skip the whole site, type the following in the label of the configuration file of the website:

 RewriteEngine on
 RewriteCond %{SERVER_PORT} !^ 443$
 RewriteRule ^(.*)?$  //%{SERVER_NAME}/$1 [L,R]

If a directory is forced to jump, the following code is used:

 RewriteEngine on
 RewriteBase /yourfolder
 RewriteCond %{SERVER_PORT} !^ 443$
 #RewriteRule ^(.*)?$  //%{SERVER_NAME}/$1 [L,R]
 RewriteRule ^.*$ //%{SERVER_NAME}%{REQUEST_URI} [L,R]

Nginx version

In the file for configuring port 80, write the following content.

 server {
 listen 80;
 server_name localhost;
 rewrite ^(.*)$ //$host$1 permanent;
 location / {
 root html;
 index index.html index.htm;
 }

PHP page jump: added in the website php page

 if ($_SERVER["HTTPS"] <> "on")
 {
 $xredir="//".$_ SERVER["SERVER_NAME"].$_ SERVER["REQUEST_URI"];
 header("Location: ".$xredir);
 }

Common code snippet for separate page: It is more suitable to specify a separate https for a certain subpage. Add the following code to the page that needs to be forced to https to process http ->https

 <script language="JavaScript" type="text/JavaScript">
 function redirect()
 {
 var loc = location.href.split(':');
 if(loc[0]=='http')
 {
 location.href='https:'+loc[1];
 }
 }
 onload=redirect
 </script>