在http中将http重定向到https

    ServerName example.com
    Redirect permanent / https://example.com/
</VirtualHost>

server {
    listen 80;
    server_name example.com;
    return 301 https://example.com$request_uri;
}

<?php
if ($_SERVER['HTTPS'] !== 'on') {
    $redirect_url = 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
    header('HTTP/1.1 301 Moved Permanently');
    header('Location: ' . $redirect_url);
    exit();
}
?>

const express = require('express');
const app = express();

app.use((req, res, next) => {
    if (req.secure) {
        next();
    } else {
        res.redirect('https://' + req.headers.host + req.url);
    }
});