在 Nginx 上将 http 重定向到 https 不起作用

Question

我有一台在 DigitalOcean 上运行的服务器，并且有一个我购买的域名。 我的服务器上运行着 nginx，我试图将我的 http 请求重定向到 https，但我尝试过的任何方法都不起作用。 我知道它应该非常简单，我已经查看了数十个示例，但由于某种原因我的仍然无法正常工作。

现在这就是我所拥有的

server {
    listen 80;
    server_name www.example.com example.com;
    listen [::]:80;
    return 301 https://$host$request_uri;   
}
server {
    # SSL configuration
    #
    listen 443 ssl;
    # listen [::]:443 ssl;

    root /var/www/example.com;

    # Add index.php to the list if you are using PHP
    index index.html index.htm index.nginx-debian.html index.php;

    server_name example.com www.example.com;
    ssl_certificate_key /etc/nginx/keys/example.key;
    ssl_certificate /etc/nginx/keys/example.com.chained.crt;

    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_prefer_server_ciphers on;
    ssl_ciphers 'EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH';

}

这有什么问题或者我应该改变什么吗？ 我的网站运行良好，并且浏览器中显示锁定图标，表明如果我输入 https://example.com 或 https://www.example.com

，该网站是安全的

但是如果我只使用 example.com http://example.com 或 www.example.com 它说找不到该页面。

Answer 1

示例脚本 nginx :

server 
{

        listen 443 default ssl;
        listen [::]:443 ssl;
        root /var/www/html/api_mobile/public;

        include snippets/ssl-params.conf;

        add_header X-Frame-Options "SAMEORIGIN";
        add_header X-Content-Type-Options "nosniff";
        index index.html index.php index.htm index.nginx-debian.html;

        server_name sitename.com;

        charset utf-8;
        location / {
             if ($scheme ="http") {
                # redirect all non api traffic to https block
                return 301 https://$server_name$request_uri;
             }           

            try_files $uri $uri/ /index.php?$query_string;
        }

        location = /favicon.ico { access_log off; log_not_found off; }
        location = /robots.txt  { access_log off; log_not_found off; }


        error_page 404 /index.php;
        location ~ \.php$ {
            fastcgi_pass unix:/run/php/php8.2-fpm.sock;
            fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
            include fastcgi_params;
        }

    ssl_certificate /etc/letsencrypt/live/sites/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/site/privkey.pem; # managed by Certbot
}

关于计划条件：

if ($scheme ="http") 
{
                # redirect all non api traffic to https block
                return 301 https://$server_name$request_uri;
}   

它在一个端口 443 https 上重定向的核心强制 http 到 https