Nginx配置https， 80端口重定向443

server {
    listen       443 ssl;
    server_name  www.r.cn;
    charset utf-8;
    access_log  /var/log/nginx/www/access.log;
    add_header X-Xss-Protection 1;
    ssl_certificate /etc/nginx/cert/证书.pem;
    ssl_certificate_key /etc/nginx/cert/证书.key;

    location / {
        try_files /_not_exists_ @backend;
    }
    location @backend {
        proxy_set_header X-Forwarded-For $remote_addr;
        proxy_set_header Host            $http_host;
        proxy_set_header   X-Forwarded-Proto $scheme;
    }
}

server {
    listen 80;
    server_name 域名;
    rewrite ^(.*)$ https://${server_name}$1 permanent;
}