nginx 80端口想要重新定向到443端口，就是http访问自动跳转到https中怎么实现。可以通过以下方式来配置。

按照下面的格式，对nginx.conf配置文件，80端口会自动转向443端口。这样就可以强制使用SSL证书加密。访问http的时候也会自动跳转至https中。

server {

    listen 80;

    server_name www.域名.com;

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

}

server {

    listen 443;

    server_name www.域名.com;

    root /home/wwwroot;

    ssl on;

    ssl_certificate /etc/nginx/certs/server.crt;

    ssl_certificate_key /etc/nginx/certs/server.key;

    ....

}

其中：${server_name}可以换成$host。重启nginx确保修改保存生效。举例：

server {

    listen 80;

    server_name www.test.com;

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

}

server {

    listen 443;

    server_name www.test.com;

    ssl on;

    ssl_certificate   /etc/pki/CA/certs/214321311540956.pem;

    ssl_certificate_key  /etc/pki/CA/certs/214321311540956.key;

    ssl_session_timeout 5m;

    ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE:ECDH:AES:HIGH:!NULL:!aNULL:!MD5:!ADH:!RC4;

    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;

    ssl_prefer_server_ciphers on;   

    index index.php index.htm index.html;

    error_page 404 /404.html;

    error_page 500 502 503 504 /50x.html;

    location ~ \.php {

    root /alidata/www/html;

    fastcgi_pass unix:/tmp/php-cgi.sock;

    fastcgi_index index.php;

    include   fastcgi.conf;

    set $path_info "";

    set $fastcgi_script_name_new $fastcgi_script_name;

        if ($fastcgi_script_name ~*   "^(.+\.php)(/.+)$"  ) {

            set $fastcgi_script_name_new $1;

        set $path_info $2;

    }

    fastcgi_param   SCRIPT_FILENAME   $document_root$fastcgi_script_name_new;

    fastcgi_param   SCRIPT_NAME   $fastcgi_script_name_new;                    

    fastcgi_param   PATH_INFO $path_info;

    }

    location / {

    root /alidata/www/html;

    index index.php index.html index.htm;

    if (!-e  $request_filename){

        rewrite ^(.*)$ /index.php$1 last;

    }

  }

}

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