nginx automatically jumps to www

Edit the conf/nginx.conf file in the ngnix installation directory

server {
　　listen 80;
　　server_name www.xxx.com xxx.com;
　　if ($host != 'www.xxx.com') {
　　rewrite ^/(.*)$ http://www.xxx.com/$1 permanent;
　　}
}

server {
　　listen 443;
　　server_name www.xxx.com xxx.com;
　　if ($host != 'www.xxx.com') {
　　rewrite ^/(.*)$ https://www.xxx.com/$1 permanent;
　　}
}

Tips

xxx.com is your website address

Reference:https://blog.csdn.net/gdali/article/details/108941584