nginx二级域名自动匹配为子文件夹(通过rewrite)

gistfile1.txt

events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    
    server {
        listen       80;
        server_name  nutz.cn *.nutz.cn;
        
        set $sub_domain "";
        if ($http_host ~ "(.+).nutz.cn$") {
            set $sub_domain $1;
        }
        if ($http_host = "www.nutz.cn") {
            set $sub_domain "";
        }
        if ($sub_domain != "") {
            rewrite /(.+) /$sub_domain/$1 break;
        }
        
        location / {
            root   html;
            index  index.html index.htm;
        }
    }
}