正向代理到指定泛域名的nginx配置

    resolver 8.8.8.8; #必须配置！！！不然无法代理

    server {
        listen       80 default_server;
        listen       [::]:80 default_server;
        server_name  _;
        root         /usr/share/nginx/html;
        # Load configuration files for the default server block.
        include /etc/nginx/default.d/*.conf;

        location / {
            #default_type text/html;
             
            #正则截取域名前缀，例如www.xxx.com截取只要www
            if ( $host ~* (.*)\.(.*)\. ) {
                set $domain $1;
            }
            set $url https://$domain.xxx.com$request_uri;
            proxy_pass $url;


            #return 200 $domain;
            #return 200 $url;
        }
    }