user root;  

events {

    worker_connections  1024;

}

http {

    include       mime.types;

    default_type  text/html;

    gzip  on;

    rewrite_log on;

    root /opt/demoapps;

    real_ip_header     X-Forwarded-For;

    server {

       listen 80;

       charset utf-8;

       default_type text/html;

       location / {

           index index.html index.htm index;

       }

       location ~* ^/business/detail {

            if ($args ~* "itemId=(\d+)") {

                set $w1 $1;

                set $args ''; 

                rewrite .* /business$w1 redirect;

            }

        }

     }

}