if ($http_accept_language ~* ^zh){
set $lang "/index_cn.jsp";
}
if ($http_accept_language !~* ^zh){
set $lang "/index_en.jsp";
}
location =/ {
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_pass http://localhost:8080$lang;
}