if (!-e $request_filename)
{
rewrite ^/(?!index\.php|uploadfiles|a|update|templates|apicache|task|install|cache|backup|js|robots\.txt|google\.xml|sitemap_baidu\.xml|xtaoAuth\.txt|favicon\.ico|xtaoAuth\.html|root\.txt|bdunion\.txt|baidu_verify_pssAMHgs9r\.html)(.+)$ /index.php/$1 last;
break;
}