location / {
    add_header Access-Control-Allow-Origin *;
    add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS';
    add_header Access-Control-Allow-Headers 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization';
    if ($request_method = 'OPTIONS') {
        return 204;
    }
    if (!-e $request_filename){
	rewrite  ^(.*)$  /index.php?s=$1  last;   break;
    }
}

nginx规则