csrf_exclude_uris 问题

desou

$config['csrf_protection'] = true;
$config['csrf_token_name'] = 'csrf_token_test';
$config['csrf_cookie_name'] = 'csrf_cookie_test';
$config['csrf_expire'] = 7200;
$config['csrf_regenerate'] = TRUE;
$config['csrf_exclude_uris'] = array('/assistant_dashboard/upload.html');
我提交表单到/assistant_dashboard/upload.html，还是需要验证，要怎么加入白名单？