将用户路由到cakephp中的webroot子文件夹

I would like the / of a website to go to a sub folder in webroot like /app/webroot/frontend/ and everything /admin to the standard controllers and actions of cakephp.

The reason for this is, I have a standard html page as front end which gets data using ajax from cakephp that is located in the root. I do not want to use a redirect so that when users go to the site they are redirected to /app/webroot/frontend (seeing this in the URL). The admin is now accessible through /

Or is it wise to move the whole cakephp app to a sub folder admin and have the site run in the root / ?

I think you cannot route directly from routes config, because this is designed to work with MVC.

Todo that with clear MVC code, follow the steps bellow.

Create a MainController at /Controller/MainController with

<?php
class MainController extends AppController {
    public function index(){
        $this->redirect('/frontend/index.html');
    }
}
?>

Change /Config/route.php, locate the default route rule and replace with:

Router::connect('/', array('controller' => 'main', 'action' => 'index'));

Than, enjoy!