如何在shopware 6中访问订阅者中的请求数据

use Shopware\Core\Framework\Event\BusinessEvent;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\KernelEvents;

class MySubscriber implements EventSubscriberInterface
{
    /**
     * @EventSubscriber()
     */
    public static function getSubscribedEvents(): array
    {
        return [
            KernelEvents::CONTROLLER => 'onControllerEvent',
        ];
    }

    public function onControllerEvent(BusinessEvent $event, string $eventName, Request $request): void
    {
        // 在这里可以访问请求数据
        $requestData = $request->request->all();
        
        // 处理请求数据的逻辑
        // ...
    }
}