如何在shopware 6控制器中发送post请求？

use Shopware\Core\Framework\Routing\Annotation\RouteScope;
use Shopware\Core\Framework\Routing\Annotation\Method;
use Shopware\Core\Framework\Routing\Annotation\Route;
use Shopware\Core\Framework\Context;
use Symfony\Component\HttpFoundation\Request;

/**
 * @RouteScope(scopes={"api"})
 */
class CustomController extends ApiController
{
    /**
     * @Route("/api/v{version}/custom", name="api.custom.post", methods={"POST"})
     *
     * @param Request $request
     * @param Context $context
     *
     * @return JsonResponse
     */
    #[Method('POST')]
    #[Route('/api/v{version}/custom', name: 'api.custom.post', methods: ['POST'])]
    public function postAction(Request $request, Context $context): JsonResponse
    {
        $postData = $request->request->all();
        // 处理POST请求数据的逻辑
        // ...

        return new JsonResponse(['success' => true]);
    }
}

<menuitem
    id="custom_menu_item"
    title="Custom"
    route-name="api.custom.post"
    parent="sw-extension"
    position="99">
</menuitem>