Perisian tengah rangka kerja Symfony: menyediakan pengendalian ralat dan fungsi pengurusan pengecualian

composer require symfony/symfony

use AppKernel;
use SymfonyComponentDebugDebug;
use SymfonyComponentDotenvDotenv;
use SymfonyComponentHttpFoundationRequest;

require dirname(__DIR__).'/config/bootstrap.php';

if ($_SERVER['APP_DEBUG']) {
    umask(0000);

    Debug::enable();
}

$kernel = new Kernel($_SERVER['APP_ENV'], (bool) $_SERVER['APP_DEBUG']);
$request = Request::createFromGlobals();
$response = $kernel->handle($request);
$response->send();
$kernel->terminate($request, $response);

use SymfonyBundleFrameworkBundleKernelMicroKernelTrait;
use SymfonyComponentDependencyInjectionContainerBuilder;
use SymfonyComponentHttpFoundationResponse;
use SymfonyComponentHttpKernelExceptionHttpExceptionInterface;
use SymfonyComponentHttpKernelKernel as BaseKernel;
use SymfonyComponentRoutingRouteCollectionBuilder;

class Kernel extends BaseKernel
{
    use MicroKernelTrait;

    protected function configureContainer(ContainerBuilder $c, LoaderInterface $loader)
    {
        // 配置服务容器
    }

    protected function configureRoutes(RouteCollectionBuilder $routes)
    {
        // 配置路由
    }

    protected function build(ContainerBuilder $container)
    {
        $container->register('middleware.fault_tolerant', FaultTolerantMiddleware::class)
            ->setAutowired(true);
    }

    protected function renderException(Throwable $exception): Response
    {
        if ($exception instanceof HttpExceptionInterface) {
            $statusCode = $exception->getStatusCode();
        } else {
            $statusCode = Response::HTTP_INTERNAL_SERVER_ERROR;
        }

        $response = new Response();
        $response->setStatusCode($statusCode);
        $response->setContent($exception->getMessage());

        return $response;
    }
}

use SymfonyComponentHttpFoundationRequest;
use SymfonyComponentHttpFoundationResponse;
use SymfonyComponentRoutingAnnotationRoute;

class LoginController
{
    /**
     * @Route("/login", name="login", methods={"POST"})
     */
    public function login(Request $request): Response
    {
        $username = $request->request->get('username');
        $password = $request->request->get('password');

        if ($username === 'admin' && $password === 'secret') {
            return new Response('Login successful');
        } else {
            throw new Exception('Invalid username or password');
        }
    }
}