php - Symfony 事件订阅者对调度没有反应

Question

我正在使用带有 Autowiring 调度程序的服务来调度事件。为了测试事件，我在发送事件之前添加了一个事件订阅者。但是，已注册的订阅者没有记录我期望的方法。

事件:

<?php

namespace App\Event;

use Symfony\Component\EventDispatcher\Event;

class GameStartEvent extends Event {

}

订阅者:

<?php

namespace App\Event;

use Psr\Log\LoggerAwareTrait;
use Psr\Log\LoggerInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;

class GameStartSubscriber implements EventSubscriberInterface {

    use LoggerAwareTrait;

    public function __construct(LoggerInterface $logger) {
        $this->setLogger($logger);
    }

    public static function getSubscribedEvents() {
        return [
            "game.started" => [
                [
                    'logEvent',
                ],
            ]
        ];
    }

    public function logEvent(GameStartEvent $event): void {
        $this->logger->info("the game has started");
    }
}

这是使用过的服务，它应该分派(dispatch)事件，事件注册应该在未来的其他地方发生。我只是在这里做测试:

<?php

namespace App\Service;

use App\Event\GameStartEvent;
use App\Event\GameStartSubscriber;
use Psr\Log\LoggerInterface;
use Psr\SimpleCache\CacheInterface;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;

class GameCacheService {

    private $eventDispatcher;

    private $logger;

    public function __construct(EventDispatcherInterface $eventDispatcher, LoggerInterface $logger) {
        $this->eventDispatcher = $eventDispatcher;
        $this->logger = $logger;
    }

    // some other methods...

    function startGame() {
        // some code...

        $gameStartSubscriber = new GameStartSubscriber($this->logger);
        $this->eventDispatcher->addSubscriber($gameStartSubscriber);

        $this->eventDispatcher->dispatch("game.started", new GameStartEvent());   
    }
}

调用服务方法后，没有记录指定的记录器消息。

Answer 1

<删除>代替`$this->eventDispatcher->dispatch("game.started", new GameStartEvent());`和`$this->eventDispatcher->dispatch("game.started", $event);`

你似乎至少在 App/Entity 中有你的事件，默认情况下它不是 Autowiring 的，也不应该。看看你的 services.yml，它应该被排除在 Autowiring 之外。将你的东西移动到类似 App/Event

的地方