我正在使用 Play Framework 2.6.x 創建一個在特定時間（例如凌晨 3 點）運行任務的簡單 cron 作業。但現在我陷入了一個簡單的計劃任務：我創建了一個演員：package actors;import akka.actor.UntypedActor;import org.slf4j.LoggerFactory;public class DoSomethingActor extends UntypedActor {    private static final org.slf4j.Logger log = LoggerFactory.getLogger(DoSomethingActor.class);    @Override    public void onReceive(final Object message) throws Throwable {        log.info("Write your crone task or simply call your method here that perform your task " + message);    }}然后我創建了一個 Schedule 類，每次我設置時調用 Actor：package tasks;import java.util.concurrent.TimeUnit;import javax.inject.Inject;import javax.inject.Named;import javax.inject.Singleton;import akka.actor.ActorRef;import akka.actor.ActorSystem;import akka.actor.Cancellable;import scala.concurrent.duration.Duration;@Singletonpublic class DoSomethingScheduler {    @Inject    public DoSomethingScheduler(final ActorSystem system,            @Named("do-something-actor") final ActorRef doSomethingActor) {        final Cancellable scheduler;        final int timeDelayFromAppStart = 0;        final int timeGapInSeconds = 1; //Here you provide the time delay for every run        system.scheduler().schedule(                Duration.create(timeDelayFromAppStart, TimeUnit.MILLISECONDS), //Initial delay when system start                Duration.create(timeGapInSeconds, TimeUnit.SECONDS),     //Frequency delay for next run                doSomethingActor,                "message for onreceive method of doSomethingActor",                system.dispatcher(),                null);    }}最后，我將這些類綁定到一個模塊類中：package modules;import actors.DoSomethingActor;import com.google.inject.AbstractModule;import play.libs.akka.AkkaGuiceSupport;import tasks.DoSomethingScheduler;在這些事情之后，我運行了該應用程序，但它并沒有像我預期的那樣工作。我希望它每 1 秒顯示一次日志記錄，但沒有任何反應。你能幫我修一下嗎？太感謝了！