停止使用@Scheduled注释的计时器

Question

I have a simple job that using Spring Boot with scheduler annotation, it runs successfully but how can I pause or stop it?

@Component
public class UpAndDown {
    @Scheduled(fixedRate = 2000)
    public void upAndDown() {}
}

Answer 1

The easiest way would be to have a flag that keeps track of whether this functionality is enabled or not. Then, check that flag in your method:

@Component
public class UpAndDown {
    private boolean triggerEnabled = true;

    public void setTriggerEnabled(boolean triggerEnabled) {
        this.triggerEnabled = triggerEnabled;
    }

    @Scheduled(fixedRate = 2000)
    public void upAndDown() {
        if(triggerEnabled) {
            doTheStuff();
        }
    }
}

This will obviously not stop the timer, but it will effectively do what you want it to do, without messing with the infrastructure beans.