我的应用程序停止时该如何捕捉？

Question

I hava a spring-boot application and I'm using quartz to create jobs. I run my application like ./bin/app start I need to catch in my class that implements Job when my application stops like: ./bin/app stop Does anybody know how can I do that? I tried to implement DisposableBean using the method destroy() but doesn't work. My main class in something like this:

public class Main implements CommandLineRunner {
    public static void main(String[] args) throws Exception {
       .....

The Quartz create jobs and in my job create a variable "lock" like this:

public class MyJob implements Job, DisposableBean {
private RLock lock = redissonClient.getFairLock(jobName);
    .....

    @Override
    public void destroy() throws Exception {
        if(lock != null) {
            lock.forceUnlock();
        }
    }

I need force the unlock when my application stop in the middle of execution so I need catch the stop in MyJob class not in the Main class. Thank you in advance!!

Answer 1

You should be able to attach an event observer to the application context, for example:

  public class MyJob implements Job, DisposableBean {

      public MyJob(ApplicationContext context) {
        ((ConfigurableApplicationContext)context).addApplicationListener(
           (ContextClosedEvent event) -> onContextClosed()
        );
      }

      private void onContextClosed() {
         ...
      }
  }

Answer 2

Use the @PreDestroy annotation. Annotate the method with @PreDestroy which you want to execute on stop.

@PreDestroy
public void onExit() {
   //STOP FROM THE LIFECYCLE
}