EJB 应用程序关闭挂钩

Question

How would i add a shutdown hook (just like the JVM Shutdown Hook ) to listen (get notification) when an EJB application is deployed/undeployed (to stop the JMX MServerBean)?

I could use a ServletContextListener, unfortunately this an EJB jar.

Answer 1

Use @Singleton bean and implement @PreDestroy :

@Startup
@Singleton
public class HookBean {

    @PreDestroy
    void wholeApplicationShuttingDown {
    }
}

UPDATE: Just noticed ejb-3.0 tag. @Singleton was added in 3.1. But still maybe you will find it useful.

Answer 2

使用带有@PreDestroy方法的无状态 Bean