SpringBoot中的ApplicationListener事件监听器使用详解

public class TestApplicationEvent extends ApplicationEvent {
    /**
     * Create a new ApplicationEvent.
     *
     * @param test the object on which the event initially occurred (never {@code null})
     */
    public TestApplicationEvent(TestApplication test) {
        super(test);
    }
}

@Component
public class TestApplicationListener implements ApplicationListener<TestApplicationEvent> {
 
    @Override
    public void onApplicationEvent(TestApplicationEvent event) {
 
            System.out.println(event.getSource());
    }
}

@SpringBootApplication
public class CommonsTestApplication {
 
    public static void main(String[] args) {
        ConfigurableApplicationContext applicationContext = SpringApplication
                                                                .run(CommonsTestApplication.class, args);
        TestApplication testApplication = new TestApplication();
        testApplication.setName("zhangsan");
        testApplication.setAge(23);
        TestApplicationEvent testApplicationEvent = new TestApplicationEvent(testApplication);
        applicationContext.publishEvent(testApplicationEvent);//事件发布时，指定的监听器就进行接收
    }
}