Spring事件监听机制ApplicationEvent方式

public class MyApplicationEvent extends ApplicationEvent {
    private Student student;
    public Student getStudent() {
        return student;
    }
    public void setStudent(Student student) {
        this.student = student;
    }
    public MyApplicationEvent(Object source) {
        super(source);
    }
    public MyApplicationEvent(Object source, Student student) {
        super(source);
        this.student = student;
    }
}

@Component
public class MyApplicationListener implements ApplicationListener<MyApplicationEvent> {
    private static final Logger LOGGER = LoggerFactory.getLogger(MyApplicationListener.class);
    @Override
    public void onApplicationEvent(MyApplicationEvent myApplicationEvent) {
        Student student = myApplicationEvent.getStudent();
        LOGGER.info("学生对象是={}", JSONObject.toJSONString(student));
    }
}

@Component
public class AsyncApplicationListener {
    private static final Logger LOGGER = LoggerFactory.getLogger(AsyncApplicationListener.class);
    @EventListener
    @Async
    public void listener(MyApplicationEvent myApplicationEvent) {
        Student student = myApplicationEvent.getStudent();
        LOGGER.info("通过@EventListener获取学生对象信息={}", JSONObject.toJSONString(student));
    }
}

@Component
public class MySmartApplicationListener implements SmartApplicationListener {
    private static final Logger LOGGER = LoggerFactory.getLogger(MySmartApplicationListener.class);
    @Override
    public boolean supportsEventType(Class<? extends ApplicationEvent> aClass) {
        return aClass == MyApplicationEvent.class;
    }
    @Override
    public boolean supportsSourceType(Class<?> sourceType) {
        return sourceType == ApplicationRunnerTest.class;
    }
    @Override
    public int getOrder() {
        return 0;
    }
    @Override
    public void onApplicationEvent(ApplicationEvent applicationEvent) {
        MyApplicationEvent myApplicationEvent = (MyApplicationEvent) applicationEvent;
        LOGGER.info("通过MySmartApplicationListener 获取学生对象信息={}",
                JSONObject.toJSONString(myApplicationEvent.getStudent()));
    }
}

@Autowired
private ApplicationContext applicationContext;
applicationContext.publishEvent(new MyApplicationEvent(this, new Student("爱琴孩", 18)));