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applicationEvent |

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# 专门监听applicationContent的各种事件

# 实现接口 ApplicationListener<E extends ApplicationEvent>

# 通过该接口的泛型来决定要监听的事件(ApplicationEvent子类)

SpringApplicationEvent

ApplicationStartingEvent

....

# demo

@Component

public class ApplicationStartingListener implements ApplicationListener<SpringApplicationEvent> {

private static final Logger LOGGER = LoggerFactory.getLogger(ApplicationStartingListener.class);

@Autowired

private ApplicationContext applicationContext;

@Override

public void onApplicationEvent(SpringApplicationEvent event) {

LOGGER.debug("application 启动ok");

//注入 root context

SpringContext.setApplicationContext(this.applicationContext);

//启动UDP服务

Server.start();

}

}