@EventListener
	public void onAckEvent(AckRemoteApplicationEvent event)
			throws JsonProcessingException {
		System.out.printf("Server [port : %d] listeners on %s\n", localServerPort,
				objectMapper.writeValueAsString(event));
	}
Listener on the {@link UserRemoteApplicationEvent}.
@param event {@link UserRemoteApplicationEvent}
spring-cloud-alibaba-examples/spring-cloud-bus-rocketmq-example/src/main/java/com/alibaba/cloud/examples/rocketmq/RocketMQBusApplication.java