spring系列课程 spring cloud（mercyblitze）_mercyblitz nacos-优快云博客

这是一门关于Spring Cloud的实战课程，涵盖了从云原生应用到服务调用的多个核心模块，包括配置客户端、服务发现、高可用服务治理、负载均衡、服务短路、消息驱动整合等内容，通过源码解读帮助开发者深入理解Spring Cloud的工作原理。

第一节云原生应用（Cloud Native Applications） (课件) [问答]

package com.ikadmin.sr.springcloudlesson1.demo;

import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;

public class SpringApplicationDemo {

    public static void main(String[] args) {
        AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(DefaultApplicationListener.class);
//        context.addApplicationListener(new DefaultApplicationListener());
//        context.register(DefaultApplicationListener.class);
//        context.refresh();
        context.publishEvent(new DefaultApplicationEvent(new Double(1.0)));
        context.publishEvent(new DefaultApplicationEvent("test"));
        context.publishEvent(new DefaultApplicationEvent(1));


//        context.publishEvent(new DefaultApplicationEvent(null));
    }

    @Component
    private static class DefaultApplicationListener implements ApplicationListener<DefaultApplicationEvent> {

        @Override
        public void onApplicationEvent(DefaultApplicationEvent event) {
            System.err.printf("DefaultApplicationEvent sourc