springboot组件初始化后的4种启动方式及常用方法

import javax.annotation.PostConstruct;
@Component
public class MyStartupTask {
    @PostConstruct
    public void init() {
        // 执行启动任务
    }
}

@Component
public class MyStartupTask implements CommandLineRunner {
    @Override
    public void run(String... args) throws Exception {
        // 执行启动任务
    }
}

@Component
public class MyStartupTask implements ApplicationRunner {
    @Override
    public void run(ApplicationArguments args) throws Exception {
        // 执行启动任务
    }
}

@Component
public class MyStartupEventPublisher {
    @Autowired
    private ApplicationContext applicationContext;
    public void publishEvent() {
        applicationContext.publishEvent(new MyStartupEvent(this));
    }
}
@Component
public class MyStartupEventListener implements ApplicationListener<MyStartupEvent> {
    @Override
    public void onApplicationEvent(MyStartupEvent event) {
        // 执行启动任务
    }
}

@Configuration
public class AppConfig {
    @Bean(initMethod = "init")
    public MyBean myBean() {
        return new MyBean();
    }
}
public class MyBean {
    public void init() {
        // 执行启动任务
    }
}