springboot关于容器启动事件总结

package com.neo.filter;

import org.springframework.boot.context.event.ApplicationStartingEvent;
import org.springframework.context.ApplicationListener;

public class ApplicationStartingEventListener implements ApplicationListener {
  @Override
  public void onApplicationEvent(ApplicationStartingEvent arg0) {
    System.err.println("ApplicationStartingEventListener");
  }

}

package com.neo.filter;

import org.springframework.boot.context.event.ApplicationStartedEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.core.Ordered;

public class ApplicationStartedEventListener implements ApplicationListener,Ordered {

  @Override
  public void onApplicationEvent(ApplicationStartedEvent ev) {
    System.out.println("ApplicationStartedEventListener1");
  }
  @Override
  public int getOrder() {
    return 1;
  }

}

package com;


import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

import com.neo.filter.ApplicationStartedEventListener;
import com.neo.filter.ApplicationStartedEventListener2;
import com.neo.filter.ApplicationStartingEventListener;

@SpringBootApplication
public class DemoApplication {

  public static void main(String[] args) {
    SpringApplication app=new SpringApplication(DemoApplication.class);
    app.addListeners(new ApplicationStartedEventListener());
    app.addListeners(new ApplicationStartingEventListener());
    app.addListeners(new ApplicationStartedEventListener2());
    app.run(args);
  }
}