利用 Spring 工廠加載機(jī)制，實(shí)例化 ApplicationListener 實(shí)現(xiàn)類，并排序?qū)ο蠹?/p>

創(chuàng)建應(yīng)用事件監(jiān)聽器

創(chuàng)建類實(shí)現(xiàn)接口ApplicationListener,可以使用@Order或?qū)崿F(xiàn)Orderd接口進(jìn)行排序

@Order(Ordered.HIGHEST_PRECEDENCE)public class HelloWorldApplicationListener implements ApplicationListener<ContextRefreshedEvent> { @Override public void onApplicationEvent(ContextRefreshedEvent event) { System.out.println('HelloWorld : ' + event.getApplicationContext().getId()+ ' , timestamp : ' + event.getTimestamp()); }}

public class AfterHelloWorldApplicationListener implements ApplicationListener<ContextRefreshedEvent>,Ordered { @Override public void onApplicationEvent(ContextRefreshedEvent event) { System.out.println('AfterHelloWorld : ' + event.getApplicationContext().getId()+ ' , timestamp : ' + event.getTimestamp()); } @Override public int getOrder() { return Ordered.LOWEST_PRECEDENCE; }}

在spring.properties中配置

# ApplicationListenerorg.springframework.context.ApplicationListener=com.imooc.diveinspringboot.listener.AfterHelloWorldApplicationListener,com.imooc.diveinspringboot.listener.HelloWorldApplicationListener,

輸出

HelloWorld : application , timestamp : 1591105193644AfterHelloWorld : application , timestamp : 1591105193644

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