利用 Spring 工廠加載機制，實例化 ApplicationListener 實現類，並排序對象集合
創建應用事件監聽器
創建類實現接口ApplicationListener,可以使用@Order或實現Orderd接口進行排序
@Order(Ordered.HIGHEST_PRECEDENCE) public class HelloWorldApplicationListener implements ApplicationListener{ @Override public void onApplicationEvent(ContextRefreshedEvent event) { System.out.println("HelloWorld : " + event.getApplicationContext().getId() + " , timestamp : " + event.getTimestamp()); } }
public class AfterHelloWorldApplicationListener implements ApplicationListener,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
# ApplicationListener
org.springframework.context.ApplicationListener=
com.imooc.diveinspringboot.listener.AfterHelloWorldApplicationListener,
com.imooc.diveinspringboot.listener.HelloWorldApplicationListener,
輸出
HelloWorld : application , timestamp : 1591105193644
AfterHelloWorld : application , timestamp : 1591105193644
[zhang3221994 ] SpringBoot加載應用事件監聽器代碼實例已經有221次圍觀