时间：2022-11-30 10:56:21 | 栏目：JAVA代码 | 点击：次
利用 Spring 工厂加载机制，实例化 ApplicationListener 实现类，并排序对象集合
创建应用事件监听器
创建类实现接口ApplicationListener,可以使用@Order或实现Orderd接口进行排序
@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
# ApplicationListener
org.springframework.context.ApplicationListener=\
com.imooc.diveinspringboot.listener.AfterHelloWorldApplicationListener,\
com.imooc.diveinspringboot.listener.HelloWorldApplicationListener,\
输出
HelloWorld : application , timestamp : 1591105193644
AfterHelloWorld : application , timestamp : 1591105193644