详解springboot整合Listener的两种方式

2021-06-19 10:28SUBEYZ Java教程

这篇文章主要介绍了springboot整合Listener的两种方式,非常不错，具有一定的参考借鉴价值，需要的朋友可以参考下

1.通过注解

编写启动类

									package cn.bl;

									import org.springframework.boot.springapplication;

									import org.springframework.boot.autoconfigure.springbootapplication;

									import org.springframework.boot.web.servlet.servletcomponentscan;

									@springbootapplication

									@servletcomponentscan

									public class app {

									 public static void main(string[] args) {

									 springapplication.run(app.class, args);

									 }

									}

编写一个监听器

				?

									package cn.bl.listener;

									import javax.servlet.servletcontextevent;

									import javax.servlet.servletcontextlistener;

									import javax.servlet.annotation.weblistener;

									@weblistener

									public class firstlistener implements servletcontextlistener{

									 @override

									 public void contextinitialized(servletcontextevent sce) {

									 system.out.println("init .. ");

									 }

									 @override

									 public void contextdestroyed(servletcontextevent sce) {

									 system.out.println("desroyed .. ");

									 }

									}

当执行app的时候

详解springboot整合Listener的两种方式

2.通过函数

				?

									package cn.bl.listener;

									import javax.servlet.servletcontextevent;

									import javax.servlet.servletcontextlistener;

									public class secondlistener implements servletcontextlistener{

									 @override

									 public void contextinitialized(servletcontextevent sce) {

									 system.out.println("second servletlistener init .. ");

									 }

									 @override

									 public void contextdestroyed(servletcontextevent sce) {

									 system.out.println("second servletlistener destroy .. ");

									 }

									}

									package cn.bl;

									import org.springframework.boot.springapplication;

									import org.springframework.boot.autoconfigure.springbootapplication;

									import org.springframework.boot.web.servlet.servletlistenerregistrationbean;

									import org.springframework.context.annotation.bean;

									import cn.bl.listener.secondlistener;

									@springbootapplication

									public class app2 {

									 public static void main(string[] args) {

									 springapplication.run(app2.class, args);

									 }

									 @bean

									 public servletlistenerregistrationbean<secondlistener>getbean(){

									 servletlistenerregistrationbean<secondlistener>bean = new servletlistenerregistrationbean<>(new secondlistener());

									 return bean;

									 }

									}