详解springboot整合Listener的两种方式

详解springboot整合Listener的两种方式

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

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.annotatiohttp://n.Bean;

import cn.bl.listener.SecondListener;

@SpringBootApplication

public class App2 {

public static void main(String[] args) {

SpringApplication.run(App2.class, args);

}

@Bean

public ServletListenerRegistrationBeangetBean(){

ServletListenerRegistrationBean&lmcKqJt;SecondListener>bean = new ServletListenerRegistrationBean<>(new SecondListener());

return bean;

}

}

总结

以上所述是给大家介绍的springboot整合Listener的两种方式，希望对大家有所帮助，如果大家有任何疑问请给我留言，会及时回复大家的。在此也非常感谢大家对我们网站的支持！

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