监听器（Listener）的注册方法和 Servlet 一样，有两种方式：代码注册或者注解注册
1.代码注册方式
通过代码方式注入过滤器
代码语言：javascript代码运行次数：0运行复制@Bean
public ServletListenerRegistrationBean servletListenerRegistrationBean(){
ServletListenerRegistrationBean servletListenerRegistrationBean = new ServletListenerRegistrationBean();
servletListenerRegistrationBean.setListener(new IndexListener());
return servletListenerRegistrationBean;
}IndexListener.Java类：
代码语言：javascript代码运行次数：0运行复制package com.example.Listener;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
public class IndexListener implements ServletContextListener{
@Override
public void contextDestroyed(ServletContextEvent arg0) {
System.out.println("IndexListener contextDestroyed method");
}
@Override
public void contextInitialized(ServletContextEvent arg0) {
System.out.println("IndexListener contextInitialized method");
}
}2.注解方式
通过注解方式注入过滤器
IndexListener2.Java类
代码语言：javascript代码运行次数：0运行复制package com.example.Listener;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.annotation.WebListener;
@WebListener
public class IndexListener2 implements
ServletContextListener{
@Override
public void contextDestroyed(ServletContextEvent arg0) {
System.out.println("IndexListener2 contextDestroyed method");
}
@Override
public void contextInitialized(ServletContextEvent arg0) {
System.out.println("IndexListener2 contextInitialized method");
}
}把注解加到入口处启动即可
代码语言：javascript代码运行次数：0运行复制@SpringBootApplication
@ServletComponentScan
public class SpringBootSimpleApplication {
public static void main(String[] args) {
SpringApplication.run(SpringBootSimpleApplication.class, args);
}
}以上所述是Spring Boot的listener(监听器)简单使用实例详解，希望对大家有所帮助