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
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@Bean public ServletListenerRegistrationBean servletListenerRegistrationBean(){ ServletListenerRegistrationBean servletListenerRegistrationBean = new ServletListenerRegistrationBean(); servletListenerRegistrationBean.setListener( new IndexListener()); return servletListenerRegistrationBean; } |
IndexListener.Java类:
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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
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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
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@SpringBootApplication @ServletComponentScan public class SpringBootSimpleApplication { public static void main(String[] args) { SpringApplication.run(SpringBootSimpleApplication. class , args); } } |
以上所述是小编给大家介绍的Spring Boot的listener(监听器)简单使用实例详解,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持!
原文链接:http://www.cnblogs.com/web424/p/6755963.html