springboot listener使用配置

一 ，springboot使用listener有两种方式一种是通过ServletListenerRegistrationBean代码注册，一种是通过注解@WebListener

1  @WebListener方式

需要在主程序Applicaiton上开启 @ServletComponentScan

新建listener类 选择实现的listener接口

这里选择用ServletContextListener 代码如下

package com.kerry.listener;

import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.annotation.WebListener;

/**
 * Application Lifecycle Listener implementation class MyServletContextListener
 *
 */
/**
 * 通过  @WebListener 或者 使用代码注册  ServletListenerRegistrationBean
 * @author Administrator
 *
 */
@WebListener
public class MyServletContextListener implements ServletContextListener {

	@Override
	public void contextInitialized(ServletContextEvent sce) {
		System.out.println(sce.getServletContext().getServletContextName()+" init");
		
	}

	@Override
	public void contextDestroyed(ServletContextEvent sce) {
		System.out.println(sce.getServletContext().getServletContextName()+" destroy");
		
	}
}

2，通过ServletListenerRegistrationBean代码注册

以HttpSessionListener示例

package com.kerry.listener;

import javax.servlet.annotation.WebListener;
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;

/**
 * Application Lifecycle Listener implementation class MyHttpSessionListener
 * 通过  @WebListener 或者 使用代码注册  ServletListenerRegistrationBean
 */
public class MyHttpSessionListener implements HttpSessionListener {

    /**
     * Default constructor. 
     */
    public MyHttpSessionListener() {
        // TODO Auto-generated constructor stub
    }

	/**
     * @see HttpSessionListener#sessionCreated(HttpSessionEvent)
     */
    public void sessionCreated(HttpSessionEvent se)  { 
         System.out.println(se.getSession().getId()+" session create");
    }

	/**
     * @see HttpSessionListener#sessionDestroyed(HttpSessionEvent)
     */
    public void sessionDestroyed(HttpSessionEvent se)  { 
         System.out.println(se.getSession().getId()+" session destroy");
    }
	
}

ListenerConfigure类

package com.kerry.configure;

import org.springframework.boot.web.servlet.ServletListenerRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import com.kerry.listener.MyHttpSessionListener;



@Configuration
public class ListenerConfigure {
	
	@Bean
	public ServletListenerRegistrationBean serssionListenerBean(){
		ServletListenerRegistrationBean 
		sessionListener = new ServletListenerRegistrationBean(new MyHttpSessionListener());
		return sessionListener;
	}
	
	
//	@Bean
//	public ServletListenerRegistrationBean servletContextListenerBean(){
//		ServletListenerRegistrationBean 
//		sessionListener = new ServletListenerRegistrationBean(new MyServletContextListener());
//		return sessionListener;
//	}

}

附上项目代码结构：