springboot集成listener

最新推荐文章于 2022-06-18 16:16:34 发布

原创最新推荐文章于 2022-06-18 16:16:34 发布 · 241 阅读

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本文深入解析了Spring框架中监听器的使用，包括requestListener和httpSessionListener的创建与注册过程，探讨了它们如何在Web应用中捕获请求和会话事件。

首先，listener不只一种。有监听request请求的，有监听session的。

requestListener

新建一个requestListener

@Component
public class MyListener implements ServletRequestListener {

    @Override
    public void requestDestroyed(ServletRequestEvent sre) {
        System.out.println("MyListener destroy...");
    }

    @Override
    public void requestInitialized(ServletRequestEvent sre) {
        System.out.println("MyListener init....");
    }
}

注册requestListener

public class LisenterConfiguration {
    @Bean
    public ServletListenerRegistrationBean getListenerBean(){
        ServletListenerRegistrationBean bean = new ServletListenerRegistrationBean();
        MyListener myListener = new MyListener();
        bean.setListener(myListener);
        //
        return bean;
    }
}

httpSessionListener

创建httpSessionListener

代码：

@Component
public class MySessionListener implements HttpSessionListener {
    private static Logger logger = LoggerFactory.getLogger(MySessionListener.class);
    public MySessionListener(){
        System.out.println("MySessionListener init:");
    }
    public void sessionCreated(HttpSessionEvent se) {

        logger.info("MySessionListener create,id: {}",se.getSession().getId());

    }

    public void sessionDestroyed(HttpSessionEvent se) {
        logger.info("MySessionListener destroyed,id: {}",se.getSession().getId());
    }

}

注册httpSessionListener

@Configuration
public class LisenterConfiguration {
    @Bean
    public ServletListenerRegistrationBean getListenerBean(){
        ServletListenerRegistrationBean bean = new ServletListenerRegistrationBean();
        MyListener myListener = new MyListener();
        MySessionListener mySessionListener= new MySessionListener();
        bean.setListener(myListener);
        bean.setListener(mySessionListener);
        return bean;
    }
    
}