ServletContextListener使用

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本文介绍了一个具体的ServletContextListener实现示例，展示了如何通过监听器在Web应用启动和关闭时执行特定的操作。具体包括contextInitialized和contextDestroyed两个方法的具体实现。

ServletContextListener使用

@WebListener
public class MyServletContextListener implements ServletContextListener,
        HttpSessionListener, HttpSessionAttributeListener {

    // -------------------------------------------------------
    // ServletContextListener implementation
    // -------------------------------------------------------
    @Override
    public void contextInitialized(ServletContextEvent sce) {
      /* This method is called when the servlet context is
         initialized(when the Web application is deployed). 
         You can initialize servlet context related data here.
      */
        System.out.println("context init");
    }
@Override
    public void contextDestroyed(ServletContextEvent sce) {
      /* This method is invoked when the Servlet Context 
         (the Web application) is undeployed or 
         Application Server shuts down.
      */
        System.out.println("context destroy");
    }
}