Webapp clean-up

ShutdownListener.java

public class ShutdownListener implements ServletContextListener {
    
    @Override
    public void contextDestroyed(ServletContextEvent sce) {

         ApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(sce.getServletContext());
         P p = (P) ctx.getBean("proc");
         p.shutdown();
    }
}

web.xml

<listener>
    <listener-class>com.example.html.events.ShutdownListener</listener-class>
</listener>