@WebServlet("/my")

public class MyServlet extends HttpServlet {

    @Override

    protected void doGet(HttpServletRequest req, HttpServletResponse resp){

        doPost(req,resp);

    }

    @Override

    protected void doPost(HttpServletRequest req, HttpServletResponse resp){

        System.out.println("name>>>"+req.getParameter("name"));

    }

}

@WebFilter("/*")

public class MyFilter implements Filter {

    @Override

    public void init(FilterConfig filterConfig){

        System.out.println("MyFilter>>>init");

    }

    @Override

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {

        System.out.println("MyFilter>>>doFilter");

        chain.doFilter(request,response);

    }

    @Override

    public void destroy() {

        System.out.println("MyFilter>>>destroy");

    }

}

@WebListener

public class MyListener implements ServletRequestListener {

    @Override

    public void requestDestroyed(ServletRequestEvent sre) {

        System.out.println("MyListener>>>requestDestroyed");

    }

    @Override

    public void requestInitialized(ServletRequestEvent sre) {

        System.out.println("MyListener>>>requestInitialized");

    }

}