appserver/tests/appserv-tests/devtests/web/servlet-3.0/servletContextAddServletAndFilterByClass/servlet/test/MyListener.java

/*
 * Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package test;

import java.io.*;
import java.util.*;
import jakarta.servlet.*;

public class MyListener implements ServletContextListener {

    /**
     * Receives notification that the web application initialization
     * process is starting.
     *
     * @param sce The servlet context event
     */
    public void contextInitialized(ServletContextEvent sce) {
        try {
            doContextInitialized(sce);
        } catch (ClassNotFoundException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * Receives notification that the servlet context is about to be shut down.
     *
     * @param sce The servlet context event
     */
    public void contextDestroyed(ServletContextEvent sce) {
        // Do nothing
    }

    private void doContextInitialized(ServletContextEvent sce)
            throws ClassNotFoundException {

        ServletContext sc = sce.getServletContext();

        /*
         * Register servlet
         */
        ServletRegistration sr = sc.addServlet("NewServlet",
            (Class <? extends Servlet>) getClass().getClassLoader().loadClass(
                "test.NewServlet"));
        sr.setInitParameter("servletInitParamName", "servletInitParamValue");
        sr.addMapping("/newServlet");

        /*
         * Register filter
         */
        FilterRegistration fr = sc.addFilter("NewFilter",
            (Class <? extends Filter>) getClass().getClassLoader().loadClass(
                "test.NewFilter"));
        fr.setInitParameter("filterInitParamName", "filterInitParamValue");
        fr.addMappingForServletNames(EnumSet.of(DispatcherType.REQUEST),
                                     true, "NewServlet");
    }
}