Java EE 6 example source code file (TestServletContextListener.java)

This example Java EE 6 source code file (TestServletContextListener.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Java EE 6 tags/keywords

dynamicfilter, dynamicservlet, dynamicservlet, filterregistration, override, override, servlet, servletcontext, servletcontext, servletcontextlistener, servletcontextlistener, servletregistration, testservletcontextlistener, util

The Java EE 6 TestServletContextListener.java source code

/*
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 * Copyright 1997-2009 Sun Microsystems, Inc. All rights reserved.
 *
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 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
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package web.servlet.dynamicregistration_war;

import java.util.*;
import javax.servlet.*;

/**
 * ServletContextListener that registers a Servlet (with
 * name <tt>DynamicServlet) and Filter (with name 
 * <tt>DynamicFilter) in response to the contextInitialized
 * event.
 *
 * <p>The DynamicServlet is configured with an initialization
 * parameter and mapped to a URL pattern equal to <tt>/*.
 *
 * <p>The DynamicFilter is also configured with an initialization
 * parameter and mapped to the <tt>DynamicServlet such that it will
 * intercept any requests mapped to the <tt>DynamicServlet.
 *
 * @author Jan Luehe
 */
public class TestServletContextListener implements ServletContextListener {

    @Override
    public void contextInitialized(ServletContextEvent sce) {

        ServletContext sc = sce.getServletContext();

        // Register Servlet
        ServletRegistration sr = sc.addServlet("DynamicServlet",
            "web.servlet.dynamicregistration_war.TestServlet");
        sr.setInitParameter("servletInitName", "servletInitValue");
        sr.addMapping("/*");

        // Register Filter
        FilterRegistration fr = sc.addFilter("DynamicFilter",
            "web.servlet.dynamicregistration_war.TestFilter");
        fr.setInitParameter("filterInitName", "filterInitValue");
        fr.addMappingForServletNames(EnumSet.of(DispatcherType.REQUEST),
                                     true, "DynamicServlet");

        // Register ServletRequestListener
        sc.addListener("web.servlet.dynamicregistration_war.TestServletRequestListener");
    }   

    @Override
    public void contextDestroyed(ServletContextEvent sce) {  
        // Do nothing
    }
}