ajax基础教程源码第四章

package ajaxbook.chap4; import java.io.*; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import javax.servlet.*; import javax.servlet.http.*; public class RefreshModelListServlet extends HttpServlet { private static List availableModels = new ArrayList(); protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=UTF-8"); int modelYear = Integer.parseInt(request.getParameter("modelYear")); String make = request.getParameter("make"); StringBuffer results = new StringBuffer("<models>"); MakeModelYear availableModel = null; for(Iterator it = availableModels.iterator(); it.hasNext();) { availableModel = (MakeModelYear)it.next(); if(availableModel.modelYear == modelYear) { if(availableModel.make.equals(make)) { results.append("<model>"); results.append(availableModel.model); results.append("</model>"); } } } results.append("</models>"); response.setContentType("text/xml"); response.getWriter().write(results.toString()); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } public void init() throws ServletException { availableModels.add(new MakeModelYear(2006, "Dodge", "Charger")); availableModels.add(new MakeModelYear(2006, "Dodge", "Magnum")); availableModels.add(new MakeModelYear(2006, "Dodge", "Ram")); availableModels.add(new MakeModelYear(2006, "Dodge", "Viper")); availableModels.add(new MakeModelYear(1995, "Dodge", "Avenger")); availableModels.add(new MakeModelYear(1995, "Dodge", "Intrepid")); availableModels.add(new MakeModelYear(1995, "Dodge", "Neon")); availableModels.add(new MakeModelYear(1995, "Dodge", "Spirit")); availableModels.add(new MakeModelYear(1985, "Dodge", "Aries")); availableModels.add(new MakeModelYear(1985, "Dodge", "Daytona")); availableModels.add(new MakeModelYear(1985, "Dodge", "Diplomat")); availableModels.add(new MakeModelYear(1985, "Dodge", "Omni")); availableModels.add(new MakeModelYear(1970, "Dodge", "Challenger")); availableModels.add(new MakeModelYear(1970, "Dodge", "Charger")); availableModels.add(new MakeModelYear(1970, "Dodge", "Coronet")); availableModels.add(new MakeModelYear(1970, "Dodge", "Dart")); availableModels.add(new MakeModelYear(2006, "Chevrolet", "Colorado")); availableModels.add(new MakeModelYear(2006, "Chevrolet", "Corvette")); availableModels.add(new MakeModelYear(2006, "Chevrolet", "Equinox")); availableModels.add(new MakeModelYear(2006, "Chevrolet", "Monte Carlo")); availableModels.add(new MakeModelYear(1995, "Chevrolet", "Beretta")); availableModels.add(new MakeModelYear(1995, "Chevrolet", "Camaro")); availableModels.add(new MakeModelYear(1995, "Chevrolet", "Cavalier")); availableModels.add(new MakeModelYear(1995, "Chevrolet", "Lumina")); availableModels.add(new MakeModelYear(1985, "Chevrolet", "Cavalier")); availableModels.add(new MakeModelYear(1985, "Chevrolet", "Chevette")); availableModels.add(new MakeModelYear(1985, "Chevrolet", "Celebrity")); availableModels.add(new MakeModelYear(1985, "Chevrolet", "Citation II")); availableModels.add(new MakeModelYear(1970, "Chevrolet", "Bel Air")); availableModels.add(new MakeModelYear(1970, "Chevrolet", "Caprice")); availableModels.add(new MakeModelYear(1970, "Chevrolet", "Chevelle")); availableModels.add(new MakeModelYear(1970, "Chevrolet", "Monte Carlo")); availableModels.add(new MakeModelYear(2006, "Pontiac", "G6")); availableModels.add(new MakeModelYear(2006, "Pontiac", "Grand Prix")); availableModels.add(new MakeModelYear(2006, "Pontiac", "Solstice")); availableModels.add(new MakeModelYear(2006, "Pontiac", "Vibe")); availableModels.add(new MakeModelYear(1995, "Pontiac", "Bonneville")); availableModels.add(new MakeModelYear(1995, "Pontiac", "Grand Am")); availableModels.add(new MakeModelYear(1995, "Pontiac", "Grand Prix")); availableModels.add(new MakeModelYear(1995, "Pontiac", "Firebird")); availableModels.add(new MakeModelYear(1985, "Pontiac", "6000")); availableModels.add(new MakeModelYear(1985, "Pontiac", "Fiero")); availableModels.add(new MakeModelYear(1985, "Pontiac", "Grand Prix")); availableModels.add(new MakeModelYear(1985, "Pontiac", "Parisienne")); availableModels.add(new MakeModelYear(1970, "Pontiac", "Catalina")); availableModels.add(new MakeModelYear(1970, "Pontiac", "GTO")); availableModels.add(new MakeModelYear(1970, "Pontiac", "LeMans")); availableModels.add(new MakeModelYear(1970, "Pontiac", "Tempest")); } private static class MakeModelYear { private int modelYear; private String make; private String model; public MakeModelYear(int modelYear, String make, String model) { this.modelYear = modelYear; this.make = make; this.model = model; } } }