WordServlet


1   /* Copyright 2004 Sun Microsystems, Inc.  All rights reserved.  You may not modify, use, reproduce, or distribute this software except in compliance with the terms of the License at: 
2    http://adventurebuilder.dev.java.net/LICENSE.txt
3    $Id: WordServlet.java,v 1.2 2005/04/20 21:01:54 gmurray71 Exp $ */
4   
5   package com.sun.j2ee.blueprints.clientstate;
6   
7   
8   import java.io.*;
9   import java.util.*;
10  
11  // Apache Commons- Tag-Lib Imports
12  import org.apache.commons.codec.base64.Base64;
13  
14  // J2EE imports 
15  import javax.servlet.*;
16  import javax.servlet.http.*;
17  
18  import com.sun.j2ee.blueprints.clientstate.deserialize.*;
19  
20  /**
21   * This Servlet will modify the contents of the SampleBean.
22   *
23  */
24  public class WordServlet extends HttpServlet {
25  
26      private ServletContext context = null;
27      
28      public void init(ServletConfig config) throws ServletException {
29          this.context = config.getServletContext();
30      }
31      
32      public void doPost(HttpServletRequest request,
33                              HttpServletResponse response) 
34                                 throws IOException, ServletException {
35          // deserialize any state that might be in the page
36          ClientStateDeserializer.deserialize(request,response);
37          SampleBean bean = (SampleBean)request.getAttribute("sampleBean");
38          if (bean == null) {
39              System.out.println("WordServlet: Creating a new SampleBean");
40              bean = new SampleBean();
41              request.setAttribute("sampleBean", bean);
42          }
43          String   newWord = request.getParameter("newWord");
44          if (!newWord.trim().equals("")) {
45                  bean.addWord(newWord);
46          }
47          // remove words that are checked
48          Map params = (Map)request.getParameterMap();
49          Iterator it = params.keySet().iterator();
50          while (it.hasNext()) {
51              String   key = (String  )it.next();
52              if (key.startsWith("word_")) {
53                  String  [] values = (String  [])params.get(key);
54                  String   valueString = values[0];
55                  bean.removeWord(valueString);
56              }
57          }
58          context.getRequestDispatcher("/index.jsp").forward(request, response);
59      }
60  }
61  
62
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