KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > kelp > webapp > presentation > GreetingServlet


1 /*
2  * Enhydra Java Application Server Project
3  *
4  * The contents of this file are subject to the Enhydra Public License
5  * Version 1.1 (the "License"); you may not use this file except in
6  * compliance with the License. You may obtain a copy of the License on
7  * the Enhydra web site ( http://www.enhydra.org/ ).
8  *
9  * Software distributed under the License is distributed on an "AS IS"
10  * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
11  * the License for the specific terms governing rights and limitations
12  * under the License.
13  *
14  * The Initial Developer of the Enhydra Application Server is Lutris
15  * Technologies, Inc. The Enhydra Application Server and portions created
16  * by Lutris Technologies, Inc. are Copyright Lutris Technologies, Inc.
17  * All Rights Reserved.
18  *
19  * Contributor(s):
20  *
21  */
22 package kelp.webapp.presentation;
23
24 // Xerces imports
25 import org.w3c.dom.html.HTMLElement;
26
27 // Servlet imports
28 import javax.servlet.ServletException JavaDoc;
29 import javax.servlet.ServletOutputStream JavaDoc;
30 import javax.servlet.http.HttpServlet JavaDoc;
31 import javax.servlet.http.HttpServletRequest JavaDoc;
32 import javax.servlet.http.HttpServletResponse JavaDoc;
33
34 // Standard imports
35 import java.io.IOException JavaDoc;
36
37 /**
38  * <p>
39  * This presentation object dynamically creates an HTML page
40  * showing the greeting from the application configuration file.
41  * </p>
42  */
43 public class GreetingServlet extends HttpServlet JavaDoc {
44     private final String JavaDoc GREETING = "Hello World!";
45
46     public void doGet(HttpServletRequest JavaDoc request,
47                       HttpServletResponse JavaDoc response) throws ServletException JavaDoc,
48                       IOException JavaDoc {
49         GreetingHTML page = null;
50         ServletOutputStream JavaDoc out;
51         byte[] buffer;
52
53         page = createPage();
54         buffer = page.toDocument().getBytes();
55         response.setContentType( "text/html" );
56         response.setContentLength( buffer.length );
57         out = response.getOutputStream();
58         out.write(buffer);
59         out.flush();
60         response.flushBuffer();
61     }
62
63     public GreetingHTML createPage() {
64         GreetingHTML page = null;
65         HTMLElement element = null;
66
67         page = new GreetingHTML();
68         element = page.getElementSpanGreeting();
69         element.getFirstChild().setNodeValue(GREETING);
70         return page;
71     }
72
73 }
74
Popular Tags