KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > servlets > ImageServlet


1 /*
2  * ============================================================================
3  * GNU Lesser General Public License
4  * ============================================================================
5  *
6  * JasperReports - Free Java report-generating library.
7  * Copyright (C) 2001-2005 JasperSoft Corporation http://www.jaspersoft.com
8  *
9  * This library is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with this library; if not, write to the Free Software
21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
22  *
23  * JasperSoft Corporation
24  * 185, Berry Street, Suite 6200
25  * San Francisco CA 94107
26  * http://www.jaspersoft.com
27  */
28 package servlets;
29
30 import java.io.*;
31 import java.util.*;
32 import javax.servlet.*;
33 import javax.servlet.http.*;
34
35
36 /**
37  * @author Teodor Danciu (teodord@users.sourceforge.net)
38  * @version $Id: ImageServlet.java,v 1.6 2005/06/27 07:14:40 teodord Exp $
39  */
40 public class ImageServlet extends HttpServlet
41 {
42
43
44     /**
45      *
46      */
47     public void service(
48         HttpServletRequest request,
49         HttpServletResponse response
50         ) throws IOException, ServletException
51     {
52         Map imagesMap = (Map)request.getSession().getAttribute("IMAGES_MAP");
53     
54         if (imagesMap != null)
55         {
56             String imageName = request.getParameter("image");
57             if (imageName != null)
58             {
59                 byte[] imageData = (byte[])imagesMap.get(imageName);
60     
61                 response.setContentLength(imageData.length);
62                 ServletOutputStream ouputStream = response.getOutputStream();
63                 ouputStream.write(imageData, 0, imageData.length);
64                 ouputStream.flush();
65                 ouputStream.close();
66             }
67         }
68     }
69
70
71 }
72
Popular Tags