01: /***********************************************************************************************
02: * File Info: $Id: ChartServlet.java,v 1.1 2003/08/28 01:17:36 nathaniel_auvil Exp $
03: * Copyright (C) 2002
04: * Author: Nathaniel G. Auvil
05: * Contributor(s):
06: *
07: * Copyright 2002 (C) Nathaniel G. Auvil. All Rights Reserved.
08: *
09: * Redistribution and use of this software and associated documentation ("Software"), with or
10: * without modification, are permitted provided that the following conditions are met:
11: *
12: * 1. Redistributions of source code must retain copyright statements and notices.
13: * Redistributions must also contain a copy of this document.
14: *
15: * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
16: * conditions and the following disclaimer in the documentation and/or other materials
17: * provided with the distribution.
18: *
19: * 3. The name "jCharts" or "Nathaniel G. Auvil" must not be used to endorse or promote
20: * products derived from this Software without prior written permission of Nathaniel G.
21: * Auvil. For written permission, please contact nathaniel_auvil@users.sourceforge.net
22: *
23: * 4. Products derived from this Software may not be called "jCharts" nor may "jCharts" appear
24: * in their names without prior written permission of Nathaniel G. Auvil. jCharts is a
25: * registered trademark of Nathaniel G. Auvil.
26: *
27: * 5. Due credit should be given to the jCharts Project (http://jcharts.sourceforge.net/).
28: *
29: * THIS SOFTWARE IS PROVIDED BY Nathaniel G. Auvil AND CONTRIBUTORS ``AS IS'' AND ANY
30: * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
31: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
32: * jCharts OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
33: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
34: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,STRICT LIABILITY, OR TORT
36: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
37: * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
38: ************************************************************************************************/package org.krysalis.jcharts.demo.simpleservlet;
39:
40: import org.krysalis.jcharts.Chart;
41: import org.krysalis.jcharts.chartData.ChartDataException;
42: import org.krysalis.jcharts.encoders.ServletEncoderHelper;
43: import org.krysalis.jcharts.properties.PropertyException;
44:
45: import javax.servlet.ServletException;
46: import javax.servlet.http.HttpServlet;
47: import javax.servlet.http.HttpServletRequest;
48: import javax.servlet.http.HttpServletResponse;
49: import java.io.IOException;
50:
51: public class ChartServlet extends HttpServlet {
52: public static final String CHART = "CHART";
53: public static final String IMAGE_MAP = "IMAGE_MAP";
54:
55: /**********************************************************************************************
56: *
57: **********************************************************************************************/
58: public void service(HttpServletRequest httpServletRequest,
59: HttpServletResponse httpServletResponse)
60: throws ServletException, IOException {
61: Chart chart = (Chart) httpServletRequest.getSession()
62: .getAttribute(CHART);
63:
64: try {
65: //---call encode just like you would normally
66: ServletEncoderHelper.encodeJPEG13(chart, 1.0f,
67: httpServletResponse);
68: } catch (PropertyException propertyException) {
69: propertyException.printStackTrace();
70: } catch (ChartDataException dataException) {
71: dataException.printStackTrace();
72: }
73:
74: httpServletRequest.getSession().removeAttribute(CHART);
75: }
76:
77: }
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