Bonjour;

j'ai vraiment un problème pour créer un GanttChart on utilisant jFreeChart en jsf.
j'ai essayé d'utiliser le composent de primefaces "dynamic image"(http://www.primefaces.org/showcase/ui/dynamicImage.jsf )
j'ai essayé de changer la partie qui concerne PieChart par GanttChart. voila mon code:

voila ma classe DynamicImageController.java:

Code : Sélectionner tout - Visualiser dans une fenêtre à part
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public class DynamicImageController {  
 
    private StreamedContent chart;  
    private StreamedContent image;
 
    private static final Logger logger = Logger.getLogger(DynamicImageController.class.getName());  
 
    public DynamicImageController() {  
        //Chart  
        try {  
            JFreeChart jfreechart = ChartFactory.createGanttChart(
            "Gantt Chart Demo",  // chart title
            "Task",              // domain axis label
            "Date",              // range axis label
            createDataset(),             // data
            true,                // include legend
            true,                // tooltips
            false                // urls
        ); 
            File chartFile = new File("dynamichart");  
            ChartUtilities.saveChartAsPNG(chartFile, jfreechart, 375, 300);  
            chart = new DefaultStreamedContent(new FileInputStream(chartFile), "image/png");  
        } catch (Exception e) {  
            logger.severe(e.getMessage());  
        }  
 
    }  
 
 
    public StreamedContent getImage() {  
        return image;  
    }  
    public void setImage(StreamedContent image) {  
        this.image = image;  
    }  
 
    public StreamedContent getChart() {  
        return chart;  
    }  
    public void setChart(StreamedContent chart) {  
        this.chart = chart;  
    }  
 
     private static Date date(final int day, final int month, final int year) {
 
        final Calendar calendar = Calendar.getInstance();
        calendar.set(year, month, day);
        final Date result = calendar.getTime();
        return result;
     }
 
 
    private IntervalCategoryDataset createDataset() {  
        final TaskSeries s1 = new TaskSeries("Scheduled");
        s1.add(new Task("Write Proposal",
               new SimpleTimePeriod(date(1, Calendar.APRIL, 2001),
                                    date(5, Calendar.APRIL, 2001))));
        s1.add(new Task("Obtain Approval",
               new SimpleTimePeriod(date(9, Calendar.APRIL, 2001),
                                    date(9, Calendar.APRIL, 2001))));
        s1.add(new Task("Requirements Analysis",
               new SimpleTimePeriod(date(10, Calendar.APRIL, 2001),
                                    date(5, Calendar.MAY, 2001))));
        s1.add(new Task("Design Phase",
               new SimpleTimePeriod(date(6, Calendar.MAY, 2001),
                                    date(30, Calendar.MAY, 2001))));
        s1.add(new Task("Design Signoff",
               new SimpleTimePeriod(date(2, Calendar.JUNE, 2001),
                                    date(2, Calendar.JUNE, 2001))));
        s1.add(new Task("Alpha Implementation",
               new SimpleTimePeriod(date(3, Calendar.JUNE, 2001),
                                    date(31, Calendar.JULY, 2001))));
        s1.add(new Task("Design Review",
               new SimpleTimePeriod(date(1, Calendar.AUGUST, 2001),
                                    date(8, Calendar.AUGUST, 2001))));
        s1.add(new Task("Revised Design Signoff",
               new SimpleTimePeriod(date(10, Calendar.AUGUST, 2001),
                                    date(10, Calendar.AUGUST, 2001))));
        s1.add(new Task("Beta Implementation",
               new SimpleTimePeriod(date(12, Calendar.AUGUST, 2001),
                                    date(12, Calendar.SEPTEMBER, 2001))));
        s1.add(new Task("Testing",
               new SimpleTimePeriod(date(13, Calendar.SEPTEMBER, 2001),
                                    date(31, Calendar.OCTOBER, 2001))));
        s1.add(new Task("Final Implementation",
               new SimpleTimePeriod(date(1, Calendar.NOVEMBER, 2001),
                                    date(15, Calendar.NOVEMBER, 2001))));
        s1.add(new Task("Signoff",
               new SimpleTimePeriod(date(28, Calendar.NOVEMBER, 2001),
                                    date(30, Calendar.NOVEMBER, 2001))));
 
        final TaskSeries s2 = new TaskSeries("Actual");
        s2.add(new Task("Write Proposal",
               new SimpleTimePeriod(date(1, Calendar.APRIL, 2001),
                                    date(5, Calendar.APRIL, 2001))));
        s2.add(new Task("Obtain Approval",
               new SimpleTimePeriod(date(9, Calendar.APRIL, 2001),
                                    date(9, Calendar.APRIL, 2001))));
        s2.add(new Task("Requirements Analysis",
               new SimpleTimePeriod(date(10, Calendar.APRIL, 2001),
                                    date(15, Calendar.MAY, 2001))));
        s2.add(new Task("Design Phase",
               new SimpleTimePeriod(date(15, Calendar.MAY, 2001),
                                    date(17, Calendar.JUNE, 2001))));
        s2.add(new Task("Design Signoff",
               new SimpleTimePeriod(date(30, Calendar.JUNE, 2001),
                                    date(30, Calendar.JUNE, 2001))));
        s2.add(new Task("Alpha Implementation",
               new SimpleTimePeriod(date(1, Calendar.JULY, 2001),
                                    date(12, Calendar.SEPTEMBER, 2001))));
        s2.add(new Task("Design Review",
               new SimpleTimePeriod(date(12, Calendar.SEPTEMBER, 2001),
                                    date(22, Calendar.SEPTEMBER, 2001))));
        s2.add(new Task("Revised Design Signoff",
               new SimpleTimePeriod(date(25, Calendar.SEPTEMBER, 2001),
                                    date(27, Calendar.SEPTEMBER, 2001))));
        s2.add(new Task("Beta Implementation",
               new SimpleTimePeriod(date(27, Calendar.SEPTEMBER, 2001),
                                    date(30, Calendar.OCTOBER, 2001))));
        s2.add(new Task("Testing",
               new SimpleTimePeriod(date(31, Calendar.OCTOBER, 2001),
                                    date(17, Calendar.NOVEMBER, 2001))));
        s2.add(new Task("Final Implementation",
               new SimpleTimePeriod(date(18, Calendar.NOVEMBER, 2001),
                                    date(5, Calendar.DECEMBER, 2001))));
        s2.add(new Task("Signoff",
               new SimpleTimePeriod(date(10, Calendar.DECEMBER, 2001),
                                    date(11, Calendar.DECEMBER, 2001))));
 
        final TaskSeriesCollection collection = new TaskSeriesCollection();
        collection.add(s1);
        collection.add(s2);
 
        return collection;
    }  
}
et ce qui concerne ma page jsf, voila le code:

Code : Sélectionner tout - Visualiser dans une fenêtre à part
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<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:p="http://primefaces.prime.com.tr/ui"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      xmlns:ui="http://java.sun.com/jsf/facelets"
      xmlns:c="http://java.sun.com/jsp/jstl/core">
 
    <h:head>
        <title>Facelet Title</title>
    </h:head>
 
    <h:body>
 
        <h3>JFreeChart on-the-fly</h3>  
<p:graphicImage value="#{dynamicImageController.chart}" />  
 
<h3>Barcode on-the-fly</h3>  
<p:graphicImage value="#{dynamicImageController.barcode}" /> 
 
    </h:body>
 
</html>
merci d'avance!!!