String folder = System.getProperty("conf");

        // Variables pour BIRT Engine
        String reportName = "/Rapports/" + nomRapport + ".rptdesign";

        IReportEngine engine = null;
        IReportRunnable design = null;
        IRunAndRenderTask task = null;
        HTMLRenderOption renderContext = null;
        HashMap contextMap = null;
        HTMLRenderOption options = null;
        final EngineConfig conf = new EngineConfig();
        conf.setEngineHome(this.getClass().getResource("").toString());

        conf.setLogConfig(null, Level.FINE);

        try {
            Platform.startup(conf);
        } catch (BirtException e1) {
            e1.printStackTrace();
        }

        IReportEngineFactory factory = (IReportEngineFactory) Platform
                .createFactoryObject(IReportEngineFactory.EXTENSION_REPORT_ENGINE_FACTORY);

        engine = factory.createReportEngine(conf);

        try {
            design = engine.openReportDesign(folder + reportName); // Dossier du
            // rptdesign
        } catch (Exception e) {
            System.err.println("Une erreur est survenue pendant l'ouverture du fichier .rptdesign!");
            e.printStackTrace();
        }

        task = engine.createRunAndRenderTask(design);
        renderContext = new HTMLRenderOption();
        renderContext.setImageDirectory("images");
        contextMap = new HashMap();
        contextMap.put(EngineConstants.APPCONTEXT_HTML_RENDER_CONTEXT, renderContext);
        task.setAppContext(contextMap);

        // On affecte les paramètres
        task.setParameterValues(this.params);
        task.getParameterValues().get("DateDebut");
        task.validateParameters();

        options = new HTMLRenderOption();
        options.setOutputFileName(folder + "/" + nomRapport + ".html"); // Dossier
        // de sortie du html
        options.setOutputFormat("html");
        options.setEmbeddable(true);
        task.setRenderOption(options);
        try {
            task.run();
        } catch (Exception e) {
            System.err.println("Une erreur est survenue pendant la generation du rapport !");
            e.printStackTrace();
        }

        try {
            engine.destroy();
            design = null;
            task = null;
            renderContext = null;
            options = null;
            factory = null;
        } catch (Exception ex) {
            engine.destroy();
        }