Vaadin print report (Embedded)

public static void printReport(final String filename, long p1) {
    String path = "/com/myapp/reports/";
    final String reportFile = path + filename;
    final HashMap parameters = new HashMap();
    parameters.put("id", p1);

    try {
        StreamResource.StreamSource source = new StreamResource.StreamSource() {

            public InputStream getStream() {
                byte[] b = null;
                Connection conn = null;
                try {
                    InputStream report = getClass().getClassLoader().getResourceAsStream(reportFile);
                    if (report == null) {
                        Notification.show("No report!", Type.ERROR_MESSAGE);
                        return null;
                    }
                    conn = getDbHelp().getJDBCConnectionPool().reserveConnection();
                    b = JasperRunManager.runReportToPdf(report, parameters, conn);
                    conn.commit();
                } catch (Exception e) {
                    e.printStackTrace();
                } finally {
                    getDbHelp().getJDBCConnectionPool().releaseConnection(conn);
                }

                return new ByteArrayInputStream(b);
            }
        };

        StreamResource resource = new StreamResource(source, "report.pdf");
        resource.getStream().setParameter("Content-Disposition", "attachment;filename=\"report.pdf\"");
        resource.setMIMEType("application/pdf");
        resource.setCacheTime(0);

        Window w = new Window();
        w.setModal(true);
        w.setCloseShortcut(KeyCode.ESCAPE, null);
        w.setResizable(false);
        //w.setClosable(false);
        w.setHeight(90.0f, Unit.PERCENTAGE);
        w.setWidth(90.0f, Unit.PERCENTAGE);

        Embedded e = new Embedded("Print", resource);
        e.setMimeType("application/pdf");
        e.setType(Embedded.TYPE_OBJECT);
        e.setSizeFull();

        VerticalLayout layout = new VerticalLayout();
        layout.setSizeFull();
        layout.addComponent(e);

        w.setContent(layout);
        UI.getCurrent().addWindow(w);
        w.focus();
    } catch (Exception e) {
        e.printStackTrace();
    }
}