public static void contributeReportsService(MappedConfiguration<String, Resource> configuration)
{
        configuration.add(ReportsService.CONFIG_RESOURCE_KEY, new ClasspathResource("jasperreports.properties"));
}

public class BrowseOrderPage
{
        @Property
        private ShipmentOrder gridRow;

        @Component(parameters = {"event=printShipmentSticker", "context=gridRow.id"})
        private EventLink printShipmentStickerLink;

        @Inject
        private ShipmentOrderDAO shipmentOrderDAO;

        @Inject
        private ReportsService reportsService;

        @Inject
        @Path(value = "context:WEB-INF/templates/RecipientEtiketts_A4.jrxml")
        private Asset shipmentStickerForm;

        @Inject
        private Context context;

        /**
         * print the shipment sticker.
         */
        @OnEvent(value = "printShipmentSticker")
        StreamResponse printShipmentSticker(long entityId) throws IOException
        {
                ByteArrayInputStream bais;
                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                Map parameterMap = new HashMap();

                parameterMap.put("report_base_path", context.getRealFile("/").getAbsolutePath());
                JRSingleBeanDataSource dataSource = new JRSingleBeanDataSource(shipmentOrderDAO.doRetrieve(entityId, false));
                reportsService.fillAndExport(shipmentStickerForm.getResource(), ExportFormat.PDF, parameterMap, dataSource, baos);
                ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
                return new PdfStreamResponse(bais, "ShipmentSticker", baos.size());
        }
}