Barcode4j条形码128生成的图像太长

Question

我使用barccode4j生成条形码图像并在jasper报告中打印。当pring 13数字包含字符或在得分符号下时，生成的图像宽度太长。这是我的代码

            final int dpi = 203;

        ByteArrayOutputStream   byteArrayOutputStream = new ByteArrayOutputStream();

         BitmapCanvasProvider   bitmapCanvasProvider = new BitmapCanvasProvider(
            byteArrayOutputStream,
            "image/x-png",
            dpi,
            BufferedImage.TYPE_BYTE_BINARY,
            true,
            0
        );

        Code128Bean bean = new Code128Bean();

        bean.setModuleWidth(UnitConv.in2mm(2.8f / dpi));
        bean.doQuietZone(false);

        bean.setMsgPosition(HumanReadablePlacement.HRP_NONE);

        bean.generateBarcode(bitmapCanvasProvider, barcodeNumber);

        bitmapCanvasProvider.finish();

        reportModel.setBarcodeStream(new ByteArrayInputStream(byteArrayOutputStream.toByteArray()));