Add obsolete flag to pdf

效果

@Test
    public void test07() {
    
        //创建PdfDocument对象,加载PDF测试文档
        PdfDocument doc = new PdfDocument();
        doc.loadFromFile("D:\\InstallSoftWare\\IntelliJ2021.3.2\\ideaWorkSpace\\fangshui\\cloud\\src\\main\\webapp\\WEB-INF\\template\\152359527692647693729022820965.pdf");
// 本地给pdf添加电子印章,And get rid of the red font in the upper left corner of the first page 开始 
        PdfPageBase page = doc.getPages().add();
        doc.getPages().remove(page);
        page = doc.getPages().get(0);
// 本地给pdf添加电子印章,And get rid of the red font in the upper left corner of the first page 结束
        PdfTextBoxField textBox;
        try {
    
            textBox = new PdfTextBoxField(page, "remove");//创建文本框对象
            doc.getForm().getFields().add(textBox);//添加文本框到PDF域的集合
        } catch (Exception e) {
    
            e.printStackTrace();
        }
        //加载印章图片
        PdfImage image = PdfImage.fromFile("D:\\InstallSoftWare\\IntelliJ2021.3.2\\ideaWorkSpace\\fangshui\\cloud\\src\\main\\webapp\\WEB-INF\\template\\logo.png");
        //获取印章图片的宽度和高度
        int width = image.getWidth();
        int height = image.getHeight();
        //创建PdfTemplate对象
        PdfTemplate template = new PdfTemplate(width, height);
        //将图片绘制到模板
        template.getGraphics().drawImage(image, 0, 0, width, height);
        //创建PdfRubebrStampAnnotation对象,指定大小和位置
        Rectangle2D rect = new Rectangle2D.Float((float) (page.getActualSize().getWidth() - width - 170), (float) (page.getActualSize().getHeight() - height - 410), width, height);
        PdfRubberStampAnnotation stamp = new PdfRubberStampAnnotation(rect);
        //创建PdfAppearance对象
        PdfAppearance pdfAppearance = new PdfAppearance(stamp);
        //将模板应用为PdfAppearance的一般状态
        pdfAppearance.setNormal(template);
        //将PdfAppearance 应用为图章的样式
        stamp.setAppearance(pdfAppearance);
        //添加图章到PDF
        page.getAnnotationsWidget().add(stamp);
        //保存文档
        doc.saveToFile("save destination path", FileFormat.PDF);

        Map<String, Object> rootMap = new HashMap<>();
        rootMap.put("zhibao", "zhibao-" + DateUtil.format(DateUtil.currentDate(), "yyyy-MM-dd"));
        List<Object> list = ItextPdfUtil.fillData(rootMap, dir + "",
                dir + "LISHU.TTF");

        System.out.println("https://pub.fsgo365.cn/" + list.get(0).toString());
    }