不会吧不会吧，还有开发不会Java填充PDF模板数据的，赶紧看看吧

<dependency>
            <groupId>com.itextpdf</groupId>
            <artifactId>itextpdf</artifactId>
            <version>5.5.10</version>
        </dependency>
        <dependency>
            <groupId>com.itextpdf</groupId>
            <artifactId>itext-asian</artifactId>
            <version>5.2.0</version>
        </dependency>

        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
        </dependency>

private ByteArrayOutputStream getYearData() {
        ClassPathResource classPathResource = new ClassPathResource("template/pdf-template.pdf");
        PdfReader reader;
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        try {
            reader = new PdfReader(classPathResource.getStream());
            bos = new ByteArrayOutputStream();
            PdfStamper stamper = new PdfStamper(reader, bos);
            AcroFields form = stamper.getAcroFields();
            Map<String, String> map = new HashMap<>();
            map.put("changeTag1", ReportConstant.CHOOSE_FLAG);
            map.put("changeTag2", ReportConstant.CHOOSE_FLAG);
            map.put("passport0", "88484695274732");
            map.put("passport1", "88484695274733");
            map.put("signDate0", DateUtil.format(new Date(), ReportConstant.DATE_FORMAT_YMS));
            map.put("signDate1", DateUtil.format(new Date(), ReportConstant.DATE_FORMAT_YMS));
            map.put("validDate0", DateUtil.format(new Date(), ReportConstant.DATE_FORMAT_YM));
            map.put("validDate1", DateUtil.format(new Date(), ReportConstant.DATE_FORMAT_YM));
            map.put("orgName0", "贤一坊科技有限公司");
            map.put("orgName1", "贤一坊科技有限公司");
            map.put("remark0", "这是一个备注，里面的内容并不是无限长");
            map.put("remark1", "这是一个备注，里面的内容并不是无限长");

            this.fillPdfCellForm(map, form);

            // true代表生成的PDF文件不可编辑
            stamper.setFormFlattening(true);
            stamper.close();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (DocumentException e) {
            e.printStackTrace();
        }

        return bos;
    }

    private void fillPdfCellForm(Map<String, String> map, AcroFields form) throws IOException, DocumentException {
        for (Map.Entry entry : map.entrySet()) {
            String key = (String) entry.getKey();
            String value = (String) entry.getValue();
            form.setField(key, value);
        }
    }