一、 准备模板

1.通过word生成文档
2.将word转为pdf模板
3.通过Adobe Acrobat DC （ 签名-》准备协议-》修改域设置对应字段别名）

协议书.png

二、 PDF生成主体代码

/**
     * 客户告知书PDF合成操作
     * @param signString
     * @param path
     * @param newPath
     * @param imagePath
     * @param customername
     * @param idtype
     * @param idNumer
     * @param mobile
     * @param mail
     * @param address
     * @param imageSeal
     * @return
     * @throws DocumentException
     * @throws IOException
     */
    public Map<String, Object> fillTemplate(String signString, String path, String newPath, String imagePath,String customername, String idtype, String idNumer, String mobile, String mail, String address, String imageSeal, int file_year,int file_month,int file_date) throws DocumentException, IOException {

        //返回值定义
        Map<String, Object> fileMap1 = new HashMap<>();

        // 模板路径

        String templatePath = path;

        // 生成的新文件路径
        String fileUUid1 = UUID.randomUUID().toString().replaceAll("-", "");
        if (!signString.equals("")) {
            fileUUid1 = signString + "@";
        }
        //文件
        String fileName = customername + fileUUid1 + ".pdf";
        String newPDFPath = newPath + fileName;

        PdfReader reader;
        FileOutputStream out;
        ByteArrayOutputStream bos;
        PdfStamper stamper;
        // 输出流
        out = new FileOutputStream(newPDFPath);
        // 读取pdf模板
        reader = new PdfReader(templatePath);
        bos = new ByteArrayOutputStream();
        stamper = new PdfStamper(reader, bos);
        AcroFields form = stamper.getAcroFields();
        //字体设置
        BaseFont bf = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
        Font FontChinese = new Font(bf);
        form.addSubstitutionFont(bf);
        //方法三：使用资源字体(ClassPath)
        /*BaseFont baseFont = BaseFont.createFont("/SIMYOU.TTF,1",BaseFont.IDENTITY_H,BaseFont.NOT_EMBEDDED); */
        Map<String, Object> data = new HashMap<>();
        data.put("Text1", customername);
        data.put("Text2", idtype);
        data.put("Text3", idNumer);
        data.put("Text4", mobile);
        data.put("Text5", mail);
        data.put("Text6", address);
        //时间
        data.put("year", file_year);
        data.put("month", file_month);
        data.put("day", file_date);
        // 7遍历data 给pdf表单表格赋值
        for (String key : data.keySet()) {
            form.setField(key, data.get(key).toString());
        }
        // 如果为false那么生成的PDF文件还能编辑，一定要设为true
        stamper.setFormFlattening(true);

        //合成图片-----------------------------------
        int pageNo1 = form.getFieldPositions("Sign").get(0).page;
        int pageNo2 = form.getFieldPositions("Seal").get(0).page;

        Rectangle signRect1 = form.getFieldPositions("Sign").get(0).position;
        Rectangle signRect2 = form.getFieldPositions("Seal").get(0).position;

        float x1 = signRect1.getLeft();
        float y1 = signRect1.getBottom();

        float x2 = signRect2.getLeft();
        float y2 = signRect2.getBottom();
        // 读图片
        Image image = Image.getInstance(imagePath);
        Image image1 = Image.getInstance(imageSeal);
        // 获取操作的页面
        PdfContentByte under1 = stamper.getOverContent(pageNo1);
        PdfContentByte under2 = stamper.getOverContent(pageNo2);
        // 根据域的大小缩放图片
        image.scaleToFit(signRect1.getWidth(), signRect1.getHeight());
        image1.scaleToFit(signRect2.getWidth(), signRect2.getHeight());
        // 添加图片
        image.setAbsolutePosition(x1, y1);
        image1.setAbsolutePosition(x2, y2);

        under1.addImage(image);
        under2.addImage(image1);
        //-----------------------------
        stamper.close();
        
        Document doc = new Document();
        PdfCopy copy = new PdfCopy(doc, out);
        doc.open();
        //pdf模板总页数
        int pageNum = reader.getNumberOfPages();
        for (int i = 1; i <= pageNum; i++) {
            PdfImportedPage importPage = copy.getImportedPage(new PdfReader(bos.toByteArray()), i);
            copy.addPage(importPage);
        }
        doc.close();
        //获取生成文件大小
        File file = new File(newPDFPath);
        long fileSize = file.length();
        //封装返回值
        fileMap1.put("FILENAME", fileName);
        fileMap1.put("PATH", newPDFPath);
        fileMap1.put("FILEID", fileUUid1);
        fileMap1.put("SIZE", fileSize);
        //返回值
        return fileMap1;
    }

三、入参解读

String signString = " 签名id";
String path = "pdf模板路径";
String newPath = "生成pdf存放路径";
String imageSeal = "印章图片路径";
String customername = "姓名";
String idtype = "证件类型"；
String idNumer = "证件号";
String mobile = "手机号";
String mail = "邮箱";
String address = "地址";
//生成当前日期
Calendar cal = Calendar.getInstance();
//年
int file_year = cal.get(Calendar.YEAR);
//月
int file_month = cal.get(Calendar.MONTH)+1;
//日
int file_date = cal.get(Calendar.DATE);