pdfbox 生成pdf 带图片，文字

PDDocument document = new PDDocument();
        PDPage page = new PDPage();
        document.addPage(page);

        Object o = datas.get(0);
        String objName = o.getClass().getSimpleName();
        DateFormat dateFormat = new SimpleDateFormat("yyyyMMddHHmmss");
        String csvFilePath = objName + dateFormat.format(new Date()) + ".pdf";
        // 读取字符编码
        String utf = "UTF-8";
        // 设置响应
        response.reset();
        response.setContentType("application/octet-stream");
        response.setCharacterEncoding(utf);
        response.setHeader("Content-Disposition", "attachment; filename=" + URLEncoder.encode(csvFilePath, utf));
        OutputStream outputStream = response.getOutputStream();
        PDPageContentStream contents = new PDPageContentStream(document, page);
        PDFont font = PDType1Font.HELVETICA_BOLD;
        // 添加图片
        File imagePath = new File(filePath);
        if (!imagePath.exists()) {
            imagePath.mkdirs();
        }
        if (base64 != null) {
            String picImage = decodeBase64(base64, imagePath);
            PDImageXObject pdImage = PDImageXObject.createFromFile(picImage,document);
            //Drawing the image in the PDF document
            contents.drawImage(pdImage, 10, 280);
            // delete image
            if (picImage != null) {
                File picFile = new File(picImage);
                picFile.delete();
            }
        }
        contents.beginText();
        contents.setFont(font, 14);
        contents.newLineAtOffset(10, 200);
        contents.showText("Hello World");
//    contentStream.drawString("中文");
        contents.endText();
        contents.close();
        document.save(outputStream);
        document.close();
        outputStream.flush();
        outputStream.close();