pdf转图片并且按照页数输出对应页数图片

	 
@GetMapping("/pdf2png")
public static void pdf2png(String fileAddress,String filename,int indexOfStart,int indexOfEnd,String type,HttpServletResponse resp) {
    // 将pdf装图片 并且自定义图片得格式大小
    File file = new File(fileAddress);

    try {
        PDdocument doc = PDdocument.load(file);
        PDFRenderer renderer = new PDFRenderer(doc);
        int pageCount = doc.getNumberOfPages();
        for (int i = indexOfStart; i < indexOfEnd; i++) {
            BufferedImage image = renderer.renderImageWithDPI(i, 144); // Windows native DPI
            // BufferedImage srcImage = resize(image, 240, 240);//产生缩略图
            String pdth="D:\woke\_"+(i+1)+"."+type;
            ImageIO.write(image, type, new File(pdth));
            File filept = new File(pdth);
            String codedFileName = new String(filept.getName().getBytes("UTF-8"), "iso-8859-1");
            resp.setHeader("Content-Disposition", "inline;filename=" +codedFileName);
            // 响应类型,编码
            resp.setContentType("image/jpg");

            // 设置响应内容的长度
            resp.setContentLength((int) filept.length());
            // 输出
            IOUtils.copy(new FileInputStream(filept), resp.getOutputStream());

            java.io.File files = new java.io.File(pdth);
            files.delete();
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
}