java">/*** 图片转pdf*/
public static void ImagesToPdf(){String folderPath = "D:\\Desktop\\xuanku";File folder = new File(folderPath);List<String> images = new ArrayList<>();// 检查文件夹是否存在if (folder.exists() && folder.isDirectory()) {// 获取文件夹下的所有文件和文件夹File[] listOfFiles = folder.listFiles();// 遍历文件和文件夹for (File file : listOfFiles) {// 如果是文件并且文件名以.jpg结尾if (file.isFile() && file.getName().endsWith(".png") || file.getName().endsWith(".PNG")) {images.add(file.getAbsolutePath());}}} else {System.out.println("文件夹不存在或不是一个目录");return;}// 使用自定义的Comparator对图片名称进行排序Collections.sort(images, new Comparator<String>() {@Overridepublic int compare(String s1, String s2) {// 提取两个字符串中的数字部分String num1 = s1.replaceAll("\\D+", "");String num2 = s2.replaceAll("\\D+", "");// 将字符串转换为整数进行比较return Integer.compare(Integer.parseInt(num1), Integer.parseInt(num2));}});//创建一个Pdf文档实例com.aspose.pdf.Document pdfDoc  = new com.aspose.pdf.Document();// 遍历图片路径for (String  imagePath: images) {//System.out.println(imagePath);try {com.aspose.pdf.Page page = pdfDoc.getPages().add();page.setPageSize(com.aspose.pdf.PageSize.getA4().getWidth(), com.aspose.pdf.PageSize.getA4().getHeight());// 创建Image对象，命名空间是必要的，因为在别的命名空间也有Image类
//                com.aspose.pdf.Image pdfImage = new com.aspose.pdf.Image();
//                pdfImage.setFile(imagePath);// 读取图片文件BufferedImage image = ImageIO.read(new File(imagePath));float imageWidth = image.getWidth();float imageHeight = image.getHeight();float scaleWidth = com.aspose.pdf.PageSize.getA4().getWidth() / imageWidth;float scaleHeight = com.aspose.pdf.PageSize.getA4().getHeight() / imageHeight;float scaleFactor = Math.min(scaleWidth, scaleHeight);// 创建一个Aspose.PDF的图片对象，并调整大小com.aspose.pdf.Image pdfImage = new com.aspose.pdf.Image();pdfImage.setFile(imagePath);pdfImage.setImageScale(scaleFactor);page.getParagraphs().add(pdfImage);} catch (Exception e) {e.printStackTrace();}}// 保存PDF文档try {pdfDoc.save("D:\\Desktop\\xuanku\\output2.pdf");System.out.println("PDF文件已保存。");} catch (Exception e) {e.printStackTrace();}
}