1、Aspose组件下载
Aspose下载地址：https://products.aspose.com/words/java
破解版下载地址：https://download.csdn.net/download/ahgaoyong/9615854
官方文档地址：https://docs.aspose.com/display/wordsjava/Home
官方Demo代码：Words-for-Java" rel="nofollow">https://github.com/aspose-words/Aspose.Words-for-Java
2、将多帧图片转成pdf
/** * 获取license * * @return */ public static boolean getLicense() { boolean result = false; try { InputStream is = Test.class.getClassLoader().getResourceAsStream("\\license.xml"); License aposeLic = new License(); aposeLic.setLicense(is); result = true; } catch (Exception e) { e.printStackTrace(); } return result; }public static void convertImageToPdf(String inputFileName, String outputFileName) throws Exception{ // 验证License if (!getLicense()) { return; }// 创建 Aspose.Words.Document 和 DocumentBuilder.// 构建器使向文档添加内容变得很简单。Document doc = new Document();DocumentBuilder builder = new DocumentBuilder(doc);// 使用approriate读取器从磁盘加载图像。ImageInputStream iis = ImageIO.createImageInputStream(new File(inputFileName));ImageReader reader = ImageIO.getImageReaders(iis).next();reader.setInput(iis, false);try{// 获取图像中的帧数。int framesCount = reader.getNumImages(true);// 遍历所有帧。for (int frameIdx = 0; frameIdx < framesCount; frameIdx++){// 如果是多帧图像，则在每个新页面之前插入分段。if (frameIdx != 0) builder.insertBreak(BreakType.SECTION_BREAK_NEW_PAGE);BufferedImage image = reader.read(frameIdx);// Max page sizedouble maxPageHeight = 1584;double maxPageWidth = 1584;double currentImageHeight = ConvertUtil.pixelToPoint(image.getHeight());double currentImageWidth = ConvertUtil.pixelToPoint(image.getWidth());if (currentImageWidth >= maxPageWidth || currentImageHeight >= maxPageHeight){// Get max image size.double[] size = CalculateImageSize(image, maxPageHeight, maxPageWidth, currentImageHeight,currentImageWidth);currentImageWidth = size[0];currentImageHeight = size[1];} //我们希望页面的大小与图像的大小相同。 //将像素转换为点，将页面大小转换为实际图像大小。PageSetup ps = builder.getPageSetup();ps.setPageWidth(currentImageWidth);ps.setPageHeight(currentImageHeight);// 将图像插入到文档中，并将其定位到的左上角该页面。Shape shape = builder.insertImage(image,RelativeHorizontalPosition.PAGE,0,RelativeVerticalPosition.PAGE,0,ps.getPageWidth(),ps.getPageHeight(),WrapType.NONE);}}finally {if (iis != null) {iis.close();reader.dispose();}}// 将文档保存为PDFdoc.save(outputFileName);}public static double[] CalculateImageSize(BufferedImage img, double containerHeight, double containerWidth,double targetHeight, double targetWidth) throws Exception {// Calculate width and heighttargetHeight = containerHeight;targetWidth = containerWidth;// Get size of an imagedouble imgHeight = ConvertUtil.pixelToPoint(img.getHeight());double imgWidth = ConvertUtil.pixelToPoint(img.getWidth());if (imgHeight < targetHeight && imgWidth < targetWidth){targetHeight = imgHeight;targetWidth = imgWidth;}else{// 计算文档中图像的大小double ratioWidth = imgWidth / targetWidth;double ratioHeight = imgHeight / targetHeight;if (ratioWidth > ratioHeight)targetHeight = (targetHeight * (ratioHeight / ratioWidth));elsetargetWidth = (targetWidth * (ratioWidth / ratioHeight));}double[] size = new double[2];size[0] = targetWidth; // widthsize[1] = targetHeight; // heightreturn (size);}
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