Apache PDFBox将pdf转换为图像有人可以举例说明如何使用Apache PDFBox在不同的图像中转换pdf(pdf的每一页都有一个)。提前致谢
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牛魔王的故事
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1.8。*版本的解决方案:
PDDocument document = PDDocument.loadNonSeq(new File(pdfFilename), null);List<PDPage> pdPages = document.getDocumentCatalog().getAllPages();int page = 0;for (PDPage pdPage : pdPages){ ++page; BufferedImage bim = pdPage.convertToImage(BufferedImage.TYPE_INT_RGB, 300); ImageIOUtil.writeImage(bim, pdfFilename + "-" + page + ".png", 300);}document.close();
在构建之前,不要忘记阅读1.8依赖项页面。
2.0版本的解决方案:
PDDocument document = PDDocument.load(new File(pdfFilename));PDFRenderer pdfRenderer = new PDFRenderer(document);for (int page = 0; page < document.getNumberOfPages(); ++page){ BufferedImage bim = pdfRenderer.renderImageWithDPI(page, 300, ImageType.RGB); // suffix in filename will be used as the file format ImageIOUtil.writeImage(bim, pdfFilename + "-" + (page+1) + ".png", 300);}document.close();
ImageIOUtil类位于单独的下载/工件(pdf-tools)中。在进行构建之前,请阅读2.0依赖关系页面,您将需要额外的带有jbig2图像的PDF文件,用于保存到tiff图像以及读取加密文件。
确保使用您正在使用的任何JDK版本的最新版本,即如果您使用的是jdk8,则不要使用版本1.8.0_5,请使用1.8.0_191或您阅读时的最新版本。早期版本非常慢。
胡子哥哥
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public class PDFtoJPGConverter { public List<File> convertPdfToImage(File file, String destination) throws Exception { File destinationFile = new File(destination); if (!destinationFile.exists()) { destinationFile.mkdir(); System.out.println("DESTINATION FOLDER CREATED -> " + destinationFile.getAbsolutePath()); }else if(destinationFile.exists()){ System.out.println("DESTINATION FOLDER ALLREADY CREATED!!!"); }else{ System.out.println("DESTINATION FOLDER NOT CREATED!!!"); } if (file.exists()) { PDDocument doc = PDDocument.load(file); PDFRenderer renderer = new PDFRenderer(doc); List<File> fileList = new ArrayList<File>(); String fileName = file.getName().replace(".pdf", ""); System.out.println("CONVERTER START....."); for (int i = 0; i < doc.getNumberOfPages(); i++) { // default image files path: original file path // if necessary, file.getParent() + "/" => another path File fileTemp = new File(destination + fileName + "_" + i + ".jpg"); // jpg or png BufferedImage image = renderer.renderImageWithDPI(i, 200); // 200 is sample dots per inch. // if necessary, change 200 into another integer. ImageIO.write(image, "JPEG", fileTemp); // JPEG or PNG fileList.add(fileTemp); } doc.close(); System.out.println("CONVERTER STOPTED....."); System.out.println("IMAGE SAVED AT -> " + destinationFile.getAbsolutePath()); return fileList; } else { System.err.println(file.getName() + " FILE DOES NOT EXIST"); } return null; } public static void main(String[] args) { try { PDFtoJPGConverter converter = new PDFtoJPGConverter(); Scanner sc = new Scanner(System.in); System.out.print("Enter your destination folder where save image \n"); // Destination = D:/PPL/; String destination = sc.nextLine(); System.out.print("Enter your selected pdf files name with source folder \n"); String sourcePathWithFileName = sc.nextLine(); // Source Path = D:/PDF/ant.pdf,D:/PDF/abc.pdf,D:/PDF/xyz.pdf if (sourcePathWithFileName != null || sourcePathWithFileName != "") { String[] files = sourcePathWithFileName.split(","); for (String file : files) { File pdf = new File(file); System.out.print("FILE:>> "+ pdf); converter.convertPdfToImage(pdf, destination); } } } catch (Exception ex) { ex.printStackTrace(); } }}
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在这里,我使用Apache pdfbox-2.0.8,commons-logging-1.2和fontbox-2.0.8 Library
快乐编码:)
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