在 Java 中对 PDF 进行转换、打印、处理、签名和浏览

Viewer viewer = new Viewer();
viewer.setupViewer();
viewer.executeCommand(ViewerCommands.OPENFILE, "pdfFile.pdf");

ConvertPagesToImages.writeAllPagesAsImagesToDir("inputFileOrDir", "outputDir", "bmp", 1.33f);

ExtractTextAsWordList.writeAllWordlistsToDir("inputFileOrDirectory", "outputDir", -1);

ArrayList<Float[]> resultsForPages = FindTextInRectangle.findTextOnAllPages("/path/to/file.pdf", "textToFind");

PrintPdfPages print = new PrintPdfPages("C:/pdfs/mypdf.pdf");

if (print.openPDFFile()) {
    print.printAllPages("Printer Name");
}

final PdfUtilities utilities = new PdfUtilities("path/to/exampleFile.pdf");

try {
    if (utilities.openPDFFile()) {
        // Returns a String containing all metadata fields for the document
        final String documentPropertiesAsXML = utilities.getDocumentPropertyFieldsInXML();

        // Returns the total page count as an int
        final int totalPageCount = utilities.getPageCount();

        for (int i = 1; i != totalPageCount; i++) {
            // Get the page dimensions for the specified page in the given units and type
            final float[] pageDimensions = utilities.getPageDimensions(i, PdfUtilities.PageUnits.Pixels, PdfUtilities.PageSizeType.CropBox);

            // Returns the image data as a String for the specified page
            final String xImageDataForPage = utilities.getXImageDataForPage(i);
        }
    }
}
catch (final PdfException e) {
    e.printStackTrace();
}
utilities.closePDFfile();

WritableAnnotation[] annotations = new WritableAnnotation[2];
annotations[0] = new SquareAnnotation(1, 10, 10, 100, 100);
annotations[1] = new CircleAnnotation(2, 10, 10, 100, 100);
AnnotationWriter.writeAnnotations(inputFile, outputFile, annotation);

ExtractClippedImages.writeAllClippedImagesToDir("inputFileOrDirectory", "outputDir", "outputImageFormat", new String[] {"imageHeightAsFloat", "subDirectoryForHeight"});