pdfbox

问题 I extracted text from a pdf using both Apache PDFbox and iText. But both the extracted text are completely unstructured and messy This is but the extracted text is :: 111111 1111111111111111111111111111111111111111111111111111111111111 US008631488B2 (12) United States Patent (10) Patent No.: US 8,631,488 B2 Oz et al. (45) Date of Patent: Jan. 14,2014 6,813,682 B2 1112004 Bress et al. (54) SYSTEMS AND METHODS FOR PROVIDING 7,065,644 B2 Daniell et al. 6/2006 SECURITY SERVICES DURING POWER Todd

问题 I am working with some very large PDFs, some over 7GB in size. The PDFs have up to 20,000 pages and many full page color images. I'd like to use PDFBox to work with the PDFs, but due to the size I get OutOfMemoryError's when I attempt to open the PDFs. I'm working with version pdfbox-app-1.6.0, on Windows 7 using Intellij, java 6. First I tried writing a simple program that just opened the PDF in a PDDocument and coping each page over to another PDDocument: http://ideone.com/arKhB Next I

问题 I have a requirement to set overprint=true at ColorSpace level on a "PDF" (not for the entire PDF Page). I'm trying to solve this using PDFBox. Again, I want to apply overprint only for a specific colorSpace (see If condition in the sample code below), but graphicsState.setStrokingOverprintControl(true); seems to be setting overprint for the entire PDF Page (all colorSpaces). Here's the sample code. Anyone came across this problem? Am I missing something? Sample code: public static void

问题 I am using Apache PDFBox to read a fillable PDF form and fill the fields based on some data. I am using the below code (as per suggestions from other SO answers) to get the default Appearance String and changing it (as you can see below, I am changing the font size from 10 to 12 if the field name is "Field1". How do I bold the field? Any documentation on what order the /Helv 10 Tf 0 g are arranged? What I need to set to bold the field? If I understand right, there are 14 basic fonts that I

问题 I am currently using PDF Box to parse a pdf and I am trying to figure out how to retrieve data about the text such as the font (bold, size, etc) and the location of the font. Any suggestions? 回答1: After poking around the (hard to find) PDFBox docs, I found this little gem. Apparently one of the examples shows exactly how to do everything you asked. Basically, you subclass PdfTextStripper and override the processTextPosition method. There, you query the TextPosition for whatever information

问题 I have a pdf with several pages and I want to transform that to one Image. My actual code create an image by pdf's page... @Test public void testImage() throws IOException { try { PDDocument pdDocument = PDDocument.load(new File("download.pdf")); PDFRenderer pdfRenderer = new PDFRenderer(pdDocument); for (int x = 0; x < pdDocument.getNumberOfPages(); x++) { BufferedImage bImage = pdfRenderer.renderImageWithDPI(x, 300, ImageType.RGB); ImageIOUtil.writeImage(bImage, String.format(x +"__template

问题 I am using Apache PDFBox for configuration of PDTextField 's on a PDF document where I load Lato onto the document using: font = PDType0Font.load( @j_pd_document, java.io.FileInputStream.new('/path/to/Lato-Regular.ttf') ) # => Lato-Regular font_name = pd_default_resources.add(font).get_name # => F4 I then pass the font_name into a default_appearance_string for the PDTextField like so: j_text_field.set_default_appearance("/#{font_name} 0 Tf 0 g") # where font_name is # passed in from above The

问题 I am implementing functionality to allow user to draw figures in pdf. I want to draw all the figures in a single layer, which can be made visible or invisible by the user.I am able to create a new layer in a pdf. I am also able to retrieve that layer.But, I am not able to make modification to layer (PDOptionalContentGroup). I tried converting the PDOptionalContentGroup to PDPage and then making desired changes to PDPPage. I also saved the PDDocument.It only created another layer with the same

问题 I am processing some large pdf files, (up to 100MB and about 2000 pages), with pdfbox. Some of the pages contain a QR code, I want to split those files into smaller ones with the pages from one QR code to the next. I got this, but the result file sizes are the same as the source file. I mean, if I cut a 100MB pdf file into a ten files I am getting ten files 100MB each. This is the code: PDDocument documentoPdf = PDDocument.loadNonSeq(new File("myFile.pdf"), new RandomAccessFile(new File(".

问题 I have a pdf containing 2 blank images. I need to replace both the images with 2 separate images using PDFBox. The problem is, both the blank images appear to have the same resource. So, if I replace one, the other one is replaced with the same image as well. I followed this example and tried overriding the processOperator() method and replaced the images based on the imageHeight. However, it still ends up replacing both the images with the same image. This is my code thus far: protected void