pdfbox

问题 The code below extracts Hebrew text from http://www.language-brain.com/journal/docs/Gvion_Friedmann_LanguageBrain7_frigvi.pdf without the Hebrew character "ן". All other text seems to be extracted fine. Any ideas? public class TestPDFUtil { @Test public void testHebrewPDF() throws Exception { String url = "http://www.language-brain.com/journal/docs/Gvion_Friedmann_LanguageBrain7_frigvi.pdf"; String text = PDFUtil.readPDF(url); System.out.println(text); Assert.assertTrue(text.indexOf("זיכרון

问题 I want to get image icon from button in pdf using java netbeans, and put it in some panel. However i hit a brick here. I'm using PDFBox as my PDF exporter, and i can't seem to understand enough. I already succeed reading from the form field, but there is no button extractor as long as i try to find it in PDFBox. How should i made it ? And is it possible using this method, or is there any other way around. Thanks in advance. Edit : I already found to extractimages using the one that are in

问题 I gone through different solutions on CTM matrix calculations(someof them are this and this). What I know about content stream is when " q " encounters we need to push identity matrix in a graphics_stack and keep multiply with next position operator(cm , Tm, Td, TD) CTM. When " Q " encounters we need to pop the last matrix. For text positioning parsing when " BT " encounters push in identity matrix in position_stack and keep multiply with next position operator(cm , Tm, Td, TD) CTM. When " ET

问题 Need to replace the text in the pdf with different language. In the first step, I was trying to search and replace a text in the pdf file using itextpdf ad pdfbox API. Use the below code snippet which uses itextpdf api to search and replace the text "Hello" to "Hi" from the source PDF file. The new PDF is created without any text replacements. public void manipulatePdf(String src, String dest) throws Exception { PdfDocument pdfDoc = new PdfDocument(new PdfReader(SRC), new PdfWriter(DEST));

问题 I created code that adds an image to an existing pdf document and then signs it, all using PDFBox (see code below). The code nicely adds the image and the signature. However, in some documents, Acrobat Reader complains that "The signature byte range is invalid." The problem seems to be the same as the problem described in this question. The answer to that question describes the problem in more detail: the problem is that my code leaves a mix of cross reference types in the document (streams

问题 How to determine whether a PDF page contains text or is purely picture, using Java? I searched through many forums and websites, but I can not find an answer yet . Is it possible to extract text from PDF, to know if the page is in the format picture or text? PdfReader reader = new PdfReader(INPUTFILE); PrintWriter out = new PrintWriter(new FileOutputStream(OUTPUTFILE)); for (int i = 1; i <= reader.getNumberOfPages(); i++) { // here I want to test the structure of the page !!!! if it's

问题 I can insert simple text like this: document = new PDDocument(); page = new PDPage(PDPage.PAGE_SIZE_A4); document.addPage(page); PDPageContentStream content = new PDPageContentStream(document, page); content.beginText(); content.moveTextPositionByAmount (10 , 10); content.drawString ("test text"); content.endText(); content.close(); but how can I create a paragraph similar to HTML using the width attribute? <p style="width:200px;">test text</p> 回答1: Warning : this answer applies to and old

问题 I subclassed PDFStreamEngine and overloaded processTextPosition , I am now able to reconstruct the text like PDFTextStripper but I don't want to process transparent text, which is often garbage. How can I know if some text is transparent ? 回答1: As turned out the transparent text actually was not transparent at all but instead merely covered by an image: In 201103 Key Smoking Statistic for SA 2010 FINAL.pdf the text "Key Smoking Statistics for SA --- 2004" has been covered by an image showing

问题 I subclassed PDFStreamEngine and overloaded processTextPosition , I am now able to reconstruct the text like PDFTextStripper but I don't want to process transparent text, which is often garbage. How can I know if some text is transparent ? 回答1: As turned out the transparent text actually was not transparent at all but instead merely covered by an image: In 201103 Key Smoking Statistic for SA 2010 FINAL.pdf the text "Key Smoking Statistics for SA --- 2004" has been covered by an image showing

问题 I'm trying to read PDF and show the content on Android using PDFbox. I can only read PDF and show it in Android webview. Can anybody tell me how to show the PDF in another way? Or maybe PDFBox is not compatible with Android? 回答1: PDFBox (lastest release, 1.5) is not compatible with Android. -- update -- Correct, like @Gili said, because of AWT dependencies. Android has no AWT nor Swing related classes in its Runtime. 回答2: I recently did a port of PDFBox to Android. This is only for text