Reading an encrypted pdf is almost similar as reading a plain, non-encypted PDF. We pass the key as the current element taken from the Set. We get the content of the attached file in the .PRStream object using the PdfReader#getPdfObject method. once for each file in the attachment Set. This method gets a object from the array and creates a new file with the same name as the attached file. From the document catalog, we extract the array of attached documents and pass-on the pdfreader and attached document array to the extractFiles method.

Then we extract the catalog of the document via the reader in the .PdfDictionary object. We start of extraction by creating the reading the PDF in the PdfReader class. OutputStream.write(PdfReader.getStreamBytes(prStream)) OutputStream = new FileOutputStream(new File(filename)) PrStream = (PRStream) PdfReader.getPdfObject(refs.getAsIndirectObject(key)) įilename = files.getAsString(key).toString() PdfDictionary refs = files.getAsDict(PdfName.EF) PdfDictionary files = filespecs.getAsDict(1) Private static void extractFiles(PdfReader pdfReader, PdfArray filespecs) PdfArray embeddedFilesArray = embeddedFiles.getAsArray(PdfName.NAMES) ĮxtractFiles(pdfReader, embeddedFilesArray) PdfDictionary embeddedFiles = names.getAsDict(PdfName.EMBEDDEDFILES) PdfDictionary names = catalog.getAsDict(PdfName.NAMES) PdfDictionary catalog = pdfReader.getCatalog() PdfReader pdfReader = new PdfReader(FILE_NAME) Private static final String FILE_NAME = 'HelloWorld.pdf' In this section we will see how we can extract an attached file from the PDF.ĮxtractAttachment.java package In the previous example, we saw how we can attach a file to the PDF document.

It also applies proper encoding to the Fonts we have selected which are to be written to the PDF file.įig 1 : Read PDF Using Itext 3. The .PdfContentByte class is used to get the exact location where the file is to be modified like page number, under the existing content, over the existing content, x & y pivot positions etc. It is possible to add images and files in a similar fashion. Then we pass the instance of this class to .PdfStamper which creates a new PDF file and adds the content of the existing file along-with the extra Text we added. We create an instance of .PdfReader class by passing the Filename of the PDF we wish to read. PdfContentByte content = pdfStamper.getUnderContent(1) //1 for the first pageīaseFont bf = BaseFont.createFont(BaseFont.TIMES_ITALIC, BaseFont.CP1250, BaseFont.EMBEDDED) Ĭontent.showTextAligned(PdfContentByte.ALIGN_CENTER, 'JavaCodeGeeks', 250,650,0) PdfStamper pdfStamper = new PdfStamper(pdfReader, new FileOutputStream('Rewritten HelloWorld.pdf')) PdfReader pdfReader = new PdfReader('HelloWorld.pdf') Here’s a simple class that reads the PDF File and prints it out in the console and also writes to a separate PDF File. Now the project setup is complete and we can start with reading the PDF files. Now, import the maven dependencies using the below pom.xml: Let’s get started by creating a simple Maven project.

Put name an pdf itext