To remove, or overwrite an object in pdfbox, the solution I found was one which uses the PDFStreamParser. Basically, you parse the stream to tokens, update them (you can for instance remove it, or change something in the token), and then write a new stream based on the tokens you have, using ContentStreamWriter. A good example is found on ReplaceStrings.java.
-----Mensagem original----- De: José Rodolfo Carrijo de Freitas [mailto:[email protected]] Enviada em: quinta-feira, 14 de outubro de 2010 10:39 Para: [email protected] Assunto: RES: Julien Plée solution to overwrite image Well, that could be a little problem, cause I cannot convert the tiff file, I need to keep it with minimized size. And for black and white images, its the best format. I´m trying to use the features of the PDCCitt class, I´ll post here when I find a solution. Thanks, José -----Mensagem original----- De: Julien Plée [mailto:[email protected]] Enviada em: quinta-feira, 14 de outubro de 2010 10:12 Para: [email protected] Assunto: Re: Julien Plée solution to overwrite image Hello José, I don't know much about image handling in PDF... But it looks like it only handles JPEG or PNG. If you want to embed images from another format, you first have to convert it. Thought I'm not familiar with this task so you'll have to take a look on tools capable of this task. Julien PLÉE 7 Avenue Barthélemy Salettes et Jean-Marie Manset 31320 Castanet-Tolosan France +33 6.50.00.60.48 Le 14 oct. 10 à 14:59, José Rodolfo Carrijo de Freitas a écrit : > On Aug 28, Julien Plée posted a solution to overwrite an image, it > seems to > work perfectly. > > But there is a problem with tiff images, maybe because with tiff we > should > use RandomAccessFile. > > > > Have someone made a hack so that the solution can be extended to tiff > images? > > > > > > InputStream newStream = new FileInputStream(inFile); > > OutputStream embeddedStream = > im.getCOSStream().createFilteredStream(); > > int bSize = 10240; > > byte[] b = new byte[bSize]; > > int bytesRead = 0; > > while ((bytesRead = newStream.read(b, 0, > bSize)) > -1) { > > > embeddedStream.write(b, 0, > bytesRead); > > } > > embeddedStream.close(); > > >
