Simple iText Reading PDF | ||||
| PdfReader You can't 'parse' an existing PDF file using iText, you can only 'read' it page per page. What does this mean? The pdf format is just a canvas where text and graphics are placed without any structure information. As such there aren't any 'iText-objects' in a PDF file. In each page there will probably be a number of 'Strings', but you can't reconstruct a phrase or a paragraph using these strings. There are probably a number of lines drawn, but you can't retrieve a Table-object based on these lines. In short: parsing the content of a PDF-file is NOT POSSIBLE with iText (not if you want good results: there are ways to retrieve text from an existing PDF). Post your question on the newsgroup news://comp.text.pdf and maybe you will get some answers from people that have built tools that can parse PDF and extract some of its contents, but don't expect tools that will perform a bullet-proof conversion to structured text. What iText DOES provide is the possibility to READ a PDF document and copy an entire page of this file into the PDF file you are constructing from scratch. This can be useful if you want to create a new document based on (an) existing document(s). You can add a Watermark, pagenumbers,... Chap13_pdfreader takes a pdf file from Chapter 7 and creates a new document where 4 pages of the original document are painted on 1 page of the new document. We also added a Watermark and pagenumbers (see Chap13_pdfreader.pdf). In order to fully understand the code (an how to adapt it to your needs, you will have to read Chapter 10 first) If you have an existing PDF file that represents a form, you could copy the pages of this form and paint text at precise locations on this form. You can't edit an existing PDF document, by saying: for instance replace the word Louagie by Lowagie. To achieve this, you would have to know the exact location of the word Louagie, paint a white rectangle over it and paint the word Lowagie on this white rectangle. Please avoid this kind of 'patch' work. Do your PDF editing with an Adobe product. com.lowagie.tools.* In package com.lowagie.tools, there are 4 little tools that can be called from the command line:
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