I am putting a single line of info to the end of first page of a PDF document by using PdfStamper class. Now I need to update that info periodically. How can I modify the text I stamped previously, is there a way for it?
Thanks.
See this post from Bruno Lowagie (the creator of iText) about PDF not being a word processor. In that post he talks about using forms instead to accomplish what you are looking for which is one route you can go down.
The second route, which I'd recommend, is just having two PDFs. Have your base PDF that you open, write to and save to your output PDF. When you need to update the PDF, delete the output PDF, re-open the base PDF, write your new text and save it to the output PDF again. This accomplishes your goals without having to edit anything.
Related
I am using openxml to generate my word file that contains user input messages and attachment if there are any. Now, I am stuck in a situation where I don't know how to display PDF /JPEG/JPG if user attached such things with the inputted message.
Is there any way I can show the above attached in my generated word file.
Thanks
MSDN has the specific example of adding the images to the document. The sample code you could use is provided here.
http://msdn.microsoft.com/en-us/library/bb497430%28v=office.14%29.aspx
I am working on a basic project that reads pdf files from a server and show them on the screen.
The issue is that i want to read that files from right to left as a page.
Like Massimo Cafaro say :
If you want to extract some content from a pdf file, then you may want to read the following:
Parsing PDF Content
from the Quartz 2D programming guide.
Basically, you will use a CGPDFScanner object to parse the contents, which works as follows. You register a few callbacks that will be automatically invoked by Quartz 2D upon encountering some pdf operators in the pdf stream. After this initial step, you then actually start parsing the pdf stream.
Taking a brief look at your code, it appears that you are not following the steps required to parse the pdf content of the page you get through CGPDFDocumentGetPage(). You need first to setup the callbacks using CGPDFOperatorTableCreate() and CGPDFOperatorTableSetCallback(), then you get the page, you need to create a content stream using that page (using CGPDFContentStreamCreateWithPage()) and then instantiate a CGPDFScanner through CGPDFScannerCreate() and actually start scanning through CGPDFScannerScan().
The "Parsing PDF Content" section of the document pointed out by the above URL gives you all of the information required to implement pdf parsing.
if you don't try anything you can start with this project link
I have a requirement to read a pdf file having tabular format data only like in excel file. I need to extract the cell value of given pdf file.
Is it be anyhow possible using itext API. If you have something to share then please share it or any other solutions?
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.
You can try this! This lets you read PDF pages.
I recently ran into this problem. I wasn't able to make it work with itext.
An alternate solution I found was to open a PDF document in Adobe and export it to xml. At least with my PDF's it preserved the table information and then I was able to programmatically work with the XML to generate tabular files like excel etc.
The other issue I ran into was that Adobe only lets you export one file at a time and I had lots of files. Luckily Adobe also has a merge function. I ended up merging all the files together and then exporting them as one big XML file and working with that file to generate what I needed.
I have a PDF file (softcopy) which was created using iText. Now my company decided to use JasperReports for new release. I need to use that PDF file (softcopy) and need to design JasperReports template and need to populate data.
Do we have any plugin in JasperReports that can convert from PDF to JasperReports JRXML or what do I need to do? Any suggestions?
A PDF is a description of how to render a document on a page. Things
like "draw a vertical line here", "write 'foo bar baz' here in
Courier". It does not contain any information about the format or
organisation of the stuff it is rendering. You won't be able to tell
that you're looking at a table, or a list of bullet points, or a
paragraph, or anything like that.
The PDF format does contain information on a page-by-page basis.
Therefore, page breaks are the one piece of format/organisation
information that you can find.
If you want anything more than a raw stream of completely unformatted,
disorganised text, one per page, you are out of luck. It's virtually
impossible.
from javaranch
You can use http://xmlprinter.com/ and then use a xslt to transform the resulted xml to the desired jrxml.
I'm working in it. If I finish it, i will post the result on github or any other public and open place.
Good Luck
I have a three page Word document that needs to be converted into PDF. This Word document was given to me as a template to show me what the PDF output should look like. I tried converting this document into PDF, created a PDF form and used iTextSharp to open the form, populate it with data and return it back to the client. This is all great but due to large amounts of data stored, the placeholders were insufficient and the text would be truncated or hidden.
My second attempt was to create an MVC 2 View without master page, pass the model to the view, take the HTML representation of the View, pass it over to iTextSharp and render the PDF. The problem here was that iTextSharp failed on some tags (one of them was <hr> tag). I managed to get rid of the problematic tag, but then tables were not rendered properly. Namely, the border attribute was ignored so I ended up with borderless tables. That attempt failed.
I need a suggestion or advice on the most efficient way to create a PDF document in MVC 2 which would be maintainable in the long run. I really don't want my actions to be 200+ lines long. Working directly with the Word document is not the best solution as I have never worked with VSTO so I don't quite know what it would look like to open Word and manipulate text inside of it and add dynamic data and then convert that dynamically into PDF.
Any suggestion is highly welcome.
Best regards!
One thing that I've done in the past is to save the Word file as a DOCX and unzip it since DOCX is just a renamed zip file. Within the archive open up /word/document.xml and you'll see your document. There's a lot of weird XML tags in there but overall you should get a pretty good idea of where your content is. Then just add placeholder text like {FIRST_NAME}, save the file and re-zip.
Then from code you can just perform the same steps, unzipping with something like SharpZipLib or DotNetZip, swapping placeholder copy, re-zipping and then using very simple Word automation to Save-As a PDF.
The other route is to fully utilize iTextSharp and actually write Paragraphs and PdfPTable and everything else. It takes a lot longer to setup but would give you the most control.
Q: you say "... but due to large amounts of data stored, the placeholders were insufficient and the text would be truncated or hidden"
How do you end up having to much data ? If the word template can "hold" the data in 3 pages, they should fit in 3 PDF pages.
I used to use iTextSharp to create my PDF's, but I also almost always ended up building the PDF document from scratch myself.(not really a <200 line solution) Have you considerate another library, I recently switched to MigraDoc's PDFSharp.Way simpler to use then iText, lotsa examples / docus
Just my two cents
Word documents object model is quite easy to understand. It will either contain series of Paragraphs or Tables. Using the Open XML SDK, you can iterate through each paragraph/table in the word document and retrieve it's content and styles. Then you can generate PDF document on the fly using those retrieved information. This will work under MVC too.
But if your word document contains complex elements, then it will take some more time for you to implement based on this approach. Also, this approach would only work with (Word 2007 and 2010) files.
Also, HTML to PDF options currently available in the ITextSharp library would work with only known set of tags, as far as I know.
Another suggestion is to make use of commercially available .NET components. There are lot of good solution available. For ex: Syncfusion