On 26/03/2013 17:16, Emi Lu wrote:
> Hello,
>
> Is there a simple example about the following steps please?
>
> Purpose: Based on existing a.pdf, to write more info, and print through
> web servlet GUI.
>
> Steps to be done:
> (1) copy a.pdf to dynamic_pdf2.pdf

Why do you need to copy a.pdf? Can't you just read a.pdf into a 
PdfReader object and use a PdfStamper that creates bytes in memory?

> (2) write to dynamic_pdf2.pdf

I don't think this step is necessary.

> (3) output dynamic_pdf2.pdf from servlet web GUI
>
If you have a PdfStamper that creates bytes in memory, your servlet can 
send those bytes to the browser. The browser will open a PDF viewer and 
show the PDF.

For an example: http://itextpdf.com:8180/book/form
Fill out this form, click post, and you'll get a form that is filled out.
For the code: http://itextpdf.com/examples/iia.php?id=170

If you don't understand the code or if you're tempted to say "it doesn't 
work", please read the book first.

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