David Woosley wrote:
I have the following Java code in my JSP. I'm attempting to open a source
template and write a small block of text on it.
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As best I understand iText,
this seems like a very simple thing to accomplish, as follows:
// START OF CODE ===============================
PdfReader reader = new PdfReader("source.pdf");
PdfStamper stamper = new PdfStamper(reader, new
FileOutputStream("target.pdf"));
Don't do this:
PdfWriter writer = stamper.getWriter();
PdfContentByte contentByte = writer.getDirectContent();
Do this instead:
PdfContentByte contentByte = stamper.getUnderContent(pagenumber);
or
PdfContentByte contentByte = stamper.getOverContent(pagenumber);
Font font = FontFactory.getFont(FontFactory.TIMES_ROMAN, 9);
Phrase phrase = new Phrase("Hello",font);
ColumnText columnText = new ColumnText(contentByte);
columnText.setSimpleColumn(100f, 100f, 300f, 300f);
columnText.setAlignment(Element.ALIGN_JUSTIFIED);
columnText.addText(phrase);
// At this point, none of the above objects are null
// and everything looks great, until we hit this line ...
int status = columnText.go(false); // KABOOM!
// END OF CODE ===================================
I get a null exception. If I simulate writing with columnText.go(true),
then I don't get the error. Help? Any suggestions?
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