Question

I dont know if what I am trying to do is even possible, and it might be too much work for something very insignificant. I have a servlet that creates a PDF. I am using iText to write to the created pdf, in my pdf I have a dynamic table that can change the size of the document. I would like to print “Continued on next page” at the bottom of the document whenever it needs to go to the next page. The problem is I will never know where the page break occurs in my document.

I am more than happy to add code to this, if this is possible. Also, if this isnt clear, feel free to ask questions, thanks.

EDIT: Probably talking to myself, but The only way that I think this is possible is if there is a method that realizes that a new page has just been created.

Answer 1

You can try to apply this snippet in your pdf generator class:

private static final float FOOTER_MARGIN = 15;
private static final float PAGE_MARGIN_LEFT = 36;
private static final float PAGE_MARGIN_RIGHT = 36;
private static final float PAGE_MARGIN_BOTTOM = 36 + FOOTER_MARGIN;
private static final float PAGE_MARGIN_TOP = 36;
private static final Rectangle PAGE_SIZE = PageSize.A4;

//Put this in your generator method
//..
Document document = new Document(PAGE_SIZE, 
         PAGE_MARGIN_LEFT, PAGE_MARGIN_RIGHT, PAGE_MARGIN_BOTTOM, MARGIN_TOP); 
PdfWriter writer = PdfWriter.getInstance(document, OUTPUT_STREAM); 
writer.setPageEvent(new HeaderFooter()); 
//..

private class HeaderFooter extends PdfPageEventHelper {

    @Override
    public void onEndPage(PdfWriter writer, Document document) {
        Phrase footerText = new Phrase("Continued On Next Page");
        ColumnText.showTextAligned(
                writer.getDirectContent(),
                Element.ALIGN_LEFT, footerText,
                PAGE_MARGIN_LEFT, PAGE_MARGIN_BOTTOM - FOOTER_MARGIN, 0);
    }
}

FYI, there are bunch of iText examples, in your case search for footer. Hope this helps.