Adding page numbers using PDFBox

Question

How can I add page number to a page in a document generated using PDFBox?

Can anybody tell me how to add page numbers to a document after I merge different PDFs? I am u

Answer 1

It is easy, try the following code

public static void addPageNumbers(PDDocument document, String numberingFormat, int offset_X, int offset_Y) throws IOException {
        int page_counter = 1;
        for(PDPage page : document.getPages()){
            PDPageContentStream contentStream = new PDPageContentStream(document, page, PDPageContentStream.AppendMode.APPEND, true, false);
            contentStream.beginText();
            contentStream.setFont(PDType1Font.TIMES_ITALIC, 10);
            PDRectangle pageSize = page.getMediaBox();
            float x = pageSize.getLowerLeftX();
            float y = pageSize.getLowerLeftY();
            contentStream.newLineAtOffset(x+ pageSize.getWidth()-offset_X, y+offset_Y);
            String text = MessageFormat.format(numberingFormat,page_counter);
            contentStream.showText(text);
            contentStream.endText();
            contentStream.close();
            ++page_counter;
        }
    }



public static void main(String[] args) throws Exception {
        File file = new File("your input pdf path");
        PDDocument document = PDDocument.load(file);
        addPageNumbers(document,"Page {0}",60,18);
        document.save(new File("output pdf path"));
        document.close();
    }