Adding page numbers to an existing PDF
In this example, we use ColumnText
to add page numbers to an existing PDF document.
stamppagexofy
JAVA
JAVA
package sandbox.stamper;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.pdf.ColumnText;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfStamper;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import sandbox.WrapToTest;
@WrapToTest
public class StampPageXofY {
public static final String SRC = "resources/pdfs/nameddestinations.pdf";
public static final String DEST = "results/stamper/pagenumbers.pdf";
public static void main(String[] args) throws IOException, DocumentException {
File file = new File(DEST);
file.getParentFile().mkdirs();
new StampPageXofY().manipulatePdf(SRC, DEST);
}
public void manipulatePdf(String src, String dest) throws IOException, DocumentException {
PdfReader reader = new PdfReader(src);
int n = reader.getNumberOfPages();
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(dest));
PdfContentByte pagecontent;
for (int i = 0; i < n; ) {
pagecontent = stamper.getOverContent(++i);
ColumnText.showTextAligned(pagecontent, Element.ALIGN_RIGHT,
new Phrase(String.format("page %s of %s", i, n)), 559, 806, 0);
}
stamper.close();
reader.close();
}
}