How to add Header and footer to my PDF using Itext in java

Question

I want to add a header image and page numbers as footer to my PDF file. How can I add header and footer to my PDF file using Itext?

import java.io.FileNotFoundException;
import java.io.FileOutputStream;

import com.itextpdf.text.BaseColor;
import com.itextpdf.text.Chunk;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Font;
import com.itextpdf.text.Header;
import com.itextpdf.text.Image;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.PdfPCell;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;

public class Demo {
/**
* @param args
*/
public static void main(String[] args) {
new Demo().createPDF();
}
public void createPDF(){
Document document = new Document (PageSize.A4);
try {
PdfWriter.getInstance(document, new FileOutputStream("C:/Documents and Settings/mnavya/Desktop/AddImage.pdf"));
document.open ();
document.addCreator("Binod by Demo.java");
document.addAuthor("Binod Suman");
document.addTitle("First PDF By Binod");
Image image = Image.getInstance("https://snaplogic-h.s3.amazonaws.com/uploads/partner/logo/24/stratappa.jpg?u=1382443264");
image.scaleAbsolute(50,50);
document.add(image);

Paragraph paragraph = new Paragraph(
        " Factors",new Font(Font.FontFamily.HELVETICA, 25));
document.add(paragraph);
document.add(Chunk.SPACETABBING);

PdfPTable table = new PdfPTable(8);
table.setWidthPercentage(100);
float[] columnWidths = new float[] { 7, 20, 9, 9, 9, 9, 5, 3 };
table.setWidths(columnWidths);

PdfPCell cell = new PdfPCell();
cell.setColspan(8);
cell.setBackgroundColor(BaseColor.LIGHT_GRAY);
table.addCell(cell);
table.addCell(" ");
table.addCell(" ");
table.addCell("");
table.addCell("");
table.addCell("%");
table.addCell("");
table.addCell(" ");
table.addCell(" ");
document.add(table);
document.close ();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (DocumentException e) {
e.printStackTrace();
}catch (Exception e) {
e.printStackTrace();
}
System.out.println("******** PDF Created ***************");
}
}

Answer 1

Footer Header utils:

import com.itextpdf.text.Document;
import com.itextpdf.text.Element;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.pdf.ColumnText;
import com.itextpdf.text.pdf.PdfPageEventHelper;
import com.itextpdf.text.pdf.PdfWriter;

public class HeaderFooterPageEvent extends PdfPageEventHelper {

    public void onStartPage(PdfWriter writer, Document document) {
        ColumnText.showTextAligned(writer.getDirectContent(), Element.ALIGN_CENTER, new Phrase("Top Left"), 30, 800, 0);
        ColumnText.showTextAligned(writer.getDirectContent(), Element.ALIGN_CENTER, new Phrase("Top Right"), 550, 800, 0);
    }

    public void onEndPage(PdfWriter writer, Document document) {
        ColumnText.showTextAligned(writer.getDirectContent(), Element.ALIGN_CENTER, new Phrase("http://www.xxxx-your_example.com/"), 110, 30, 0);
        ColumnText.showTextAligned(writer.getDirectContent(), Element.ALIGN_CENTER, new Phrase("page " + document.getPageNumber()), 550, 30, 0);
    }

}

Use HeaderFooterPageEvent:

ByteArrayOutputStream bos = new ByteArrayOutputStream();
Document document = new Document(PageSize.A4, 20, 20, 50, 25);
PdfWriter writer = PdfWriter.getInstance(document, baos);
HeaderFooterPageEvent event = new HeaderFooterPageEvent();
writer.setPageEvent(event);

EDIT (add image sample):

public void onStartPage(PdfWriter writer, Document document) {
    String img = APPLICATION_SERVER_ROOT_PATH + File.separator + "assets" + File.separator + "images" + File.separator + "logo-tp-white.png";
    Image image;
    try {
        image = Image.getInstance(img);
        image.setAlignment(Element.ALIGN_RIGHT);
        image.setAbsolutePosition(20, 790);
        image.scalePercent(7.5f, 7.5f);
        writer.getDirectContent().addImage(image, true);
    } catch (IOException | DocumentException e) {
        log.error("L'image logo-tp-50x50.png a provoqué une erreur.", e);
    }

    ColumnText.showTextAligned(writer.getDirectContent(), Element.ALIGN_CENTER, new Phrase(""), 30, 800, 0);
    ColumnText.showTextAligned(writer.getDirectContent(), Element.ALIGN_CENTER, new Phrase(Constants.GLOBAL_HOST + " pour réussir votre prochain concours."), 400, 800, 0);
}

Answer 2

 HeaderFooter event = new HeaderFooter();
  writer.setBoxSize("art", new Rectangle(36, 54, 559, 788));
  writer.setPageEvent(event);

document itxt

ejemplo example of PDF