itext页脚和页眉图像

Question

如何在pdf文件中添加页脚和页眉。

这是我需要添加到页脚的数据

我尝试过的示例代码：（仍处于早期阶段）

class Hello extends PdfPageEventHelper {
  public void onStartPage(PdfWriter pdfWriter, Document document) {
      System.out.println("onStartPage() method > Writing header in file");
      Rectangle rect = pdfWriter.getBoxSize("rectangle");

      // TOP LEFT
      ColumnText.showTextAligned(pdfWriter.getDirectContent(),
               Element.ALIGN_CENTER, new Phrase("TOP LEFT"), rect.getLeft(),
               rect.getTop(), 0);

      // TOP MEDIUM
      ColumnText.showTextAligned(pdfWriter.getDirectContent(),
               Element.ALIGN_CENTER, new Phrase("TOP MEDIUM"),
               rect.getRight() / 2, rect.getTop(), 0);

      // TOP RIGHT
      ColumnText.showTextAligned(pdfWriter.getDirectContent(),
               Element.ALIGN_CENTER, new Phrase("TOP RIGHT"), rect.getRight(),
               rect.getTop(), 0);
  }

  public void onEndPage(PdfWriter pdfWriter, Document document) {
      System.out.println("onEndPage() method > Writing footer in file");
      Rectangle rect = pdfWriter.getBoxSize("rectangle");
      // BOTTOM LEFT
    /*  ColumnText.showTextAligned(pdfWriter.getDirectContent(),
               Element.ALIGN_CENTER, new Phrase("BOTTOM LEFT"),
               rect.getLeft()+15, rect.getBottom(), 0);*/

      // BOTTOM MEDIUM
      ColumnText.showTextAligned(pdfWriter.getDirectContent(),
               Element.ALIGN_CENTER, new Phrase("Apollo Munich Health Insurance Co. Ltd."),
               rect.getRight() / 2, rect.getBottom(), 0);


     /* // BOTTOM RIGHT
      ColumnText.showTextAligned(pdfWriter.getDirectContent(),
               Element.ALIGN_CENTER, new Phrase("BOTTOM RIGHT"),
               rect.getRight()-10, rect.getBottom(), 0);*/
  }
}

public class TestPdf extends
      PdfPageEventHelper {

  public static void main(String[] args) throws DocumentException, IOException {
      String pdfFilePath = "D:/Header.pdf";
      OutputStream fos = new FileOutputStream(new File(pdfFilePath));
      Document document = new Document();
      PdfWriter pdfWriter = PdfWriter.getInstance(document, fos);

      Rectangle rectangle = new Rectangle(30, 30, 550, 800);
      pdfWriter.setBoxSize("rectangle", rectangle);
      Hello headerAndFooter = 
                               new Hello();
      pdfWriter.setPageEvent(headerAndFooter);
      document.open();
      document.add(new Paragraph("This is Header and Footer in Pdf Using Itext Example"));
      document.close();
      fos.close();
      System.out.println("PDF created in >> " + pdfFilePath);
  }

}

我尝试将文本添加到页脚。但是我做不到。在需要与图像一起放置的页眉和页脚文本下方

标题：

页脚：