解决方法
我想你正在寻找用PDF标记页面的水.请查看下面的代码.您也可以使用Watermarker类.
PdfReader reader = new PdfReader("text.pdf");
int n = reader.getNumberOfPages();
// Create a stamper that will copy the document to a new file
PdfStamper stamp = new PdfStamper(reader,new FileOutputStream("text1.pdf"));
int i = 1;
PdfContentByte under;
PdfContentByte over;
Image img = Image.getInstance("watermark.jpg");
BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA,BaseFont.WINANSI,BaseFont.EMBEDDED);
img.setAbsolutePosition(200,400);
while (i < n)
{
// Watermark under the existing page
under = stamp.getUnderContent(i);
under.addImage(img);
// Text over the existing page
over = stamp.getOverContent(i);
over.beginText();
over.setFontAndSize(bf,18);
over.showText("page " + i);
over.endText();
i++;
}
stamp.close();
问候,阿卜杜勒·奥拉卡拉
