Hello All,
I as using Aspose version 19.1 and I am trying to apply page stamp in the PDFs. But for some specific documents I am getting NullPointerException .However this happens only for few specific documents while for other it is working fine.Can anyone please suggest why I am getting NullPointerException during saving the document.
my java code looks like :
public void applyPageStamp(Document doc, String stamp) throws FNAException {
Font font = FontRepository.findFont("Helvetica", true);
PageCollection pages = doc.getPages();
for (Page page : pages) {
writeToPage(font, fontSize, doc, page, stamp);
}
}
private void writeToPage(Font font, float fontSize, Document doc,
Page page, String text) throws FNAException {
// create text stamp
TextStamp textStamp = new TextStamp(text);
int margin = 15;
textStamp.setHorizontalAlignment(HorizontalAlignment.Right);
textStamp.setVerticalAlignment(VerticalAlignment.Top);
textStamp.setTopMargin(margin);
textStamp.setRightMargin(margin);
// set text properties
textStamp.getTextState().setFont(font);
textStamp.getTextState().setFontSize(fontSize);
// add stamp to particular page
page.addStamp(textStamp);
// save output document
**doc.save();**
}
ERROR:
2019-03-19 13:20:54,875 [http-bio-8080-exec-9] ERROR ( CERestImpl:92) - Error
java.lang.NullPointerException
at com.aspose.pdf.internal.l8f.l0v.lv(Unknown Source)
at com.aspose.pdf.internal.l9p.ld.lI(Unknown Source)
at com.aspose.pdf.internal.l8f.l0p.lf(Unknown Source)
at com.aspose.pdf.internal.l8f.l0t.lj(Unknown Source)
at com.aspose.pdf.internal.l0k.l0if.lh(Unknown Source)
at com.aspose.pdf.ADocument.l1n(Unknown Source)
at com.aspose.pdf.ADocument.save(Unknown Source)
at com.aspose.pdf.Document.save(Unknown Source)
at com.eurodyn.eips.fna.business.impl.AsposePDFServiceImpl.writeToPage(AsposePDFServiceImpl.java:812)
at com.eurodyn.eips.fna.business.impl.AsposePDFServiceImpl.applyPageStamp(AsposePDFServiceImpl.java:733)