Hi Paulo,
I tried what I understood but I could not achieve my goal.
Below is chunk of my code that I am doing and I am getting exception.
Can you please do me a favour to send me a sample code?
I AM GETTING EXCEPTION AS:
at line (obj_pdfStamper.addAnnotation(signature, a_iPageNum);)
//=============================
java.lang.NullPointerException
at com.lowagie.text.pdf.PdfStamperImp.addAnnotation
(PdfStamperImp.java:897)
at com.lowagie.text.pdf.PdfStamperImp.addAnnotation
(PdfStamperImp.java:948)
at com.lowagie.text.pdf.PdfStamper.addAnnotation(PdfStamper.java:375)
//=============================
//----------------------------------------------------
FileOutputStream obj_fos = new FileOutputStream
(m_objPDFSig.m_objInputPDFDocument.getAbsolutePath()+"-.pdf");
PdfStamper obj_pdfStamper = new PdfStamper(m_objPDFSig.getPDFReader(),
obj_fos);
PdfWriter obj_pdfWriter = obj_pdfStamper.getWriter();
PdfFormField signature = PdfFormField.createSignature(obj_pdfWriter);
obj_pdfStamper.addAnnotation(signature, a_iPageNum);
signature.setWidget(new com.lowagie.text.Rectangle(a_iLLX, a_iLLY, a_iURX,
a_iURY), PdfAnnotation.HIGHLIGHT_INVERT);
signature.setFieldName(a_strName);
signature.setFlags(PdfAnnotation.FLAGS_PRINT);
signature.setPage();
signature.setMKBorderColor(java.awt.Color.black);
signature.setMKBackgroundColor(java.awt.Color.white);
PdfContentByte cb = obj_pdfWriter.getDirectContent();
PdfAppearance tp = cb.createAppearance(a_iURX - a_iLLX, a_iURY - a_iLLY);
tp.setGrayFill(1.0f);
tp.rectangle(0, 0, a_iURX - a_iLLX, a_iURY - a_iLLY);
tp.fill();
tp.setGrayStroke(0);
tp.setLineWidth(1);
tp.rectangle(0.5f, 0.5f, a_iURX - a_iLLX - 0.5f, a_iURY - a_iLLY - 0.5f);
tp.closePathStroke();
tp.saveState();
tp.rectangle(1, 1, a_iURX - a_iLLX - 2, a_iURY - a_iLLY - 2);
tp.clip();
tp.newPath();
tp.restoreState();
signature.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, tp);
obj_pdfStamper.addAnnotation(signature, a_iPageNum);
obj_pdfWriter.addAnnotation(signature);
obj_pdfStamper.close();
//----------------------------------------------------
--------- Paulo Soares Message ---------
That exception says it all. Go to PdfAcroForm.addSignature() source and
copy what's in it. The result will be a PdfAnnotation that you can add
to the doc with obj_pdfStamper.addAnnotation(annot).
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