[PDFBOX-3193] New NPE in PDFBox 1.8.11-rc1 in Acroform PDCheckbox's isChecked()

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.8.11
• Fix Version/s: 1.8.11
• Component/s: AcroForm
• Assignee: Tilman Hausherr
• Reporter: Tim Allison
• Created: 13/Jan/16 14:02
• Updated: 18/Jan/16 12:01
• Resolved: 13/Jan/16 16:58

Description

I ran the comparison code for 1.8.11-rc1 against 1.8.10 and found a new NPE in ~600 files out of ~350k.

java.lang.NullPointerException
	at org.apache.pdfbox.pdmodel.interactive.form.PDCheckbox.isChecked(PDCheckbox.java:57)
	at org.apache.pdfbox.pdmodel.interactive.form.PDRadioCollection.getValue(PDRadioCollection.java:128)
	at org.apache.tika.parser.pdf.PDF2XHTML.addFieldString(PDF2XHTML.java:657)
	at org.apache.tika.parser.pdf.PDF2XHTML.processAcroField(PDF2XHTML.java:616)
	at org.apache.tika.parser.pdf.PDF2XHTML.extractAcroForm(PDF2XHTML.java:602)
	at org.apache.tika.parser.pdf.PDF2XHTML.endDocument(PDF2XHTML.java:212)

To replicate the problem in PrintFields:

            outputString.append(" = " + fieldValue);
            outputString.append(",  type=" + field.getClass().getName());

+            if (field instanceof PDCheckbox)
+            {
+              outputString.append(" : "+((PDCheckbox)field).isChecked());
+            }

Issue Links

• is depended upon by: TIKA-1830 Upgrade to PDFBox 1.8.11 when available