pdfbox cannot find symbol - pdf

Question

I'm using code suggested a while ago by #ASu :
package pdf_form_filler;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDDocumentCatalog;
import org.apache.pdfbox.pdmodel.interactive.form.*;
import java.io.File;
import java.util.*;
public class pdf_form_filler {
public static void listFields(PDDocument doc) throws Exception {
PDDocumentCatalog catalog = doc.getDocumentCatalog();
PDAcroForm form = catalog.getAcroForm();
List<PDFieldTreeNode> fields = form.getFields();
for(PDFieldTreeNode field: fields) {
Object value = field.getValue();
String name = field.getFullyQualifiedName();
System.out.print(name);
System.out.print(" = ");
System.out.print(value);
System.out.println();
}
}
public static void main(String[] args) throws Exception {
File file = new File("test.pdf");
PDDocument doc = PDDocument.load(file);
listFields(doc);
}
}
However, i keep getting a cannot find symbol error for PDFieldTreeNode. I have the latest pdfbox (2.0.4) but I cannot find the class in it anyway. I tried using this with PDField instead but then get error for .getValue

Answer 1

To get all terminal fields, do this:
Iterator<PDField> fieldIterator = catalog.getAcroForm();
while (fieldIterator.hasNext())
{
PDField pdField = fieldIterator.next();
// do stuff with the field
}
form.getFields() only gets the top level fields, including nonterminal fields (i.e. fields with no value but children).
A more advanced example can be found in the PrintFields.java example.