PDFBox按钮执行javascript以关闭文档

import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotationWidget;
import org.apache.pdfbox.pdmodel.interactive.form.*;

import java.io.IOException;

public class PDFBoxExample {
    public static void main(String[] args) {
        try {
            PDDocument document = new PDDocument();
            PDPage page = new PDPage();
            document.addPage(page);

            PDAcroForm acroForm = new PDAcroForm(document);
            document.getDocumentCatalog().setAcroForm(acroForm);

            PDButton button = new PDButton(acroForm);
            button.setPartialName("CloseButton");
            button.setPushButton(true);

            PDAnnotationWidget widget = button.getWidgets().get(0);
            widget.setRectangle(new PDRectangle(100, 100, 100, 50));
            widget.setPage(page);

            PDActionJavaScript action = new PDActionJavaScript("this.closeDoc();");
            widget.setAction(action);

            acroForm.getFields().add(button);

            document.save("output.pdf");
            document.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}