Hi Andreas, sorry for the late reply. I didn't receive the email about your message.
The original document. No radio button is selected: https://signotecgmbh-my.sharepoint.com/:b:/g/personal/markus_mensinger_signotec_de/IQAG_LM96YsmR5Bbs-B6GdjZAe_Ohx5ZXtTrGjqhBhbnvlI?e=hLirvE Radio button "männlich" selected with PdfBox: https://signotecgmbh-my.sharepoint.com/:b:/g/personal/markus_mensinger_signotec_de/IQBd-bq-lOxGSoxfH6RRv1DiAd05O7Pq6qRBlJJBafeklP4?e=SHrniB Radio button "männlich" selected with Acrobat Pro: https://signotecgmbh-my.sharepoint.com/:b:/g/personal/markus_mensinger_signotec_de/IQB5nYOYQEJ8QJMizyMsxnTjAXDRsSO12tsNbvLwQxKbZ3Y?e=bNhHOR Thanks Markus > -----Ursprüngliche Nachricht----- > Von: Markus Mensinger via users <[email protected]> > Gesendet: Freitag, 6. Februar 2026 17:06 > An: [email protected] > Cc: Markus Mensinger <[email protected]> > Betreff: PdfBox renames RadioButton with Umlaut > > [Sie erhalten nicht häufig E-Mails von [email protected]. Weitere > Informationen, warum dies wichtig ist, finden Sie unter > https://aka.ms/LearnAboutSenderIdentification ] > > Hi PdfBox team, > > is the following maybe an issue in PdfBox? > > Steps to reproduce > =============== > 1. Create a document that contains a radio button with Umlaut in name. I can > give you an example document. > Let's say: A radio group "Geschlecht" with the buttons "männlich" and > "weiblich". > Do not use PdfBox for this step. I used Acrobat Pro 2020. > The name/value of the "männlich" button is encoded as "/m#e4nnlich" in the > PDF. > > 2. Update the value of the radio group with PdfBox to "männlich" and save it > to a > new document. > > import java.io.File; > import org.apache.pdfbox.Loader; > import org.apache.pdfbox.pdmodel.PDDocument; > > public class UpdateRadioGroup { > > private static final String INPUT_FILE = "form_empty.pdf"; > private static final String OUTPUT_FILE = "form_selected.pdf"; > private static final String FIELD_NAME = "Geschlecht"; > private static final String FIELD_VALUE = "männlich"; > > public static void main(String[] args) > throws Exception { > > try (PDDocument document = Loader.loadPDF(new File(INPUT_FILE))) { > document.getDocumentCatalog() > .getAcroForm(null) > .getField(FIELD_NAME) > .setValue(FIELD_VALUE); > > document.save(new File(OUTPUT_FILE)); > } > } > } > > 3. Validate the name/value of the "männlich" button in the new document in a > text editor. PdfBox encodes "männlich" to "/m#c3#a4nnlich" (see > COSName.writePDF() ). > > The problem > =============== > PdfBox renames the radio button from "männlich" to "männlich". Or > "/m#e4nnlich" to "/m#c3#a4nnlich" in PDF-format. > When you read the document again, PdfBox converts "#c3#a" to "ä" but all other > programs do not. I tested Acrobat Pro 2020, actual Acrobat Reader, PDFXplorer > from https://www.o2sol.com > > > Thanks > Markus > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
