Exporter des données

public String getFormData(Document pdfForm) {
   DocumentBuilderFactory factory = null;
   DocumentBuilder builder = null;
   org.w3c.dom.Document xmlDocument = null;

   try {
      Document xmlData = formsService.exportData(pdfForm, DataFormat.Auto);
      xmlData.copyToFile(new File("xmlData.xml"));
      factory = DocumentBuilderFactory.newInstance();
      factory.setNamespaceAware(true);
      builder = factory.newDocumentBuilder();
      xmlDocument = builder.parse(xmlData.getInputStream());

      org.w3c.dom.Node xdpNode = xmlDocument.getDocumentElement();
      log.debug("Got xdp " + xdpNode.getNodeName());
      org.w3c.dom.Node datasets = getChildByTagName(xdpNode, "xfa:datasets");
      log.debug("Got datasets " + datasets.getNodeName());
      org.w3c.dom.Node data = getChildByTagName(datasets, "xfa:data");
      log.debug("Got data " + data.getNodeName());
      org.w3c.dom.Node topmostSubform = getChildByTagName(data, "topmostSubform");

      if (topmostSubform != null) {

         org.w3c.dom.Document newXmlDocument = builder.newDocument();
         org.w3c.dom.Node importedNode = newXmlDocument.importNode(topmostSubform, true);
         newXmlDocument.appendChild(importedNode);
         Document aemFDXmlDocument = documentServices.orgw3cDocumentToAEMFDDocument(newXmlDocument);
         aemFDXmlDocument.copyToFile(new File("aemFDXmlDocument.xml"));
         // saveDocumentInCrx is an utility method of the custom DocumentServices service.
         return documentServices.saveDocumentInCrx("/content/exporteddata", ".xml", aemFDXmlDocument);
      }

   } catch (Exception e) {
      log.debug("Error:  " + e.getMessage());

   }
   return null;
}

private static org.w3c.dom.Node getChildByTagName(org.w3c.dom.Node parent, String tagName) {
   NodeList nodeList = parent.getChildNodes();
   for (int i = 0; i < nodeList.getLength(); i++) {
      org.w3c.dom.Node node = nodeList.item(i);
      if (node.getNodeType() == org.w3c.dom.Node.ELEMENT_NODE && node.getNodeName().equals(tagName)) {
         return node;
      }
   }
   return null;
}