Dart

Extract and Save PDF from SOAP XML

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Demonstrates how to extract and save PDF file that is embedded in SOAP XML (or any XML). Dart

import 'package:chilkat/chilkat.dart';

void main() {
  final xml = CkXml();

  try {
    xml.loadXmlFile('qa_data/soap/soapWithPdf.xml');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // The XML we loaded looks like this:

  // <?xml version="1.0" encoding="utf-8" ?>
  // <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
  //     <s:Body>
  //         <ObtenerPDFResponse xmlns="http://xyz.org/">
  //             <ObtenerPDFResult xmlns:a="http://schemas.xyz.org/something" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
  //                 <a:CBB i:nil="true" />
  //                 <a:CodigoConfirmacion i:nil="true" />
  //                 <a:ErrorDetallado />
  //                 <a:ErrorGeneral i:nil="true" />
  //                 <a:FechaGenerada i:nil="true" />
  //                 <a:FolioGenerado i:nil="true" />
  //                 <a:OperacionExitosa>true</a:OperacionExitosa>
  //                 <a:PDF>JVBERi0xLjQKJe...</a:PDF>
  //                 <a:XML i:nil="true" />
  //             </ObtenerPDFResult>
  //         </ObtenerPDFResponse>
  //     </s:Body>
  // </s:Envelope>

  final CkXml pdfElement;
  try {
    pdfElement = xml.findChild('s:Body|ObtenerPDFResponse|ObtenerPDFResult|a:PDF');
  } on ChilkatException {
    print('Did not find the PDF element at the expected location.');
    return;
  }

  try {
    pdfElement.saveBinaryContent('qa_output/out.pdf', false, false, '');
  } on ChilkatException {
    print(xml.lastErrorText);
    return;
  }

  print('Successfully extracted and saved the PDF.');
}