Dart

PEPPOL Document Validation

See more HTTP Misc Examples

Demonstrates how to call a Web service to validate your PEPPOL documents according to the latest PEPPOL rules. The validation service requires UBL files. Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // This example assumes the Chilkat HTTP API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  // --------------------------------------------------------------------------------
  // Also see Chilkat's Online WSDL Code Generator
  // to generate code and SOAP Request and Response XML for each operation in a WSDL.
  // --------------------------------------------------------------------------------

  final http = CkHttp();

  // We are sending the following POST:

  // POST /wsdvs HTTP/1.1
  // Host: peppol.helger.com
  // Content-Type: application/soap+xml; charset=utf-8
  // Content-Length: <length>
  // 
  // <?xml version="1.0"?>
  // <S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/">
  // <S:Body>
  // <validateRequestInput xmlns="http://peppol.helger.com/ws/documentvalidationservice/201701/" VESID="eu.peppol.bis2:t10:3.3.0" displayLocale="en">
  // <XML>...ENTITY_ENCODED_INVOICE_XML_GOES_HERE...</XML>
  // </validateRequestInput>
  // </S:Body>
  // </S:Envelope>

  // Build the SOAP XML shown above.
  // First load the PEPPOL invoice that will be the data contained in the <XML>...</XML> SOAP element.
  // We are using the XML invoice obtained from https://github.com/austriapro/ebinterface-standards/blob/master/schemas/ebInterface5p0/samples/ebinterface_5p0_sample_ecosio.xml
  final sbPeppolInvoiceXml = CkStringBuilder();
  sbPeppolInvoiceXml.loadFile('qa_data/xml/peppol_invoice.xml', 'utf-8');

  final xml = CkXml();
  xml.tag = 'S:Envelope';
  xml.addAttribute('xmlns:S', 'http://schemas.xmlsoap.org/soap/envelope/');
  xml.updateAttrAt('S:Body|validateRequestInput', true, 'xmlns', 'http://peppol.helger.com/ws/documentvalidationservice/201701/');
  xml.updateAttrAt('S:Body|validateRequestInput', true, 'VESID', 'at.ebinterface:invoice:5.0');
  xml.updateAttrAt('S:Body|validateRequestInput', true, 'displayLocale', 'en');
  xml.updateChildContent('S:Body|validateRequestInput|XML', sbPeppolInvoiceXml.getAsString());

  // We don't need to specify the Content-Length or Host headers.  Chilkat automatically adds them.

  // Send the request...
  final resp = CkHttpResponse();
  try {
    http.httpStr('POST', 'https://peppol.helger.com/wsdvs', xml.getXml(), 'utf-8', 'text/xml', resp);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('Response Status Code = ${resp.statusCode}');

  final respXml = CkXml();
  respXml.loadXml(resp.bodyStr);

  print('Response XML:');
  print(respXml.getXml());

  // A success repsonse looks like this:

  // <?xml version="1.0" encoding="UTF-8"?>
  // <S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/">
  //     <S:Body>
  //         <validateResponseOutput xmlns="http://peppol.helger.com/ws/documentvalidationservice/201701/" success="true" interrupted="false" mostSevereErrorLevel="SUCCESS">
  //             <Result success="true" artifactType="xsd" artifactPath="/schemas/ebinterface/ebinterface-5.0.xsd"/>
  //         </validateResponseOutput>
  //     </S:Body>
  // </S:Envelope>
}