Pascal (Lazarus/Delphi)

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. Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Http,
  Chilkat.StringBuilder,
  Chilkat.HttpResponse,
  Chilkat.Xml;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  http: THttp;
  sbPeppolInvoiceXml: TStringBuilder;
  xml: TXml;
  resp: THttpResponse;
  respXml: TXml;

begin
  success := False;

  //  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.
  //  --------------------------------------------------------------------------------

  http := THttp.Create;

  //  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
  sbPeppolInvoiceXml := TStringBuilder.Create;
  success := sbPeppolInvoiceXml.LoadFile('qa_data/xml/peppol_invoice.xml','utf-8');

  xml := TXml.Create;
  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...
  resp := THttpResponse.Create;
  success := http.HttpStr('POST','https://peppol.helger.com/wsdvs',xml.GetXml(),'utf-8','text/xml',resp);
  if (success = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  WriteLn('Response Status Code = ' + resp.StatusCode);

  respXml := TXml.Create;
  respXml.LoadXml(resp.BodyStr);

  WriteLn('Response XML:');
  WriteLn(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>


  http.Free;
  sbPeppolInvoiceXml.Free;
  xml.Free;
  resp.Free;
  respXml.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.