(Delphi ActiveX) Extract and Save PDF from SOAP XML

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

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
xml: TChilkatXml;
success: Integer;
pdfElement: IChilkatXml;

begin
xml := TChilkatXml.Create(Self);

success := xml.LoadXmlFile('qa_data/soap/soapWithPdf.xml');
if (success <> 1) then
  begin
    Memo1.Lines.Add(xml.LastErrorText);
    Exit;
  end;

// 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>

pdfElement := xml.FindChild('s:Body|ObtenerPDFResponse|ObtenerPDFResult|a:PDF');
if (xml.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add('Did not find the PDF element at the expected location.');
    Exit;
  end;

success := pdfElement.SaveBinaryContent('qa_output/out.pdf',0,0,'');
if (success <> 1) then
  begin
    Memo1.Lines.Add(xml.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Successfully extracted and saved the PDF.');
end;