(MFC) 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 C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkXml.h>

void ChilkatSample(void)
    {
    CkString strOut;

    CkXml xml;

    bool success = xml.LoadXmlFile("qa_data/soap/soapWithPdf.xml");
    if (success != true) {
        strOut.append(xml.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        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>

    CkXml *pdfElement = xml.FindChild("s:Body|ObtenerPDFResponse|ObtenerPDFResult|a:PDF");
    if (xml.get_LastMethodSuccess() != true) {
        strOut.append("Did not find the PDF element at the expected location.");
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    success = pdfElement->SaveBinaryContent("qa_output/out.pdf",false,false,"");
    if (success != true) {
        strOut.append(xml.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    strOut.append("Successfully extracted and saved the PDF.");
    strOut.append("\r\n");


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }