Java

Insert PDF as Base64 into XML, then Extract back to PDF File

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Demonstrates how to insert any file into XML using base64 encoding, and then extract back to the original file. This example embeds a PDF in the XML, but the type of file does not matter. It can be any type of file. Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    // Load our PDF file.
    CkBinData bd = new CkBinData();
    success = bd.LoadFile("qa_data/helloWorld.pdf");
    if (success != true) {
        System.out.println("Failed to load PDF file.");
        return;
        }

    // Load the following XML:
    // 
    // <?xml version="1.0" encoding="utf-8" ?>
    // <something>
    //     <xyz>
    //         <abc123>A base64 encoded PDF file will be inserted under this node.</abc123>
    //     </xyz>
    // </something>

    CkXml xml = new CkXml();
    success = xml.LoadXmlFile("qa_data/xml/xmlToContainPdf.xml");
    if (success != true) {
        System.out.println("Failed to load XML file.");
        return;
        }

    // Insert the PDF into the XML.
    xml.NewChild2("xyz|pdfData",bd.getEncoded("base64"));

    // Show the new XML:
    System.out.println(xml.getXml());

    // The XML now looks like this:
    // <?xml version="1.0" encoding="utf-8" ?>
    // <something>
    //     <xyz>
    //         <abc123>A base64 encoded PDF file will be inserted under this node.</abc123>
    //         <pdfData>JVBERi0xL ... UlRU9GCg==</pdfData>
    //     </xyz>
    // </something>

    // To extract the PDF data out and restore the PDF file:
    CkBinData bd2 = new CkBinData();
    success = bd2.AppendEncoded(xml.getChildContent("xyz|pdfData"),"base64");
    success = bd2.WriteFile("qa_output/helloWorld.pdf");

    System.out.println("Success.");
  }
}