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    <p>The two key ideas are first to write a bit of Java code to create the relevant image and then to design the report to reference this code appropriately. Perhaps the simplest way to generate the image is in a scriptlet like this:</p> <pre><code>package com.jaspersoft.alliances.mdahlman; import com.google.zxing.BarcodeFormat; import com.google.zxing.WriterException; import com.google.zxing.common.BitMatrix; import com.google.zxing.qrcode.QRCodeWriter; import com.google.zxing.client.j2se.MatrixToImageWriter; import net.sf.jasperreports.engine.JRDefaultScriptlet; import net.sf.jasperreports.engine.JRScriptletException; public class QRCodeScriptlet extends JRDefaultScriptlet { public void afterDetailEval() throws JRScriptletException { QRCodeWriter writer = new QRCodeWriter(); BitMatrix matrix = null; try { matrix = writer.encode(getFieldValue("barcode_text").toString(), BarcodeFormat.QR_CODE, 256, 256); this.setVariableValue("BarCodeImage", MatrixToImageWriter.toBufferedImage(matrix) ); } catch (WriterException e) { e.printStackTrace(); } } } </code></pre> <p>That's full of hard-coded ugliness, but the key ideas are all shown. Then you need to define the report like this:</p> <ol> <li>Sample query: <code>select 'some text' as barcode_text</code> I included this only to reinforce the point that my scriptlet hard-codes the field name <code>barcode_text</code>. (This is bad.)</li> <li>Variable: <code>BarCodeImage</code> of type <code>java.awt.image.BufferedImage</code> with calculation <code>System</code>. This name is hard-coded in the scriptlet too. (This is equally bad.)</li> <li>Add to iReport's classpath: <ul> <li>The compiled scriptlet .jar file</li> <li>core.jar (from ZXing)</li> <li>javase.jar (from ZXing)</li> </ul></li> <li>Add an Image element to the report with Expression <code>$V{BarCodeImage}</code>.</li> </ol> <p>The result is a happy happy QR-code in your generated JasperReport:</p> <p><img src="https://i.stack.imgur.com/zDHcr.png" alt="Generated QR-Code"></p> <p>I recall a sample that I have seen which does things much more cleanly. It actually included a nice plug-in so you could easily install this functionality into iReport with minimal effort. If I can track that down, then I'll update this post. But until then this at least covers all of the critical points.</p>
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