Create QR Barcode with ColdFusion and Zxing

Too often I write “It was too easy with ColdFusion”, and it’s becoming a cliché now. Making a QR barcode with ColdFusion was extremely easy too, especially when someone else had already blogged about it. I had nothing to dig out, nothing to investigate and hadn’t had the need for countless cups of coffee. I wish everything worked like that.

This uses Google zxing java library. I put the necessary classes into a single jar file, and you can download the example below. It uses JavaLoader to load to the Java classes. But if you are happily floating on Railo, you know that you don’t have to use JavaLoader. Railo is Cool.

Railo Code (Without JavaLoader)

   1: <cfset corefile     = ExpandPath('core.jar')>

   2: <cfset BarcodeFormat    = createObject('java','com.google.zxing.BarcodeFormat',corefile)>

   3: <cfset QRCodeWriter    = createObject('java','com.google.zxing.qrcode.QRCodeWriter',corefile).init() />

   4: <cfset MatrixToImageWriter    = createObject('java','com.google.zxing.client.j2se.MatrixToImageWriter',corefile)>

   5: <cfset QRcode     = QRCodeWriter.encode( 'http://cflove.org', BarcodeFormat.QR_CODE, 100, 100 )>

   6: <cfset image     = ImageNew( MatrixToImageWriter.toBufferedImage( QRcode ) )/>

   7: <cfimage action="writeToBrowser" source="#image#" format="png">

Show/Hide Line Numbers . Full Screen . Plain

With JavaLoader

   1: <cfset paths    = arrayNew(1)>

   2: <cfset paths[1]    = expandPath("core.jar")>

   3: <cfset loader    = createObject("component", "javaloader.JavaLoader").init(paths)>

   4: <cfset BarcodeFormat    = loader.create('com.google.zxing.BarcodeFormat')>

   5: <cfset QRCodeWriter    = loader.create('com.google.zxing.qrcode.QRCodeWriter').init()>

   6: <cfset MatrixToImageWriter    = loader.create('com.google.zxing.client.j2se.MatrixToImageWriter')>

   7: <cfset QRcode     = QRCodeWriter.encode( 'http://cflove.org', BarcodeFormat.QR_CODE, 100, 100 )>

   8: <cfset image     = ImageNew( MatrixToImageWriter.toBufferedImage( QRcode ) )>

   9: <cfimage action="writeToBrowser" source="#image#" format="png">

Show/Hide Line Numbers . Full Screen . Plain

Download everything below.