问题
Is there any way with pure ColdFusion/cfscript to produce a QR code, without relying on external APIs or JavaScript?
回答1:
No. ColdFusion cannot generate bar codes by itself. You need a separate tool or library. It is easy enough to install a java library, like ZXing. Then generate the images from CF. Alternately, you could do a <cfhttp> call to an external server that generates the bar code image for you, or basically do the same thing with javascript. You would not need to install anything for the latter two (2) options. But they still rely on an external resource.
Bottom line you need something more than just ColdFusion. What is the reason you cannot use either an external API or javascript? Because without either of those, you are probably out of luck.
Edit based on comments:
If the only restriction is the images must generated locally, then you can use ZXing as described in the link above -OR- any of the other components/libraries mentioned in the other responses, like Joe's suggestion which uses iText (though also based on ZXing).
回答2:
Some other external APIs
http://cfbarbecue.riaforge.org/
http://zanstra.com/my/Barcode.html?barcode=3PTSP8827A231
回答3:
If you really wanted to, you could look up (perhaps you need to buy?) the encoding standard for QR codes, which I believe is an ISO standard. Then you could write a program which would output a table with the appropriate number of rows and columns, each with either a black or a white background. I wouldn't recommend this form of "rolling your own" though; it's a lot of work to do essentially what's been done before.
回答4:
Tim Cunningham wrote a library that is hosted on Github that utilizes iText that does just this very thing. https://github.com/boltz/QRToad
来源：https://stackoverflow.com/questions/10058780/creating-qr-codes-with-coldfusion