Just when you think you are being clever, you find there is someone who has already been cleverer (is that a word?) than you!

I asked Mr Google about ColdFusion and EXIF and he told me about this: http://www.leavethatthingalone.com/blog/index.cfm/2006/5/16/Using-ColdFusion-to-Read-EXIF-Information-from-JPEGs

The same Java class was being used, but the really clever thing here is that you don't need to add that class to the lib dir/class paths in CF.

After reading this, and thinking how I plan to use my JpgMetadataReader.cfc, I have made to following changes:

- the init function now has the optional argument "JpegMetadataReader", which is "An instantiated object of com.drew.imaging.jpeg.JpegMetadataReader" (that's the hint) If you do not pass this in, it will attempt to create the java object, and if it is located in the lib/class path, you'll be fine :-)

- added the functions "getITPCKeys" and "setITPCKeys". These functions are used to define a comma delimited list of keys that MUST be returned in the result struct. The struct keys are inited with a value of "" (empty string) The default list is "Caption/Abstract,Keywords,Credit,Copyright Notice,Object Name" and is dirived from http://www.controlledvocabulary.com/imagedatabases/iptc_naa.html#IPTCchart

- added the optional argument "type" to "getMetaDataStruct". This will return only the type of meta data you specify. eg:

So, enough info, now for some code:

The only difference here from the initial code snippet is that I have provided the Java class "com.drew.imaging.jpeg.JpegMetadataReader" in the variable "MyJpegMetadataReaderJavaObject"

What is really cool about the JavaLoader is that you can load ANY java class!

Enjoy!