问题
Is it possible in a generic way (for all image types) to be able to read and write metadata in Java, i've found a few examples but they are always specific, for JPEG or PNG for example. I need something generic enough to not if else statement everywhere.
回答1:
I don't want to rewrite the source but here is an great example
http://johnbokma.com/java/obtaining-image-metadata.html
Look at the readandDisplayMetaData function and it will give you an idea.
回答2:
Every file format has a different way of storing metadata. Asking for a generic way to read and write metadata is like asking for a generic way to read and write all file formats.
来源：https://stackoverflow.com/questions/16895251/java-metadata-read-and-write