ClassLoader.getResource("mypackageroot") fails against exploded module

[Alan Bateman]

On 03/02/2017 18:17, Juergen Hoeller wrote:

> Spring's classpath scanning works fine on JDK 9 for classpath resources
> (archives as well directories) and also for archives on the module path.
>
> However, it does not work for an exploded module layout, simply
> because ClassLoader.getResource("mypackageroot") always returns null in
> such a scenario.
>
> Since ClassLoader.getResource("mypackageroot") works in all other
> scenarios, including module jars on the module path, I wonder whether this
> is accidental?
Sadly, resource names have always been poorly specified. It's very much 
implementation and class loader specific as to whether you could get a 
URL to a "directory" like this. However, you are right that there is an 
inconsistency between exploded and packages modules that we should sort out.

-Alan.