Spring Boot recently added support for this in https://github.com/spring-projects/spring-boot/issues/36033, however IMO this is something very useful generally (and not only in Spring Boot based applications) and especially when working in environments without a traditional filesystem that are common these days. As such it could potentially be considered as a candidate for inclusion in Framework's support for handling resources.
Comment From: quaff
It looks like data URI
Comment From: snicoll
Thanks for the suggestion. We have discussed this with the Spring Boot team and they have more things they'd like to add around that feature. Adding it here only really makes sense if we support it by default and adding a default protocol resolver in the core framework can have side effects with regards to the prefix we choose.
All in all, we don't think it's the right time to consider including it here and this issue is no longer actionable. We can reconsider at a later time based on the community feedback.