Put together a simple project using springboot and gorm since the ones using GORM 6.0.x were not working for me.
Should be able to run with
$ gradle bootRun
The project bootstraps a couple entries so
$ curl localhost:8080/persons/
Should result in 3 entries. You can also add entries using a PUT command and retrieve by id
$ curl localhost:8080/persons/ -X PUT -d 'lastName=Fowler&firstName=Dexter
$ curl localhost:8080/persons/4/