TopicResolver uses map<CLass<*>, topicname>. Failure with spring-devtools

[fkurth]

The DefaultTopicResolver uses a Map with Class<*> as key.

This fails if the project uses multiple classloaders, because Class<> has no equal implementation, every classloader creates a different "version" of the class.

For example, register custom mappings and add spring-devtools to the project.
This brings in a "RestartableClassLoader".
Other instrumentations might lead to similar problems.

The TopicResolver will fail for the custom mappings.

https://docs.spring.io/spring-boot/reference/using/devtools.html#using.devtools.restart.disable
https://stackoverflow.com/questions/2625546/is-using-the-class-instance-as-a-map-key-a-best-practice

Version 1.2.4

[onobc]

Hi @fkurth , thanks for the report. We will take a look.