Oliver Drotbohm opened SPR-11296 and commented

@ConditionalOnMissingBean and @ConditionalOnClass allow to selectively register bean definitions in case a different bean definition is already registered or a type being present on the classpath.

This is really useful to ecosystem projects to be able to pick up user configuration or fall back to defaults otherwise without necessarily creating a dependency on Spring Boot (which might cause a cyclic dependency if boot provides additional defaulting).

Issue Links:

• Port @ConditionalOn... from Spring Boot into Spring Core [SPR-10964] #15592 Port @ConditionalOn... from Spring Boot into Spring Core

5 votes, 7 watchers