java - Inject with Spring Boot depending on properties from application.yml -

in 1 of our common libraries our project need make distinction between 2 implementations of interface based on service using it.

i inject interface via constructor injection , need find out how can make sure implementation used based on value of property in our application.yml.

i looked @qualifier annotation seem need attribute in xml schema. don't have such thing.

in 1 part of our code read out properties our kafkalistener way

@kafkalistener(topics = "#{pathtoproperties.getprefix()}#ourbusinessproperties.getrelevantproperties()}"

can use same syntax in spring?

in 1 of our common libraries our project need make distinction between 2 implementations of interface based on service using it.

you can use profiles this.

let's have 2 profiles production , test.

then can annotate implementation want use in production this:

@profile("production") @component class productionimplementation implements myservice { }

and on component set different profile:

@profile("test") @component class testimplementation implements myservice { }

and start spring-boot application following argument:

-dspring.profiles.active=production

alternatively can select profile using environment variable:

spring_profiles_active = production

one more option create factory create different instance depending on environmental configuration:

@bean public myservice myservice() {   if (condition) return firstimplementation();   return secondimplementation(); }

Insert