How to retrieve Spring bean Object with generics - Java

Question

I'm working with Spring, and we are going to pass the ApplicationContext to a POJO as it is part of our strategy.

I have to retrieve beans this way:

context.getBean(MyService.class);

But we also have services that accept generics, and we want to do something like:

context.getBean(MyService<String>.class) //doesn't compile
//how can I get the class of MyService<String>??

How can I get the class of an object that is parametrized with generic arguments?

https://stackoverflow.com/questions/30374267/get-spring-bean-via-context-using-generic — BackSlash, Dec 17 '17 at 22:34
How would I get this bean with that answer? `ConsumerSettings` Could you please post it as an answer? — AFP_555, Dec 17 '17 at 22:40

score 0 · Accepted Answer · answered Apr 06 '18 at 20:57

Careful with type erasure if you want something like ParameterizedTypeReference<C>

String[] beanNames = applicationContext.getBeanNamesForType(ResolvableType.forType(new ParameterizedTypeReference<String>() {}));
if (beanNames.length > 0) {
    String bean = (String) applicationContext.getBean(beanNames[0]);
}

How to retrieve Spring bean Object with generics - Java

1 Answers1