Spring — inject 2 beans of same type

Question

I like constructor-based injection as it allows me to make injected fields final. I also like annotation driven injection as it simplifies my context.xml<

Answer 1

@Autowired is by-type (in this case); use @Qualifier to autowire by-name, following the example from spring docs:

public SomeClass(
    @Qualifier("bean1") OtherClass bean1, 
    @Qualifier("bean2") OtherClass bean2) {
    ...
}

Note: In contrast to @Autowired which is applicable to fields, constructors and multi-argument methods (allowing for narrowing through qualifier annotations at the parameter level), @Resource is only supported for fields and bean property setter methods with a single argument. As a consequence, stick with qualifiers if your injection target is a constructor or a multi-argument method.

(below that text is the full example)