Autowiring a collection via the constructor with Spring

Question

I have what seems to be a simple problem, as stated in the title. Here is the kind of class I have :

public class Foo {
    @Autowired
    public Foo(@Qualifier(         


        

Answer 1

Autowiring collections is not possible using the @Autowired annotation. An autowired collection means "to provide all beans of a particular type". Using the JSR-250 @Resource annotation, you can declare that you want a resource injected by its name, not its type. Or you inject the dependency explicitly.

[...] beans which are themselves defined as a collection or map type cannot be injected via @Autowired since type matching is not properly applicable to them. Use @Resource for such beans, referring to the specific collection/map bean by unique name.

See the Spring documentation for more details.