Injecting EJB via interface in Wildfly application

Question

I am using wildfly 10.1.0 and JavaEE 7

I've got this interface:

public interface TestEjb {
    String something();
}

and this Ejb class implementing it:

@LocalBean
@Stateless
public class TestEjbImpl implements TestEjb {

    @Override
    public String something() {
        return "Hello world";
    }
}

When I am injecting it to my @Path annotated jax-rs class using

@Inject
private TestEjb testEjb;

It gives an error saying "WELD-001408: Unsatisfied dependencies for type TestEjb with qualifiers @Default"

But when I inject it like

@Inject
private TestEjbImpl testEjb;

it works fine. And which is surprising both ways work with no problems in jboss-eap-6.4. But why?

Answer 1

First of all, you are mixing CDI injection with EJB injection. Rather use @EJB (instead of @Inject) when injecting your EJB.

@LocalBean has a no-interface view. So, you have an interface with no view annotation and a bean with a no-interface view annotation. The EJB Container understands it as a no interface view.

The best way will be to annotate the TestEjb interface with @Local view and remove the @LocalBean from the TestEjbImpl implementation in order for your solution to work.

Interface

@Local
public interface TestEjb {
    String something();
}

EJB

@Stateless
public class TestEjbImpl implements TestEjb {

    @Override
    public String something() {
        return "Hello world";
    }
}

Injection time

@EJB
private TestEjb testEjb;

I hope this helps.

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