Java EE NullPointerException with CDI and web service

Question

I am trying to implement a demo web service but I struggle with CDI. I want to inject FooFinder into FooBooker but I am getting null instead (there is a NullPointerException during the call of FooResponse as fooFinder is null).

I have an interface

@RequestScoped
@Named
public interface FooFinder {

    FooResponse getReply(String origin, String destination);
}

implemented like

@RequestScoped
@Named
public class MockedFoo implements FooFinder {

    @Override
    public FooResponse getReply(String origin, String destination) {
        String s = "SuperFoo";
        Double d = 123.45;
    return new FooResponse(origin, destination, s, d);
    }
}

within a web service

@WebService
public class FooBooker {
    @Inject
    FooFinder fooFinder;

    @WebMethod
    public FooResponse getReply(String origin, String destination) {
        return fooFinder.getReply(origin, destination);
    }

    public static void main(String[] argv) {
        Object implementor = new FooBooker();
        String address = "http://localhost:9000/FooBooker";
        Endpoint.publish(address, implementor);
    }
}

Answer 1

It turned out that there was a problem with CDI libraries setup. I am using IntelliJ IDEA and I have enabled CDI support in GlassFish configuration dialogue.

Injection however didn’t work until I added CDI support in Modules configuration.