SimplRestExample.java

import javax.ws.rs.ApplicationPath;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Application;

import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;

@ApplicationPath("/greeting")
@Component(
	immediate = true, property = {"jaxrs.application=true"},
	service = Application.class
)
public class UsersRestService extends Application {

	@Override
	public Set<Object> getSingletons() {
		return Collections.singleton((Object)this);
	}

	@GET
	@Path("/helloworld")
	@Produces("text/plain")
	public String getHelloWorld() {
		return "{message:\"Hello world\"}";
	}
}