CDI在JAX-RS类上注入pojo会引发异常

Question

我有一个名为MyService.java的简单POJO类：

@RequestScoped
public class MyService {   
    public String helloWorld(){
        return "hello world!";
    }
}

我有一个JAX-RS类，我想用CDI注入我的POJ：

@Path("service")
public class RestfulService {
    public static AtomicInteger counter = new AtomicInteger(0);
    @EJB
    MyEJB ejb;// The EJb injection works!
    @Inject 
    MyService service; // CDI injection does NOT work!

    @GET
    @Path("counter")
    @Produces(MediaType.TEXT_PLAIN)
    public String getTotal() {
        return  "Number of hits: " + counter.incrementAndGet();       
    }
}

以下是抛出的异常：

g.glassfish.hk2.api.UnsatisfiedDependencyException: There was no object available for injection at SystemInjecteeImpl(requiredType=MyService,parent=RestfulService,qualifiers={},position=-1,optional=false,self=false,unqualified=null,1492861225)
    at org.jvnet.hk2.internal.ThreeThirtyResolver.resolve(ThreeThirtyResolver.java:74)

文件beans.xml存在且发现模式设置为annotated。

请帮忙吗？对我来说似乎是一个基本的例子。