java - CDIが機能しないのはなぜですか?

Question

次の休憩サービスがあります。

@ApplicationPath("geo")
@Path("weather")
public class MainResource extends Application {

    @Inject
    private MainDep dep;

    @GET
    public String printGotIt() {
        return "Got it!";
    }

    @GET
    @Path("propaganda")
    public String printPropaganda() {
        return dep.printPropaganda();
    }
}

MainDep 依存コード:

public class MainDep {
    public String printPropaganda() {
        return "Interesting enterprise";
    }
}

次の URL でリソースを使用しようとすると、host:port/root/geo/weather GlassFish が javax.servlet.ServletException をスローしました。

type Exception report

messageInternal Server Error

descriptionThe server encountered an internal error that prevented it from fulfilling this request.
exception
`javax.servlet.ServletException: Servlet.init() for servlet com.app.weather.rs.MainResource threw exception
root cause`
A MultiException has 1 exceptions.  They are:
    1. org.glassfish.hk2.api.UnsatisfiedDependencyException: There was no object available for injection at Injectee(requiredType=MainDep,parent=MainResource,qualifiers={}),position=-1,optional=false,self=false,unqualified=null,22064320)
    root cause
    org.glassfish.hk2.api.UnsatisfiedDependencyException: There was no object available for injection at Injectee(requiredType=MainDep,parent=MainResource,qualifiers={}),position=-1,optional=false

Answer 1

@RequestScopedクラスに追加する必要があります。