SRVE0777E: Exception thrown by application class - rest

Question

I have a JEE rest app for consume and build web service. When I use url of app in ibm bluemix I have an error in local server webSphere and also in Bluemix:
SRVE0777E: Exception thrown by application class
'tn.hunterViews.services.OfferService.afficherOffer:31'
java.lang.NullPointerException:
at tn.hunterViews.services.OfferService.afficherOffer(OfferService.java:31)
at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-2)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.ibm.ws.jaxrs20.server.LibertyJaxRsServerFactoryBean.performInvocation(LibertyJaxRsServerFactoryBean.java:674)
at [internal classes]
OffersService.java
package tn.hunterViews.services;
import java.util.List;
import javax.ejb.EJB;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import tn.hunterViews.business.OfferBusiness;
import tn.hunterViews.business.OfferBusinessRemote;
import tn.hunterViews.domain.Offer;
#Path("/Offers")
public class OfferService {
#EJB
OfferBusinessRemote ofR;
#GET
#Path("")
#Produces(MediaType.APPLICATION_JSON)
public Response afficherOffer(){
return Response.status(Status.OK).entity(ofR.getOffer()).build();
}
}
offersBuissness.java
package tn.hunterViews.business;
import java.util.List;
import javax.ejb.Stateless;
import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.Entity;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.GenericType;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import tn.hunterViews.domain.Offer;
/**
* Session Bean implementation class OfferBusiness
*/
#Stateless
public class OfferBusiness implements OfferBusinessRemote {
#Override
public List<Offer> getOffer() {
Client cl = ClientBuilder.newClient();
WebTarget target = cl.target("https://pihunterviewsdotnet.mybluemix.net/api");
WebTarget off = target.path("offerApi");
List<Offer> offers = off.request(MediaType.APPLICATION_JSON).get(new GenericType<List<Offer>>(){}) ;
cl.close();
return offers;
}
#Override
public boolean createOffer(Offer offer) {
Client cl = ClientBuilder.newClient();
WebTarget target = cl.target("https://pihunterviewsdotnet.mybluemix.net/api");
WebTarget off = target.path("offerApi");
Response resp=target.request().post(Entity.entity(offer, MediaType.APPLICATION_JSON));
if(resp.getStatus()!=201)
return false;
return true;
}
#Override
public boolean updateOffer(int id, Offer offer) {
if (id+""!=null && id!=0 && offer.getId()!=0)
{
Client cl = ClientBuilder.newClient();
WebTarget target = cl.target("https://pihunterviewsdotnet.mybluemix.net/api/offerApi"+ id);
target.request().build("PUT", Entity.entity(offer, MediaType.APPLICATION_JSON))
.invoke();
return true;
}
return false;
}
#Override
public boolean deleteOffer(int id) {
if (id+""!=null && id!=0)
{
Client cl = ClientBuilder.newClient();
WebTarget target = cl.target("https://pihunterviewsdotnet.mybluemix.net/api/offerApi"+ id);
target.request().delete();
return true;}
return false;
}
#Override
public Offer findOfferById(int id) {
Client cl = ClientBuilder.newClient();
WebTarget baseUrl = cl.target("https://pihunterviewsdotnet.mybluemix.net/api/offerApi");
WebTarget getPostURL=baseUrl.path(""+id);
Response response = getPostURL.request(MediaType.APPLICATION_JSON).get();
Offer offer=response.readEntity(Offer.class);
response.close();
cl.close();
return offer;
}
}
Please help me with this problem. Thanks.

Answer 1

If the #EJB annotation cannot be resolved to an EJB, then you would
have received a failure when the server created an instance of the
class containing the #EJB annotation. Since that does not appear to be
happening for you, and instead the instance is created fine, just
without that field being set, then the server is not scanning your
class for annotations or you have the javax.ejb.EJB annotation class
packaged as part of your application.
I would recommend checking the following:
Make sure the javax.ejb.EJB class is not being packaged as part of your annotation
Check that the web.xml for your WAR module has a version > 2.4. WAR modules with a version of 2.4 (or earlier) will not be scanned for annotations.
Check that the web.xml does not contain the setting metadata-complete="true". This setting turns off annotation scanning.
Source: http://www.developersite.org/102-95523-websphere-liberty