I have a Java EE 6 CDI based application running on JBoss AS 7.1.1 which contains some Session Beans too.
#Stateless
public class OrderService {
#Inject
private Logger log;
#Inject
private EntityManager em;
. . . . .
}
Everything worked fine until I had to expose my SLSB as a SOAP Web Service. So I had to provide an interface and declare the Web service:
#Stateless
#Remote(OrderServiceItf.class)
#WebService
public class OrderService implements OrderServiceItf {
#Inject
private Logger log;
#Inject
private EntityManager em;
. . . . .
}
#WebService
public interface OrderServiceItf {
. . . .
}
Unfortunately once I deploy the application I get the following WELD exception whereever I use this Bean:
org.jboss.weld.exceptions.DeploymentException: WELD-001408 Unsatisfied dependencies for type [OrderService] with qualifiers [#Default] at injection point [[field] #Inject com.telco.service.SendMessageService.orderService]
public class SendMessageService implements Serializable {
#Inject
private Logger logger;
int money;
#Inject OrderService orderService;
}
Any help how can I sort out this issue ? Thanks a lot!
You can use #Typed(OrderService) and you should be good. This changes the metadata for that bean and instead of being of the interface type, CDI will recognize your EJB as the concrete type.
Related
After upgrading Quarkus from 1.6.1.Final to 2.5.Final the following #Inject fails inside javax.ws.rs.core.Application subclass:
#ApplicationScoped
public class MyBean {
public String foo() {
retun "bar";
}
}
#ApplicationPath("/")
public class MyApplication extends Application {
#Inject
MyBean myBean;
#Override
public Set<Class<?>> getClasses() {
myBean.foo(); // Causes NPE on Quarkus 2.5.Final, worked well with 1.6.1.Final
}
}
I tried with CDI.current().select(MyBean.class).get() but got Unable to locate CDIProvider.
Any other workaround I can try? Thanks.
#Inject in JAX-RS Application classes has been since disallowed. I was able to solve my issue (registering resource classes by config) using #IfBuildProperty annotation.
I have a testclass:
#RunWith(Arquillian.class)
public class ActionServiceTest {
#EJB
private ActionService actionService;
...
}
This works fine.
Now I created another File ActionBuilder which should also have the EJB injected (but has no #RunWith Annotation) and is called from the ActionServiceTest, e.g.
new ActionBuilder().foo()
.
public class ActionBuilder {
#EJB
ActionService actionService;
...
}
In this case actionService is null. Can you tell me why?
Looks like you're using new which will bypass any container injection.
I have a problem with injecting EJB inside of a REST service (using jersey on glassfish 3.2 server) and I'm puzzled.
I have an EJB interface declared as:
import javax.ejb.Local;
#Local
public interface TestServiceLocal {
public String getText();
}
and the class bean that implements it:
import javax.ejb.Local;
import javax.ejb.Stateless;
/**
* Session Bean implementation class TestService
*/
#Stateless
#Local(TestServiceLocal.class)
public class TestService implements Serializable, TestServiceLocal {
private static final long serialVersionUID = 1L;
/**
* Default constructor.
*/
public TestService() {
// TODO Auto-generated constructor stub
}
#Override
public String getText() {
return this.getClass().getName();
}
}
The REST service looks like:
#Path("/service")
#Stateless
public class TestRestService {
#EJB(beanName="TestService")
private TestServiceLocal testService;
public TestRestService () {
}
#GET
#Produces(MediaType.TEXT_PLAIN)
#Path("/events")
public String getText() {
return testService.getText();
}
}
The problem is that when the REST service is called the bean cannot be created:
SEVERE: EJB5070: Exception creating stateless session bean : [TestRestService]
WARNING: EJB5184:A system exception occurred during an invocation on EJB TestRestService, method: public java.lang.String TestRestService.getText()
WARNING: javax.ejb.EJBException: javax.ejb.EJBException: javax.ejb.CreateException: Could not create stateless EJB
at com.sun.ejb.containers.StatelessSessionContainer._getContext(StatelessSessionContainer.java:454)
at com.sun.ejb.containers.BaseContainer.getContext(BaseContainer.java:2547)
at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:1899)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:212)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88)
at com.sun.proxy.$Proxy839.getText(Unknown Source)
I had already took a look at the answers posted here but none of them seemed to work for me. Any help will be appreciated. Thank you!
PS: I forgot to mentioned (don't know if it's relevant). My project is created under eclipse Juno as Dynamic Web Project.
I am using Arquillian to inject the dependencies for my tests. It works OK if I inject the beans directly to my test class, but if the beans have dependencies of their own tht have to be injected, those dependencies do not get injected.
For example: the FacLptConfiguration bean gets imported correctly into my Test Class, but it does not get injected into the CfdFileCreator bean. I injected FacLptConfigurtion to the test class just to confirm that the injection works, but the user of this class is CfdFileCreator.
#RunWith(Arquillian.class)
public class CfdFileCreatorArquillianTest {
#Deployment
public static WebArchive createDepolyment() {
return ShrinkWrap.create(WebArchive.class)
.addClass(FacLptConfiguration.class)
.addClass(InterimFileCreator.class)
.addClass(CfdFileCreator.class)
.addAsManifestResource(EmptyAsset.INSTANCE, "beans.xml")
.addAsWebInfResource(new File("C:/aLearn/FacLpt/web/WEB-INF/env-entries.properties"));
}
public static String TEST_FOLDER = "C:/aLearn/FacLpt/src/test/testdata/pruebas/";
#Inject
private FacLptConfiguration facLptConfiguration;
#Inject
private CfdFileCreator cfdFileCreator;
#Test
public void createCfd() {
System.out.println("in createCFD");
cfdFileCreator.createCFDFile();
}
}
These injections are not working:
#Singleton
public class CfdFileCreator {
#Inject
private InterimFileCreator interimFileCreator;
#Inject
private FacLptConfiguration facLptConfiguration;
I think your problem is the location of the beans.xml. For a web archive it should be WEB-INF/beans.xml. Use:
addAsWebInfResource(EmptyAsset.INSTANCE, ArchivePaths.create("beans.xml"))
See also https://community.jboss.org/thread/175404
Here is my bean that is trying to inject a singleton bean InformationService :
#Path("/information/{name}")
#Stateless (name="InformationResource")
public class InformationResource {
#EJB
private InformationService appService;
#GET
#Produces(MediaType.APPLICATION_XML)
public Information getInfo(#PathParam("name") String name){
return appService.getMap().get(name);
}
#PUT
#POST
#Consumes(MediaType.APPLICATION_XML)
public Information putInfo(#PathParam("name") String name, Information info){
return appService.getMap().put(name,info);
}
#DELETE
public void deleteInfo(#PathParam("name") String name){
appService.getMap().remove(name);
}
}
This is the InformationService class
#Singleton
public class InformationService {
private Map<String,Information> map;
#PostConstruct
public void init(){
map = new HashMap<String,Information>();
map.put("daud", new Information("B.Tech","Lucknow"));
map.put("anuragh", new Information("M.Sc","Delhi"));
}
public Map<String,Information> getMap(){
return map;
}
}
Its part of a very simple JAX-RS implementation and I am deploying as war in JBoss 6.1 Final. The problem is that InformationService throwing a NullPointerException when I make the proper get request. If I initialize appService explicitly, everything works fine. Why is #EJB annotation not working ?
Are you using Jersey as REST implementation? If so, EJB injection is not supported out of the box.
This link provides more information on this and also a solution.
Check that your #Singleton is javax.ejb.Singleton.
Any other exceptions before NPE ?