NullPointerException on #EJB annotated bean - jsf

Question

I have a problem when I try Override the getAsObject function
#FacesConverter("countryConverter")
public class CountryConverter implements Converter {
#EJB private CountryService countryService;
#Override
public Object getAsObject(FacesContext context, UIComponent arg1, String arg2){
Country country = countryService.findByName(arg2);
return country;
}
}
SO when I load my combobox in every post back
<p:selectOneMenu value="#{registerController.selectedCountry}"
converter="countryConverter">
<f:selectItems value="#{registerController.countries}" var="country"
itemLabel="#{country.name}" itemValue="#{country}" />
</p:selectOneMenu>
I got a nullPointer Exception in the findbyName line!, I check the arg2 paramater and it carrys a valid value, Also I test the service function and also it works fine... Outside the CountryConverter class.
The error that I got is the follow, as I described in the getAsObject function line
SEVERE: java.lang.NullPointerException
at com.garagesalelive.controllers.converter.CountryConverter.getAsObject(CountryConverter.java:29)
at com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getConvertedValue(HtmlBasicInputRenderer.java:171)
at com.sun.faces.renderkit.html_basic.MenuRenderer.convertSelectOneValue(MenuRenderer.java:202)
at com.sun.faces.renderkit.html_basic.MenuRenderer.getConvertedValue(MenuRenderer.java:319)
at org.primefaces.component.selectonemenu.SelectOneMenuRenderer.getConvertedValue(SelectOneMenuRenderer.java:58)
at javax.faces.component.UIInput.getConvertedValue(UIInput.java:1030)
at javax.faces.component.UIInput.validate(UIInput.java:960)
at javax.faces.component.UIInput.executeValidate(UIInput.java:1233)
at javax.faces.component.UIInput.processValidators(UIInput.java:698)
at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214)
at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214)
at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214)
at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214)
at org.primefaces.component.dialog.Dialog.processValidators(Dialog.java:378)
at javax.faces.component.UIForm.processValidators(UIForm.java:253)
at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214)
at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214)
at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:1172)
at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1542)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:849)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:746)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1045)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:228)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:722)
SEVERE: at com.garagesalelive.controllers.converter.CountryConverter.getAsObject(CountryConverter.java:29)
SEVERE: at com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getConvertedValue(HtmlBasicInputRenderer.java:171)
SEVERE: at com.sun.faces.renderkit.html_basic.MenuRenderer.convertSelectOneValue(MenuRenderer.java:202)
SEVERE: at com.sun.faces.renderkit.html_basic.MenuRenderer.getConvertedValue(MenuRenderer.java:319)
SEVERE: at org.primefaces.component.selectonemenu.SelectOneMenuRenderer.getConvertedValue(SelectOneMenuRenderer.java:58)
SEVERE: at javax.faces.component.UIInput.getConvertedValue(UIInput.java:1030)
SEVERE: at javax.faces.component.UIInput.validate(UIInput.java:960)
SEVERE: at javax.faces.component.UIInput.executeValidate(UIInput.java:1233)
SEVERE: at javax.faces.component.UIInput.processValidators(UIInput.java:698)
SEVERE: at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214)
SEVERE: at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214)
SEVERE: at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214)
SEVERE: at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214)
SEVERE: at org.primefaces.component.dialog.Dialog.processValidators(Dialog.java:378)
SEVERE: at javax.faces.component.UIForm.processValidators(UIForm.java:253)
SEVERE: at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214)
SEVERE: at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1214)
SEVERE: at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:1172)
SEVERE: at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76)
SEVERE: at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
SEVERE: at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
SEVERE: at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
SEVERE: at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1542)
SEVERE: at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
SEVERE: at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
SEVERE: at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)
SEVERE: at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
SEVERE: at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
SEVERE: at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
SEVERE: at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
SEVERE: at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
SEVERE: at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
SEVERE: at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
SEVERE: at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
SEVERE: at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
SEVERE: at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
SEVERE: at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
SEVERE: at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:849)
SEVERE: at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:746)
SEVERE: at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1045)
SEVERE: at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:228)
SEVERE: at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
SEVERE: at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
SEVERE: at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
SEVERE: at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
SEVERE: at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
SEVERE: at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
SEVERE: at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
SEVERE: at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
SEVERE: at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
SEVERE: at java.lang.Thread.run(Thread.java:722)

Answer 1

I think your countryService is null. May be it is an injection problem.
Try this
#ManagedBean
#RequestScoped
#FacesConverter("countryConverter")
public class CountryConverter implements Converter {...

Answer 2

#EJB will not work on beans not managed by container. As per my understanding it works only with JSF Managed Beans , other EJB's and servlets.
If you are also using CDI library then you can try ,
#Inject private CountryService countryService;
or otherwise do a lookup,
InitialContext ctx = new InitialContext();
CountryService countryService =
(CountryService)ctx.lookup("ejb/countryService");
Your JNDI name will depend on your container or will be value of mappedBy attribute in your EJB if that is supported by your container and is specified by you on EJB.

Answer 3

by calling ManagedBean through FacesContext:
context.getApplication().getELResolver().getValue(context.getELContext(), null, "nameOfManagedBean");