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PONullPointerException on @EJB annotated bean
 

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  1. PONullPointerException on @EJB annotated bean
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    <p>I have a problem when I try Override the getAsObject function</p> <pre><code>@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; } } </code></pre> <p>SO when I load my combobox in every post back</p> <pre><code>&lt;p:selectOneMenu value="#{registerController.selectedCountry}" converter="countryConverter"&gt; &lt;f:selectItems value="#{registerController.countries}" var="country" itemLabel="#{country.name}" itemValue="#{country}" /&gt; &lt;/p:selectOneMenu&gt; </code></pre> <p>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.</p> <p><em>The error that I got is the follow, as I described in the getAsObject function line</em></p> <pre><code>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) </code></pre>
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    1. USAvinash Singh
    1. USDavid Agustin Almanza Gaitan
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    1. COAdd a setter for `CountryService countryService` attribute otherwise it cannot be injected.
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      1. USLuiggi Mendoza
    2. COI don't think setter method is required for EJB annotation .What kind of EJB is that ? If it is local and running within same app then it should work.Can you post your EJB with annotations you are using.
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      1. USAvinash Singh
    3. COLocal public interface CountryService extends dao<Country>{} Stateless public class CountryServiceImpl implements CountryService {} public interface CountryDao extends dao<Country> {} Stateless public class CountryDaoImpl implements CountryDao{} ======== Note "@" symbol is suppose to be before each EJB reserve word, but stack does not allow me cuze of his mention user syntax
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      1. USDavid Agustin Almanza Gaitan
 

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