TomEE + EclipseLink :L'injection d'EntityManager ne fonctionne pas
https://stackoverflow.com//questions/10693905
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12-12-2019 - |
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J'essaie d'obtenir ça Exemple JPA + EJB + Facelets exécuté dans le profil Web TomEE.Étant donné que l'exemple utilise EclipseLink, j'ai téléchargé EclipseLink et copié eclipselink/jlib/eclipselink.jar dans le TomEE/lib annuaire.
Question 1: Est-ce le seul fichier que je dois copier ?
J'en ai un certain nombre Entity classes, un JSF SessionScoped ManagedBean pour répondre aux requêtes Web, un EJB avec état pour gérer les requêtes de base de données et un autre EJB qui charge les données dans la base de données au démarrage.
Les extraits de code des EJB ManagedBean et Stateful sont ci-dessous :
@Singleton
@Startup
public class ConfigBean {
@EJB
private RequestBean request;
@PostConstruct
public void createData() {
request.createPart("1234-5678-01", 1, "ABC PART", new java.util.Date(),
"PARTQWERTYUIOPASXDCFVGBHNJMKL", null);
// more code here...
}
}
@Stateful
public class RequestBean {
private static Logger logger = Logger.getLogger("order.ejb.RequestBean");
@PersistenceContext
private EntityManager em;
public void createPart(String partNumber, int revision, String description,
java.util.Date revisionDate, String specification,
Serializable drawing) {
try {
Part part = new Part(partNumber, revision, description,
revisionDate, specification, drawing);
em.persist(part); // <--- EXCEPTION THROWN HERE
} catch (Exception ex) {
throw new EJBException(ex.getMessage());
}
}
}
Quand la ligne em.persist(part); dans RequestBean tente de s'exécuter, j'obtiens l'exception suivante :
WARNING: Injection: No such property 'order.ejb.RequestBean/em' in class order.ejb.RequestBean
May 22, 2012 12:38:39 AM org.apache.openejb.core.transaction.EjbTransactionUtil handleSystemException
SEVERE: The bean instance business method encountered a system exception: The transaction has been marked rollback only because the bean encountered a non-application exception :javax.ejb.EJBException : null
javax.ejb.EJBTransactionRolledbackException: The transaction has been marked rollback only because the bean encountered a non-application exception :javax.ejb.EJBException : null
at org.apache.openejb.core.ivm.BaseEjbProxyHandler.convertException(BaseEjbProxyHandler.java:350)
at org.apache.openejb.core.ivm.BaseEjbProxyHandler.invoke(BaseEjbProxyHandler.java:288)
at order.ejb.RequestBean$LocalBeanProxy.createPart(order/ejb/RequestBean.java)
at order.ejb.ConfigBean.createData(ConfigBean.java:35)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:181)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext$LifecycleInvocation.invoke(ReflectionInvocationContext.java:213)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:163)
at org.apache.openejb.monitoring.StatsInterceptor.record(StatsInterceptor.java:176)
at org.apache.openejb.monitoring.StatsInterceptor.PostConstruct(StatsInterceptor.java:104)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:181)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:163)
at org.apache.openejb.core.interceptor.InterceptorStack.invoke(InterceptorStack.java:138)
at org.apache.openejb.BeanContext.newInstance(BeanContext.java:1368)
at org.apache.openejb.core.singleton.SingletonInstanceManager.createInstance(SingletonInstanceManager.java:174)
at org.apache.openejb.core.singleton.SingletonInstanceManager.access$100(SingletonInstanceManager.java:66)
at org.apache.openejb.core.singleton.SingletonInstanceManager$1.call(SingletonInstanceManager.java:115)
at org.apache.openejb.core.singleton.SingletonInstanceManager$1.call(SingletonInstanceManager.java:113)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at org.apache.openejb.core.singleton.SingletonInstanceManager.getInstance(SingletonInstanceManager.java:124)
at org.apache.openejb.core.singleton.SingletonInstanceManager.initialize(SingletonInstanceManager.java:90)
at org.apache.openejb.core.singleton.SingletonInstanceManager.start(SingletonInstanceManager.java:81)
at org.apache.openejb.core.singleton.SingletonContainer.start(SingletonContainer.java:118)
at org.apache.openejb.assembler.classic.Assembler.createApplication(Assembler.java:795)
at org.apache.openejb.assembler.classic.Assembler.createApplication(Assembler.java:506)
at org.apache.tomee.catalina.TomcatWebAppBuilder.startInternal(TomcatWebAppBuilder.java:634)
at org.apache.tomee.catalina.TomcatWebAppBuilder.configureStart(TomcatWebAppBuilder.java:588)
at org.apache.tomee.catalina.GlobalListenerSupport.lifecycleEvent(GlobalListenerSupport.java:117)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5161)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1566)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1556)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Caused by: javax.ejb.EJBException
at order.ejb.RequestBean.createPart(RequestBean.java:59)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:181)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:163)
at org.apache.openejb.monitoring.StatsInterceptor.record(StatsInterceptor.java:176)
at org.apache.openejb.monitoring.StatsInterceptor.invoke(StatsInterceptor.java:95)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:181)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:163)
at org.apache.openejb.cdi.CdiInterceptor.invoke(CdiInterceptor.java:129)
at org.apache.openejb.cdi.CdiInterceptor.access$000(CdiInterceptor.java:45)
at org.apache.openejb.cdi.CdiInterceptor$1.call(CdiInterceptor.java:66)
at org.apache.openejb.cdi.CdiInterceptor.aroundInvoke(CdiInterceptor.java:72)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext$Invocation.invoke(ReflectionInvocationContext.java:181)
at org.apache.openejb.core.interceptor.ReflectionInvocationContext.proceed(ReflectionInvocationContext.java:163)
at org.apache.openejb.core.interceptor.InterceptorStack.invoke(InterceptorStack.java:138)
at org.apache.openejb.core.stateful.StatefulContainer.businessMethod(StatefulContainer.java:648)
at org.apache.openejb.core.stateful.StatefulContainer.invoke(StatefulContainer.java:353)
at org.apache.openejb.core.ivm.EjbObjectProxyHandler.synchronizedBusinessMethod(EjbObjectProxyHandler.java:260)
at org.apache.openejb.core.ivm.EjbObjectProxyHandler.businessMethod(EjbObjectProxyHandler.java:240)
at org.apache.openejb.core.ivm.EjbObjectProxyHandler._invoke(EjbObjectProxyHandler.java:91)
at org.apache.openejb.core.ivm.BaseEjbProxyHandler.invoke(BaseEjbProxyHandler.java:284)
... 45 more
Comme je ne connais pas très bien la magie de Java EE, je n'ai presque aucune idée de ce qui ne va pas ici, mais j'aimerais savoir ce qui cause la première ligne de la trace de la pile ci-dessus :
WARNING: Injection: No such property 'order.ejb.RequestBean/em' in class order.ejb.RequestBean
Question 2: Pour une raison quelconque, l'injection d'Entity Manager ne semble pas fonctionner.Quelqu'un a une idée de pourquoi ?
Pour être complet, voici mon persistence.xml, qui est dans le project/src/main/webapp/classes/META-INF/ annuaire:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="order" transaction-type="JTA">
<jta-data-source>jdbc/__default</jta-data-source>
<properties>
<property name="eclipselink.ddl-generation" value="drop-and-create-tables" />
<property name="eclipselink.ddl-generation.output-mode"
value="both" />
</properties>
</persistence-unit>
</persistence>
Code source
Au cas où quelqu'un voudrait voir la structure des répertoires, le code source, les fichiers de configuration, etc.du projet, je l'ai téléchargé sur github ici.
La solution
Mis à jour persistence.xml utiliser OpenJPA, selon Propriétés communes de PersistenceProvider:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="order" transaction-type="JTA">
<jta-data-source>jdbc/__default</jta-data-source>
<properties>
<property name="openjpa.jdbc.SynchronizeMappings"
value="buildSchema(foreignKeys=true,schemaAction='dropDB,add')" />
<property name="openjpa.jdbc.SchemaFactory" value="native(foreignKeys=true)" />
<property name="openjpa.jdbc.MappingDefaults"
value="ForeignKeyDeleteAction=restrict, JoinForeignKeyDeleteAction=restrict" />
<property name="openjpa.Log" value="DefaultLevel=TRACE,SQL=TRACE" />
</properties>
</persistence-unit>
</persistence>
J'ai toujours l'exception suivante :
INFO - Starting OpenJPA 2.2.0
java.lang.NullPointerException
at order.web.OrderManager.getOrders(OrderManager.java:53)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at javax.el.BeanELResolver.getValue(BeanELResolver.java:64)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:58)
at org.apache.myfaces.el.unified.resolver.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:169)
at org.apache.el.parser.AstValue.getValue(AstValue.java:169)
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:189)
at org.apache.myfaces.view.facelets.el.ContextAwareTagValueExpression.getValue(ContextAwareTagValueExpression.java:96)
at javax.faces.component._DeltaStateHelper.eval(_DeltaStateHelper.java:246)
at javax.faces.component.UIData.getValue(UIData.java:2031)
at javax.faces.component.UIData.createDataModel(UIData.java:1979)
at javax.faces.component.UIData.getDataModel(UIData.java:1956)
at javax.faces.component.UIData.getRowCount(UIData.java:478)
at org.apache.myfaces.shared.renderkit.html.HtmlTableRendererBase.encodeInnerHtml(HtmlTableRendererBase.java:366)
at org.apache.myfaces.shared.renderkit.html.HtmlTableRendererBase.encodeChildren(HtmlTableRendererBase.java:214)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:626)
at javax.faces.component.UIComponentBase.encodeAll(UIComponentBase.java:524)
at javax.faces.component.UIComponentBase.encodeAll(UIComponentBase.java:533)
at org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.renderView(FaceletViewDeclarationLanguage.java:1908)
at org.apache.myfaces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:285)
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:59)
at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:116)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:241)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:199)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.tomee.catalina.OpenEJBValve.invoke(OpenEJBValve.java:44)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Apparemment, c'est un bug connu dans TomEE 1.0.0 qui a été résolu dans le coffre, donc je téléchargé le dernier instantané bêta3
Maintenant, tout fonctionne bien.
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