我有一个项目(EJB 3.0,打包为EAR),带有视图(JSF 2.0)和持久性(JPA 2.0,Hibernate)层.为了避免延迟初始化支持和其他问题,我尝试使用Seam 3.0.0.Final引入Seam Managed Persistence Context.
为此,我写了以下生产者类:
为此,我写了以下生产者类:
import javax.enterprise.context.ConversationScoped; import javax.enterprise.inject.Produces; import javax.persistence.EntityManagerFactory; import javax.persistence.PersistenceUnit; import org.jboss.seam.solder.core.ExtensionManaged; class PersistenceProvider { @ExtensionManaged @Produces @PersistenceUnit @ConversationScoped private EntityManagerFactory producerField; }
并将我的EntityManager字段上的@PersistenceContext注释更改为@Inject.
如果我现在尝试使用EntityManager,我将获得以下堆栈跟踪:
<WARNUNG: StandardWrapperValve[Faces Servlet]: PWC1406: Servlet.service() for servlet Faces Servlet threw exception javax.faces.el.EvaluationException: java.lang.RuntimeException: java.lang.RuntimeException: Could not find EntityManagerFactory bean with qualifiers[@javax.enterprise.inject.Any(),@javax.enterprise.inject.Default()] at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102) at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102) at javax.faces.component.UICommand.broadcast(UICommand.java:315) at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794) at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259) at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81) 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:409) at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1534) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281) 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 com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98) at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162) at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:326) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:227) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:170) at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:822) at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:719) at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1013) at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225) 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:662) Caused by: java.lang.RuntimeException: java.lang.RuntimeException: Could not find EntityManagerFactory bean with qualifiers[@javax.enterprise.inject.Any(),@javax.enterprise.inject.Default()] at org.jboss.seam.persistence.ManagedPersistenceContextBeanLifecycle.create(ManagedPersistenceContextBeanLifecycle.java:126) at org.jboss.seam.persistence.ManagedPersistenceContextBeanLifecycle.create(ManagedPersistenceContextBeanLifecycle.java:46) at org.jboss.seam.solder.bean.ImmutableBean.create(ImmutableBean.java:87) at org.jboss.weld.context.AbstractContext.get(AbstractContext.java:121) at org.jboss.weld.bean.proxy.ContextBeanInstance.getInstance(ContextBeanInstance.java:99) at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:124) at org.jboss.weld.proxies.SMPC-org$jboss$seam$persistence$ManagedPersistenceContextExtension-de$wintersolutions$fitnessbuddy$persistence$cdi$PersistenceProvider$producerField[@javax$enterprise$context$ConversationScoped()@javax$enterprise$inject$Produces()@javax$persistence$PersistenceUnit(name=,unitName=)@org$jboss$seam$solder$core$ExtensionManaged()]_$$_WeldClientProxy.persist(SMPC-org$jboss$seam$persistence$ManagedPersistenceContextExtension-de$wintersolutions$fitnessbuddy$persistence$cdi$PersistenceProvider$producerField[@javax$enterprise$context$ConversationScoped()@javax$enterprise$inject$Produces()@javax$persistence$PersistenceUnit(name=,unitName=)@org$jboss$seam$solder$core$ExtensionManaged()]_$$_WeldClientProxy.java) at de.wintersolutions.fitnessbuddy.view.controller.ExerciseController.saveExercise(ExerciseController.java:54) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at javax.el.BeanELResolver.invokeMethod(BeanELResolver.java:737) at javax.el.BeanELResolver.invoke(BeanELResolver.java:467) at javax.el.CompositeELResolver.invoke(CompositeELResolver.java:254) at com.sun.el.parser.AstValue.invoke(AstValue.java:228) at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:297) at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:43) at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:56) at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105) at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88) ... 33 more Caused by: java.lang.RuntimeException: Could not find EntityManagerFactory bean with qualifiers[@javax.enterprise.inject.Any(),@javax.enterprise.inject.Default()] at org.jboss.seam.persistence.ManagedPersistenceContextBeanLifecycle.getEntityManagerFactory(ManagedPersistenceContextBeanLifecycle.java:210) at org.jboss.seam.persistence.ManagedPersistenceContextBeanLifecycle.create(ManagedPersistenceContextBeanLifecycle.java:104) ... 53 more
调试Glassfish 3.1上的应用程序为我提供了以下见解
实体管理器是该类型的代理
entityManager SMPC-org$jboss$seam$persistence$ManagedPersistenceContextExtension-com$example$PersistenceProvider$producerField[@javax$enterprise$context$ConversationScoped()@javax$enterprise$inject$Produces()@javax$persistence$PersistenceUnit(name=,unitName=)@org$jboss$seam$solder$core$ExtensionManaged()]_$$_WeldClientProxy
生成器字段在方法范围org.jboss.seam.persistence.ManagedPersistenceContextBeanLifecycle.getEntityManagerFactory的BeanManager的Bean-Field中找不到,但是在注入到我的DAO中的BeanManager中.
我尝试了一些变体,比如限定生产者字段,尝试在视图层服务中注入实体管理器,并将我的持久性单元的unitName和/或名称添加到producer字段的@PersistenceUnit Annotation中.
我在这里做错了什么建议?
解决方法
似乎在EJB的MDB中没有活动的会话(或会话)范围时.
您需要手动激活一个.您可以通过使用以下messageHandler实现MDB来实现:
@Inject private BoundConversationContext boundConversationContext; public void onMessage(Message message) { BoundRequest boundRequest = null; try { boundRequest = new MutableBoundRequest(new HashMap<String,Object>(),new HashMap<String,Object>()); boundConversationContext.associate(boundRequest); if (!boundConversationContext.isActive()) boundConversationContext.activate(); // DO YOUR BUSInesS LOGIC HERE } finally { if (boundConversationContext != null) { if (boundRequest != null) boundConversationContext.dissociate(boundRequest); if (boundConversationContext.isActive()) { boundConversationContext.deactivate(); } } } }
当试图将MDB与接缝持久性集成时,这对我在Jboss 6 AS上起作用.
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