Comment injecter de l'EntityManager en CDI (soudure)?

Dans mon projet , j'utilise JSF+JPA+CDI+WildFly 8.2 dans la couche de persistance. J'ai un BasicDao , comme ceci:

 public  class BasicDao<M, K> {
    private org.jboss.logging.Logger logger = org.jboss.logging.Logger
           .getLogger("BasicDao");

    @Inject
    @Primary
    protected EntityManager em;
    Class<M> mclass;

    public EntityManager getEm() {
        return em;
    }

    public void setEm(EntityManager em) {
        this.em = em;
    }

    @Transactional(value=TxType.NOT_SUPPORTED)
    public M find(K id){ 
        return em.find(mclass, id);
    }

    @Transactional(value=TxType.REQUIRED)
    public void insert(M inst){
        this.em.persist(inst);
    }

    @SuppressWarnings("unchecked")
    @Transactional(value=TxType.REQUIRED)
    public K insertWithAutoId(M inst){
        this.em.persist(inst);
        return (K) this.em.getEntityManagerFactory().getPersistenceUnitUtil().getIdentifier(inst);
    }

    @Transactional(value=TxType.REQUIRED)
    public M update(M updated){
        return this.em.merge(updated);
    }


    @Transactional(value=TxType.REQUIRED)
    public void delete(M nonUsed){
        this.em.remove(nonUsed);
    }
}

et les autres DAOs comme ceci :

@RequestScoped
public class UserDao extends BasicDao<User, Integer>{
@Transactional(value = TxType.NOT_SUPPORTED)
public User find(Integer id) {
return em.find(User.class, id);
}
@Transactional(value = TxType.REQUIRED)
public void insert(User inst) {
this.em.persist(inst);
}
@Transactional(value = TxType.REQUIRED)
public Integer insertWithAutoId(User inst) {
this.em.persist(inst);
return (Integer) this.em.getEntityManagerFactory()
.getPersistenceUnitUtil().getIdentifier(inst);
}
@Transactional(value = TxType.REQUIRED)
public User update(User updated) {
return this.em.merge(updated);
}
@Transactional(value = TxType.REQUIRED)
public void delete(User nonUsed) {
this.em.remove(nonUsed);
}
@SuppressWarnings("unchecked")
@Transactional(value = TxType.NOT_SUPPORTED)
public User findByName(String loginName) {
Query query = em.createQuery("select u from User u where u.loginName=:loginName");
List<User> users = (List<User>) query.setParameter("loginName",
loginName).getResultList();
return users.isEmpty() ? null : users.get(0);
}
}

Dans mon ManageredBean,le code aime ceci:

 @Inject
private UserDao userDao;

mais il jette souvent exception, pas toujours. J'étais très confus. La pile d'exception comme ceci:

09:50:59,945 FATAL [javax.enterprise.resource.webcontainer.jsf.context] (default task-27) JSF1073:在 RENDER_RESPONSE 6 的处理过程中捕捉到 com.sun.faces.mgbean.ManagedBeanCreationExceptionUIComponent-ClientId=,Message=对受管 bean resumeAudit 执行资源注入 (resource injection) 时发生错误  
09:50:59,946 FATAL [javax.enterprise.resource.webcontainer.jsf.context] (default task-27) 对受管 bean resumeAudit 执行资源注入 (resource injection) 时发生错误: com.sun.faces.mgbean.ManagedBeanCreationException: 对受管 bean resumeAudit 执行资源注入 (resource injection) 时发生错误  
at com.sun.faces.mgbean.BeanBuilder.invokePostConstruct(BeanBuilder.java:227) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:103) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:409) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:269) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at com.sun.faces.el.ManagedBeanELResolver.resolveBean(ManagedBeanELResolver.java:257) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:117) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at com.sun.el.parser.AstIdentifier.getValue(AstIdentifier.java:116) [javax.el-3.0.1-b05.jar:]  
at com.sun.el.parser.AstValue.getBase(AstValue.java:151) [javax.el-3.0.1-b05.jar:]  
at com.sun.el.parser.AstValue.getValue(AstValue.java:200) [javax.el-3.0.1-b05.jar:]  
at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:226) [javax.el-3.0.1-b05.jar:]  
at org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:50) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]  
at org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:50) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]  
at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]  
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]  
at javax.faces.component.UIOutput.getValue(UIOutput.java:174) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]  
at com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getValue(HtmlBasicInputRenderer.java:205) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.getCurrentValue(HtmlBasicRenderer.java:355) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at com.sun.faces.renderkit.html_basic.LabelRenderer.encodeBegin(LabelRenderer.java:120) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:864) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]  
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:302) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at com.sun.faces.renderkit.html_basic.GridRenderer.renderRow(GridRenderer.java:185) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at com.sun.faces.renderkit.html_basic.GridRenderer.encodeChildren(GridRenderer.java:129) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:889) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]  
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]  
at javax.faces.render.Renderer.encodeChildren(Renderer.java:176) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]  
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:889) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]  
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]  
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]  
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]  
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:456) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:133) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]  
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]  
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219) [jsf-impl-2.2.8-jbossorg-1.jar:]  
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647) [jboss-jsf-api_2.2_spec-2.2.8.jar:2.2.8]  
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:130) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]  
at com.wangyin.hzcrp.auth.AuthFilter.doFilter(AuthFilter.java:109) [classes:]  
at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:132) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:85) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]  
at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)  
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:56) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) [undertow-core-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:63) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58) [undertow-core-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76) [undertow-core-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final]  
at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)  
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) [undertow-core-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:261) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:247) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:76) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:166) [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:197) [undertow-core-1.1.0.Final.jar:1.1.0.Final]  
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:759) [undertow-core-1.1.0.Final.jar:1.1.0.Final]  
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_75]  
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_75]  
at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_75]  
Caused by: com.sun.faces.spi.InjectionProviderException: java.lang.IllegalStateException: JBAS011048: Failed to construct component instance  
at org.jboss.as.jsf.injection.JSFInjectionProvider.invokePostConstruct(JSFInjectionProvider.java:63) [wildfly-jsf-injection-8.2.0.Final.jar:8.2.0.Final]  
at com.sun.faces.mgbean.BeanBuilder.invokePostConstruct(BeanBuilder.java:221) [jsf-impl-2.2.8-jbossorg-1.jar:]  
... 70 more  
Caused by: java.lang.IllegalStateException: JBAS011048: Failed to construct component instance  
at org.jboss.as.ee.component.BasicComponent.constructComponentInstance(BasicComponent.java:162)  
at org.jboss.as.ee.component.BasicComponent.constructComponentInstance(BasicComponent.java:133)  
at org.jboss.as.ee.component.BasicComponent.createInstance(BasicComponent.java:100)  
at org.jboss.as.ee.component.ComponentRegistry$ComponentManagedReferenceFactory.getReference(ComponentRegistry.java:171)  
at org.jboss.as.ee.component.ComponentRegistry.createInstance(ComponentRegistry.java:87)  
at org.jboss.as.web.common.WebInjectionContainer.newInstance(WebInjectionContainer.java:77)  
at org.jboss.as.jsf.injection.JSFInjectionProvider.invokePostConstruct(JSFInjectionProvider.java:61) [wildfly-jsf-injection-8.2.0.Final.jar:8.2.0.Final]  
... 71 more  
Caused by: org.jboss.weld.exceptions.WeldException: WELD-000049: Unable to invoke public void com.wangyin.hzcrp.controller.ResumeAudit.init() on com.wangyin.hzcrp.controller.[email protected]  
at org.jboss.weld.injection.producer.DefaultLifecycleCallbackInvoker.invokeMethods(DefaultLifecycleCallbackInvoker.java:100) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]  
at org.jboss.weld.injection.producer.DefaultLifecycleCallbackInvoker.postConstruct(DefaultLifecycleCallbackInvoker.java:81) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]  
at org.jboss.weld.injection.producer.BasicInjectionTarget.postConstruct(BasicInjectionTarget.java:126) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]  
at org.jboss.weld.injection.producer.BeanInjectionTarget.postConstruct(BeanInjectionTarget.java:70) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]  
at org.jboss.as.weld.deployment.processors.WeldComponentIntegrationProcessor$3.run(WeldComponentIntegrationProcessor.java:196) [wildfly-weld-8.2.0.Final.jar:8.2.0.Final]  
at org.jboss.as.weld.deployment.processors.WeldComponentIntegrationProcessor$AbstractInjectionTargetDelegatingInterceptor.processInvocation(WeldComponentIntegrationProcessor.java:260) [wildfly-weld-8.2.0.Final.jar:8.2.0.Final]  
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:309)  
at org.jboss.as.weld.injection.WeldInjectionInterceptor.processInvocation(WeldInjectionInterceptor.java:53) [wildfly-weld-8.2.0.Final.jar:8.2.0.Final]  
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:309)  
at org.jboss.as.ee.component.AroundConstructInterceptorFactory$1.processInvocation(AroundConstructInterceptorFactory.java:28)  
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:309)  
at org.jboss.as.weld.injection.WeldInterceptorInjectionInterceptor.processInvocation(WeldInterceptorInjectionInterceptor.java:56) [wildfly-weld-8.2.0.Final.jar:8.2.0.Final]  
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:309)  
at org.jboss.as.weld.injection.WeldInjectionContextInterceptor.processInvocation(WeldInjectionContextInterceptor.java:43) [wildfly-weld-8.2.0.Final.jar:8.2.0.Final]  
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:309)  
at org.jboss.as.ee.concurrent.ConcurrentContextInterceptor.processInvocation(ConcurrentContextInterceptor.java:45) [wildfly-ee-8.2.0.Final.jar:8.2.0.Final]  
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:309)  
at org.jboss.invocation.ContextClassLoaderInterceptor.processInvocation(ContextClassLoaderInterceptor.java:64)  
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:309)  
at org.jboss.invocation.InterceptorContext.run(InterceptorContext.java:326)  
at org.jboss.invocation.PrivilegedWithCombinerInterceptor.processInvocation(PrivilegedWithCombinerInterceptor.java:80)  
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:309)  
at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)  
at org.jboss.as.ee.component.BasicComponent.constructComponentInstance(BasicComponent.java:160)  
... 77 more  
Caused by: java.lang.reflect.InvocationTargetException  
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_75]  
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_75]  
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_75]  
at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_75]  
at org.jboss.weld.injection.producer.DefaultLifecycleCallbackInvoker.invokeMethods(DefaultLifecycleCallbackInvoker.java:98) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]  
... 100 more  
Caused by: java.lang.IllegalArgumentException: Can not set javax.persistence.EntityManager field com.wangyin.hzcrp.storage.dao.BasicDao.em to com.wangyin.hzcrp.storage.dao.ResumeDao$Proxy$_$$_WeldSubclass  
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:164) [rt.jar:1.7.0_75]  
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:168) [rt.jar:1.7.0_75]  
at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:55) [rt.jar:1.7.0_75]  
at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:75) [rt.jar:1.7.0_75]  
at java.lang.reflect.Field.set(Field.java:741) [rt.jar:1.7.0_75]  
at org.jboss.weld.injection.FieldInjectionPoint.inject(FieldInjectionPoint.java:94) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]  
at org.jboss.weld.util.Beans.injectBoundFields(Beans.java:370) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]  
at org.jboss.weld.util.Beans.injectFieldsAndInitializers(Beans.java:381) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]  
at org.jboss.weld.injection.producer.ResourceInjector$1.proceed(ResourceInjector.java:70) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]  
at org.jboss.weld.injection.InjectionContextImpl.run(InjectionContextImpl.java:48) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]  
at org.jboss.weld.injection.producer.ResourceInjector.inject(ResourceInjector.java:72) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]  
at org.jboss.weld.injection.producer.BasicInjectionTarget.inject(BasicInjectionTarget.java:121) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]  
at org.jboss.weld.bean.ManagedBean.create(ManagedBean.java:150) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]  
at org.jboss.weld.context.AbstractContext.get(AbstractContext.java:96) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]  
at org.jboss.weld.bean.proxy.ContextBeanInstance.getInstance(ContextBeanInstance.java:98) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]  
at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:78) [weld-core-impl-2.2.6.Final.jar:2014-10-03 10:05]  
at com.wangyin.hzcrp.storage.dao.ResumeDao$Proxy$_$$_WeldClientProxy.find(Unknown Source) [crp-storage-1.0.0-SNAPSHOT.jar:]  
at com.wangyin.hzcrp.controller.ResumeAudit.init(ResumeAudit.java:81) [classes:]  
... 105 more  

Quelqu'un peut m'aider ? Merci un million.

Vous devrez utiliser un CDI producteur de faire un EntityManager exemple disponible dans votre CDI géré les haricots. Voir ici et ici. Ne pas appeler EntityManager#close() sur un container-managed EntityManager (à l'aide de @Disposes). Sinon, le conteneur va jeter un java.lang.IllegalStateException par la spécification.
Merci de répondre. Voici mon prodecer, public class UtilResource { @Produces @Primary @PersistenceContext(unitName="primary") private EntityManager em; } j'ai fait comme vous avez dit, mais est aussi avaient envoyé exception. J'espère que vous pourrez m'aider, merci beaucoup.
Voir ici pour un exemple concret d'utilisation. L'Oracle exemple dans le commentaire précédent de la mine n'est pas plausible chose à faire - à l'aide d'un producteur dans un @Singleton bean peut exposer le EntityManager à de nombreux fils. Aussi, le conteneur n'est pas nécessaire à l'appui de toute autre portée que @Dependent (par défaut) lors de l'utilisation d'un producteur de champ. Aller pour un réalisateur méthode au lieu d'utiliser @RequestScoped comme mentionné dans cet exemple.
de cette façon? @ApplicationScoped public class UtilResource { @PersistenceContext(unitName="primary") private EntityManager entityManager; @Produces public EntityManager getEntityManager() { return entityManager; } public void closeEntityManager(@Disposes EntityManager em) { if (em != null && em.getTransaction().isActive()) { em.getTransaction().rollback(); } if (em != null && em.isOpen()) { em.close(); } } }
Je n'ai pas tester cet exemple moi-même, puisque je suis très concerné par un container-managed EntityManager dans les Ejb, mais il devrait fonctionner.

OriginalL'auteur SuperChia | 2015-07-13