Impossibile iniettare EntityManager in Weld & Seam 3

StackOverflow https://stackoverflow.com/questions/8359244

Domanda

Ho iniziato a cuciture 3 e salda. Ora sto lottando con la persistenza: l'EntityManager non viene iniettata.

FIST, ho creato un progetto Maven da zero (non generato). Questo progetto ha due sub-moduli:

  • Modello: contiene solo le entità
  • Web: contiene front-end (JSF) e fagioli (no EJB). Questo modulo dipende dal modulo modello.

Quindi nel modulo web, ho la mia persistenza.xml in src/main/resources/META-INF:

<?xml version="1.0" encoding="UTF-8"?>
    <!-- Persistence deployment descriptor for dev profile -->
<persistence 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"
             version="2.0">

    <persistence-unit name="allternative" transaction-type="JTA">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <jta-data-source>java:jboss/datasources/allternativeDS</jta-data-source>
        <properties>
            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
            <property name="hibernate.hbm2ddl.auto" value="update" />
            <property name="hibernate.show_sql" value="false" />
            <property name="hibernate.format_sql" value="true" />
            <property name="hibernate.transaction.manager_lookup_class"
                value="org.hibernate.transaction.JBossTransactionManagerLookup" />
            <property name="hibernate.connection.autocommit" value="true" />
        </properties>
    </persistence-unit>

</persistence>

Quindi ho l'applicazione di classe:

@Named
@ApplicationScoped
public class ApplicationInitializer {

    @Produces
    @PersistenceContext(unitName="allternative")
    @Dependent
    EntityManager entityManager;

    @Produces
    @PersistenceUnit(unitName="allternative")
    @Dependent
    EntityManagerFactory entityManagerFactory;

}

E la classe CurrentUser:

@Named("currentUser")
@SessionScoped
public class CurrentUser implements Serializable {

    private boolean isLogin = false;

    @Inject
    private EntityManager entityManager;

    @Inject
    private Logger log;

    private User user;

    public CurrentUser() {
        this.user = null;
    }

    public User getUser() {
        log.info("getting user");
        if(this.user == null) {
            log.info("user is null, getting default from db");
            this.user = entityManager.find(User.class, "thobens"); // <- strange exception here
//          log.info("took user "+user.getUsername());
        }
        return user;
    }

    public void setUser(User user) {
        this.user = user;
    }
}

Quando chiamo #{CurrentUser.user} ottengo la seguente strana eccezione:

16:57:04,768 SEVERE [javax.enterprise.resource.webcontainer.jsf.application] (http--127.0.0.1-8080-1) Error Rendering View[/index.xhtml]: javax.el.ELException: /index.xhtml: java.lang.RuntimeException: Can't find a deployment unit named allternative at deployment "web.war"
    at com.sun.faces.facelets.compiler.TextInstruction.write(TextInstruction.java:88) [jsf-impl-2.1.3-b02-jbossorg-2.jar:2.1.3-SNAPSHOT]
    at com.sun.faces.facelets.compiler.UIInstructions.encodeBegin(UIInstructions.java:82) [jsf-impl-2.1.3-b02-jbossorg-2.jar:2.1.3-SNAPSHOT]
    at com.sun.faces.facelets.compiler.UILeaf.encodeAll(UILeaf.java:183) [jsf-impl-2.1.3-b02-jbossorg-2.jar:2.1.3-SNAPSHOT]
    at org.richfaces.renderkit.RendererBase.renderChildren(RendererBase.java:278) [richfaces-components-ui-4.0.0.Final.jar:]
    at org.richfaces.renderkit.html.PanelRenderer.encodeEnd(PanelRenderer.java:181) [richfaces-components-ui-4.0.0.Final.jar:]
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:875) [jboss-jsf-api_2.1_spec-2.0.0.Beta1.jar:2.0.0.Beta1]
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1763) [jboss-jsf-api_2.1_spec-2.0.0.Beta1.jar:2.0.0.Beta1]
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1759) [jboss-jsf-api_2.1_spec-2.0.0.Beta1.jar:2.0.0.Beta1]
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1759) [jboss-jsf-api_2.1_spec-2.0.0.Beta1.jar:2.0.0.Beta1]
    at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:401) [jsf-impl-2.1.3-b02-jbossorg-2.jar:2.1.3-SNAPSHOT]
    at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131) [jsf-impl-2.1.3-b02-jbossorg-2.jar:2.1.3-SNAPSHOT]
    at com.ocpsoft.pretty.faces.application.PrettyViewHandler.renderView(PrettyViewHandler.java:163) [prettyfaces-jsf2-3.3.0.jar:]
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:288) [jboss-jsf-api_2.1_spec-2.0.0.Beta1.jar:2.0.0.Beta1]
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:288) [jboss-jsf-api_2.1_spec-2.0.0.Beta1.jar:2.0.0.Beta1]
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:288) [jboss-jsf-api_2.1_spec-2.0.0.Beta1.jar:2.0.0.Beta1]
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121) [jsf-impl-2.1.3-b02-jbossorg-2.jar:2.1.3-SNAPSHOT]
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) [jsf-impl-2.1.3-b02-jbossorg-2.jar:2.1.3-SNAPSHOT]
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) [jsf-impl-2.1.3-b02-jbossorg-2.jar:2.1.3-SNAPSHOT]
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594) [jboss-jsf-api_2.1_spec-2.0.0.Beta1.jar:2.0.0.Beta1]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.jboss.weld.servlet.ConversationPropagationFilter.doFilter(ConversationPropagationFilter.java:67) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at com.ocpsoft.pretty.PrettyFilter.doFilter(PrettyFilter.java:118) [prettyfaces-jsf2-3.3.0.jar:]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.jboss.solder.servlet.exception.CatchExceptionFilter.doFilter(CatchExceptionFilter.java:65) [solder-impl-3.1.0.Beta3.jar:]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.jboss.solder.servlet.event.ServletEventBridgeFilter.doFilter(ServletEventBridgeFilter.java:72) [solder-impl-3.1.0.Beta3.jar:]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:139) [jboss-as-web-7.0.2.Final.jar:7.0.2.Final]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:388) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.jboss.as.web.NamingValve.invoke(NamingValve.java:57) [jboss-as-web-7.0.2.Final.jar:7.0.2.Final]
    at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:49) [jboss-as-jpa-7.0.2.Final.jar:7.0.2.Final]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:154) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:362) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:667) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:952) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at java.lang.Thread.run(Thread.java:619) [:1.6.0_20]
Caused by: java.lang.RuntimeException: Can't find a deployment unit named allternative at deployment "web.war"
    at org.jboss.as.weld.services.bootstrap.WeldJpaInjectionServices.getScopedPUName(WeldJpaInjectionServices.java:94) [jboss-as-weld-7.0.2.Final.jar:7.0.2.Final]
    at org.jboss.as.weld.services.bootstrap.WeldJpaInjectionServices.resolvePersistenceContext(WeldJpaInjectionServices.java:59) [jboss-as-weld-7.0.2.Final.jar:7.0.2.Final]
    at org.jboss.weld.util.Beans.injectEEFields(Beans.java:784) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at org.jboss.weld.bean.ManagedBean$ManagedBeanInjectionTarget$1$1.proceed(ManagedBean.java:181) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at org.jboss.weld.injection.InjectionContextImpl.run(InjectionContextImpl.java:54) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at org.jboss.weld.bean.ManagedBean$ManagedBeanInjectionTarget$1.work(ManagedBean.java:176) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at org.jboss.weld.bean.ManagedBean$FixInjectionPoint.run(ManagedBean.java:142) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at org.jboss.weld.bean.ManagedBean$ManagedBeanInjectionTarget.inject(ManagedBean.java:170) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at org.jboss.weld.bean.ManagedBean.create(ManagedBean.java:339) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at org.jboss.weld.context.AbstractContext.get(AbstractContext.java:122) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:693) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at org.jboss.weld.bean.AbstractReceiverBean.getReceiver(AbstractReceiverBean.java:84) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at org.jboss.weld.bean.ProducerField$1.produce(ProducerField.java:134) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at org.jboss.weld.bean.AbstractProducerBean.create(AbstractProducerBean.java:361) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at org.jboss.weld.bean.builtin.ee.EEResourceProducerField.createUnderlying(EEResourceProducerField.java:170) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at org.jboss.weld.bean.builtin.ee.EEResourceProducerField.access$000(EEResourceProducerField.java:54) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at org.jboss.weld.bean.builtin.ee.EEResourceProducerField$EEResourceCallable.call(EEResourceProducerField.java:80) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at org.jboss.weld.bean.builtin.CallableMethodHandler.invoke(CallableMethodHandler.java:50) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at org.jboss.weld.bean.proxy.EnterpriseTargetBeanInstance.invoke(EnterpriseTargetBeanInstance.java:62) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:125) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at org.jboss.weldx.persistence.EntityManager$-1772293428$Proxy$_$$_Weld$Proxy$.find(EntityManager$-1772293428$Proxy$_$$_Weld$Proxy$.java) [weld-core-1.1.2.Final.jar:]
    at com.allternative.web.security.CurrentUser.getUser(CurrentUser.java:42) [classes:]
    at com.allternative.web.security.CurrentUser$Proxy$_$$_WeldClientProxy.getUser(CurrentUser$Proxy$_$$_WeldClientProxy.java) [classes:]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [:1.6.0_20]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [:1.6.0_20]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [:1.6.0_20]
    at java.lang.reflect.Method.invoke(Method.java:597) [:1.6.0_20]
    at javax.el.BeanELResolver.getValue(BeanELResolver.java:302) [jboss-el-api_2.2_spec-1.0.0.Final.jar:1.0.0.Final]
    at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176) [jsf-impl-2.1.3-b02-jbossorg-2.jar:2.1.3-SNAPSHOT]
    at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203) [jsf-impl-2.1.3-b02-jbossorg-2.jar:2.1.3-SNAPSHOT]
    at org.apache.el.parser.AstValue.getValue(AstValue.java:134) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:187) [jbossweb-7.0.1.Final.jar:7.0.2.Final]
    at org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:55) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
    at com.sun.faces.facelets.el.ELText$ELTextVariable.writeText(ELText.java:224) [jsf-impl-2.1.3-b02-jbossorg-2.jar:2.1.3-SNAPSHOT]
    at com.sun.faces.facelets.el.ELText$ELTextComposite.writeText(ELText.java:148) [jsf-impl-2.1.3-b02-jbossorg-2.jar:2.1.3-SNAPSHOT]
    at com.sun.faces.facelets.compiler.TextInstruction.write(TextInstruction.java:85) [jsf-impl-2.1.3-b02-jbossorg-2.jar:2.1.3-SNAPSHOT]
    ... 46 more

Questo si verifica non appena tocco entityManager. Quando lo annoto con @PersistenceContext invece di @Inject Questo errore si verifica già durante la distribuzione.

Immagino che abbia qualcosa a che fare con la persistenza.xml non elaborato, perché

a) Quando chiamo Persistence.createEntityManagerFactory("allternative").createEntityManager(), Ricevo un errore che dice che non esiste tale unità di persistenza.

b) ho hibernate.hbm2ddl.auto Impostato su "Aggiorna" (e ho anche provato con "create"), ma non ricevo feedback che le mie entità siano create nel DB (e in esecuzione show tables; Su MySQL risulta anche un set vuoto). Inoltre non ho un suggerimento se l'unità di persistenza viene creata o meno. DataSource è disponibile (e distribuito da JBoss) e il DB è stato creato.

Il mio beans.xml è localizzato a src/main/webapp/WEB-INF/ (solo nel modulo Web):

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:t="urn:java:org.jboss.seam.persistence.transaction"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="
      http://java.sun.com/xml/ns/javaee   
      http://java.sun.com/xml/ns/javaee/beans_1_0.xsd">
    <interceptors>
        <class>org.jboss.seam.faces.context.conversation.ConversationBoundaryInterceptor</class>
        <class>org.jboss.seam.transaction.TransactionInterceptor</class>
    </interceptors>

</beans>

e attualmente ho un'entità (nel modulo modello):

@Entity
@Table(name="user")
public class User {

    @Id
    @Length(min=6, max=32)
    private String username;

    @NotNull
    private String firstname;

    @NotNull
    private String lastname;

    @NotNull
    @Length(min=6, max=64)
    private String password;

    public String getUsername() {
        return username;
    }

    public void setUsername(String user) {
        this.username = user;
    }

    public String getFirstname() {
        return firstname;
    }

    public void setFirstname(String firstname) {
        this.firstname = firstname;
    }

    public String getLastname() {
        return lastname;
    }

    public void setLastname(String lastname) {
        this.lastname = lastname;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    @Override
    public int hashCode() {
        return this.username.hashCode();
    }

    @Override
    public boolean equals(Object other) {
        if(other == null) {
            return false;
        }
        if(!(other instanceof User)) {
            return false;
        }
        User otherUser = (User)other;
        String user = otherUser.getUsername();
        if(user == null || this.username == null) {
            return false;
        }
        return this.username.equals(user);
    }

    @Override
    public String toString() {
        return this.username;
    }
}

Davvero non capisco perché questo non funziona. Qualcuno mi può aiutare per favore?

Grazie in anticipo,

Andreas

È stato utile?

Soluzione 2

Devo darmi un pugno in faccia a questo, ho scritto male il nome della persistenza.xml ...

Altri suggerimenti

Per quanto ne so il persistence.xml deve essere presente in EJB-Module (il tuo tipo di imballaggio di modello è ejb, Giusto?). In questa directory src/main/resources/META-INFHo anche un vuoto beans.xml.

Non sono sicuro del tuo @ApplicationScoped ApplicationInitializer. Penso che tu stia usando questa classe per ottenere un iniettabile @EntityManager, ma non so se questo sia il modo consigliato (spero che questa risposta sia). Invece di usare la classe ApplicationInitializer Puoi provare quanto segue in EJB Modulo: crea una classe MyRepository per distinguere molteplici unità di persistenza e una classe MyRepositoryProducer a @Produce tuo EntityManager:

@Qualifier
@Target({ ElementType.TYPE, ElementType.METHOD,
          ElementType.PARAMETER, ElementType.FIELD })
@Retention(RetentionPolicy.RUNTIME)
public @interface MyRepository {}

e

public class MyRepositoryProducer
{
  @SuppressWarnings("unused")
  @Produces
  @MyRepository
  @PersistenceContext
  private EntityManager em;
}

allora puoi iniettare il tuo EntityManager nel tuo CurrentUser-Bean con

@Inject @MyRepository private EntityManager em;
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