EntityManager kann nicht in Weld & Naht 3 injiziert werden

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

Frage

Ich fange an, 3 und schweißen zu nehmen. Jetzt kämpfe ich mit der Verschwingung - der EntityManager wird nicht injiziert.

Faust, ich habe ein Maven -Projekt von Grund auf (nicht generiert) eingerichtet. Dieses Projekt hat zwei Submodules:

  • Modell: Enthält nur die Entitäten
  • Web: Enthält Front-End (JSF) und Bohnen (kein EJB). Dieses Modul hängt vom Modellmodul ab.

Also habe ich im Webmodul meine Persistenz.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>

Dann habe ich den Klassenanwaltsinitializer:

@Named
@ApplicationScoped
public class ApplicationInitializer {

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

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

}

Und der Klasse 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;
    }
}

Wenn ich #{currentUser.user} anrufe, bekomme ich die folgende seltsame Ausnahme:

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

Dies geschieht, sobald ich berühre entityManager. Wenn ich es mit Annotation mit @PersistenceContext Anstatt von @Inject Dieser Fehler erfolgt bereits bei der Bereitstellung.

Ich denke, es hat etwas mit der Persistenz zu tun.xml nicht verarbeitet, weil

a) Wenn ich anrufe Persistence.createEntityManagerFactory("allternative").createEntityManager(), Ich bekomme einen Fehler, der besagt, dass es keine solche Persistenzeinheit gibt.

b) Ich habe hibernate.hbm2ddl.auto Set auf "Update" (und auch mit "create"), aber ich bekomme kein Feedback, dass meine Entitäten im DB erstellt werden (und laufend show tables; Auf MySQL ergibt sich auch ein leeres Satz). Ich bekomme auch keinen Hinweis, wenn die Persistenzeinheit erstellt wird oder nicht. Die DataSource ist verfügbar (und von JBoss bereitgestellt) und die DB wird erstellt.

Meine beans.xml ist locatex bei src/main/webapp/WEB-INF/ (Nur im Webmodul):

<?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>

Und derzeit habe ich eine Entität (im Modellmodul):

@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;
    }
}

Ich verstehe wirklich nicht, warum das nicht funktioniert. Kann mir bitte jemand helfen?

Danke im Voraus,

Andreas

War es hilfreich?

Lösung 2

Ich muss mich dafür ins Gesicht schlagen, ich habe den Namen der Persistenz falsch geschrieben.xml ...

Andere Tipps

Soweit ich das kenne persistence.xml muss in der vorhanden sein ejb-modul (Ihr Verpackungstyp von Modell ist ejb, Rechts?). In diesem Verzeichnis src/main/resources/META-INFIch habe auch einen leeren beans.xml.

Ich bin mir nicht sicher über deine @ApplicationScoped ApplicationInitializer. Ich denke, Sie verwenden diese Klasse, um ein injizierbares zu erhalten @EntityManager, aber ich weiß nicht, ob dies der empfohlene Weg ist (ich hoffe, diese Antwort ist). Anstatt die Klasse zu verwenden ApplicationInitializer Sie können Folgendes in der Folgendes ausprobieren ejb Modul: Erstellen einer Klasse MyRepository Mehrere Persistenz-Einheiten und eine Klasse zu unterscheiden MyRepositoryProducer zu @Produce dein EntityManager:

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

und

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

Dann können Sie Ihre injizieren EntityManager in deiner CurrentUser-Bean mit

@Inject @MyRepository private EntityManager em;
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