无法在焊缝和焊缝中注入entityManager 3

我正在开始使用Seam 3和Weld。现在我正在苦苦挣扎 - entityManager没有被注入。无法在焊缝和焊缝中注入entityManager 3

拳头，我从零开始设置了一个maven项目（不是生成的）。这个项目有两个子模块：

模式：只包含实体
网：包含前端（JSF）和豆类（无EJB）。这个模块取决于模型模块。

所以在Web模块中，我有我的persistence.xml在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>

然后我有类ApplicationInitializer：

@Named 
@ApplicationScoped 
public class ApplicationInitializer { 

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

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

}

和类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; 
    } 
}

当我打电话＃{currentUs er.user}我得到以下奇怪的例外：

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

这一旦我碰entityManager发生。当我使用@PersistenceContext而不是@Inject对其进行注释时，此错误在部署时就已经发生。

我猜它是与不beeing处理persistence.xml中，因为

一）当我打电话Persistence.createEntityManagerFactory("allternative").createEntityManager()，我得到一个错误，说没有这样的持久性单元。

B）我有hibernate.hbm2ddl.auto设置为“更新”（也试图与“创造”），但我没有得到我的实体在数据库中创建反馈（和MySQL的运行show tables;也导致空集）。如果创建持久性单元，我也不会得到提示。 DataSource可用（并由JBoss部署）并创建数据库。

我的beans.xml在src/main/webapp/WEB-INF/（仅在Web模块）locatex：

<?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>

，目前我有一个实体（模型模块）：

@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; 
    } 
}

我真不不明白为什么这不起作用。任何人都可以帮助我吗？

由于提前，

安德烈亚斯

来源

2011-12-02 thobens

我得在自己的脸上打这个，我拼错了persistence.xml的名字...

来源

2011-12-28 15:04:43 thobens

据我所知persistence.xml必须存在于EJB - 模（您的包装类型模型是ejb，正确的？）。在这个目录中src/main/resources/META-INF我也有一个空的beans.xml。我不确定你的@ApplicationScoped ApplicationInitializer。我认为你正在使用这个班来获得注射剂@EntityManager，但我不知道这是否是推荐的方法（我希望这个答案是）。除了使用类的ApplicationInitializer你可以尝试EJB模块中执行以下操作：创建一个类MyRepository区分多个持久化单元和一类MyRepositoryProducer到@Produce您EntityManager：

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

和

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

然后你就可以在你的CurrentUser -Bean中注入你的EntityManager

@Inject @MyRepository private EntityManager em;

来源

2011-12-03 07:13:41 Thor

感谢您的回答。我根本不使用ejb，所以我的包装不是ejb，而是战争。根据我的理解，我应该在Web模块中创建这个生产者（这是打包成战争）。这基本上是我的ApplicationInitializer会做的。 MyRepositoryProducer是否需要处理@Named注释？我只是想知道，因为在Seam 2中你必须这样做，否则不能进行注射。 – thobens

我现在已经创建了RepositoryProducer和@Qualifier注解，但是当我访问注入的entityManager时，我仍然得到相同的异常......并且我的数据库中的表格仍未创建。 – thobens

你可以解释一下*我没有使用ejb吗？你有一个'@ Entity' Bean并想知道为什么你的表没有被创建。你能用一个例子来检查你的JBoss7配置吗？我在这里提到了这个原型：http://stackoverflow.com/questions/8332561 – Thor

无法在焊缝和焊缝中注入entityManager 3

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