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社区首页 >问答首页 >EntityManager使用Hibernate 4在Seam3中返回NULL

问EntityManager使用Hibernate 4在Seam3中返回NULL
EN

Stack Overflow用户
提问于 2012-05-18 09:48:59
回答 2查看 1.1K关注 0票数 1

我需要你的帮助，以正确配置我的网页应用程序使用Seam3上的JBoss7与Hibernate 4。

当我尝试注入EntityManager并使用它时，实体管理器的结果为NULL，但是如果试图通过entitymanager获取EntityManager，则结果是正确的。

这是我的persistence.xml

代码语言：javascript
复制
<?xml version="1.0" encoding="UTF-8"?>

">http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">

代码语言：javascript
复制
<persistence-unit name="accbetaPU" transaction-type="JTA">
    <provider>org.hibernate.ejb.HibernatePersistence</provider>
    <jta-data-source>accbeta</jta-data-source>
    <properties>               
        <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect" />            
        <property name="hibernate.transaction.manager_lookup_class"
            value="org.hibernate.transaction.JBossTransactionManagerLookup" />
        <property name="hibernate.archive.autodetection" value="class" />
    </properties>
</persistence-unit>

​

这是我的EntityManagerProducer

代码语言：javascript
复制
@ApplicationScoped
public class EntityManagerProducer{

@PersistenceContext
private EntityManager entityManager;

@Produces
public EntityManager getEntityManager() {
    return entityManager;
}
}

这是my /Web/beans.xml

代码语言：javascript
复制
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://java.sun.com/xml/ns/javaee"
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>

这是我参加EntityManager考试的课程.

代码语言：javascript
复制
@ApplicationScoped
@Named("first")
public class first implements Serializable{

private static final long serialVersionUID = -1625566649081574918L;
private String testBenvenuto;

@Inject 
   private EntityManager entityManager;


public first() {
    this.testBenvenuto = "Welcome";
    starting();

}

public void starting(){
    this.testBenvenuto = this.testBenvenuto+" "+entityManager;
    this.testBenvenuto = this.testBenvenuto+" "+Persistence.createEntityManagerFactory("accbetaPU").createEntityManager().toString();

}

public String getTestBenvenuto() {
    return testBenvenuto;
}

public void setTestBenvenuto(String testBenvenuto) {
    this.testBenvenuto = testBenvenuto;
}
}

当尝试在JBOSS As7中部署(WAR)时，应用程序毫无例外地被部署.

几个小时后..。

我尝试在EntityManagerProducer中使用以下代码：

代码语言：javascript
复制
@ExtensionManaged
    @ConversationScoped
    @Produces
    @PersistenceUnit(unitName="accbetaPU")
    EntityManagerFactory emf;

但是，在部署过程中出现了以下错误：

代码语言：javascript
复制
16:14:03,550 INFO [org.jboss.solder.core.CoreExtension] (MSC service thread 1-1) Preventing class org.jboss.seam.international.locale.LocaleConfiguration from being installed as bean due to @Veto annotation
16:14:05,715 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-1) MSC00001: Failed to start service jboss.deployment.unit."accbeta.war".WeldService: org.jboss.msc.service.StartException in service jboss.deployment.unit."accbeta.war".WeldService: org.jboss.weld.exceptions.DefinitionException: WELD-001502 Resource producer field [Resource Producer Field [EntityManagerFactory] with qualifiers [@Any @Default] declared as [[field] @PersistenceUnit @ConversationScoped @Produces startup.first.emf]] must be @Dependent scoped
 at org.jboss.as.weld.services.WeldService.start(WeldService.java:96)
 at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1824) [jboss-msc-1.0.1.GA.jar:1.0.1.GA]
 at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1759) [jboss-msc-1.0.1.GA.jar:1.0.1.GA]
 at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_25]
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_25]
 at java.lang.Thread.run(Thread.java:662) [:1.6.0_25]
Caused by: org.jboss.weld.exceptions.DefinitionException: WELD-001502 Resource producer field [Resource Producer Field [EntityManagerFactory] with qualifiers [@Any @Default] declared as [[field] @PersistenceUnit @ConversationScoped @Produces startup.first.emf]] must be @Dependent scoped
 at org.jboss.weld.bean.builtin.ee.EEResourceProducerField.checkEEResource(EEResourceProducerField.java:133)
 at org.jboss.weld.bean.builtin.ee.EEResourceProducerField.initialize(EEResourceProducerField.java:125)
 at org.jboss.weld.bootstrap.AbstractBeanDeployer.deploy(AbstractBeanDeployer.java:119)
 at org.jboss.weld.bootstrap.BeanDeployment.deployBeans(BeanDeployment.java:227)
 at org.jboss.weld.bootstrap.WeldBootstrap.deployBeans(WeldBootstrap.java:378)
 at org.jboss.as.weld.WeldContainer.start(WeldContainer.java:81)
 at org.jboss.as.weld.services.WeldService.start(WeldService.java:89)
 ... 5 more

16:14:05,715 INFO [org.jboss.as.controller] (DeploymentScanner-threads - 2) Service status report
 Services which failed to start:
 service jboss.deployment.unit."accbeta.war".WeldService: org.jboss.msc.service.StartException in service jboss.deployment.unit."accbeta.war".WeldService: org.jboss.weld.exceptions.DefinitionException: WELD-001502 Resource producer field [Resource Producer Field [EntityManagerFactory] with qualifiers [@Any @Default] declared as [[field] @PersistenceUnit @ConversationScoped @Produces startup.first.emf]] must be @Dependent scoped

焊接-001502资源生成器字段[资源生产者字段EntityManagerFactory，限定符@Any @Default声明为[字段@PersistenceUnit @ConversationScoped @Produces startup.first.emf]]必须是“依赖范围”

我该怎么办？少了什么？

下面是war文件中库的列表：

代码语言：javascript
复制
commons-beanutils-1.8.0.jar
commons-digester-2.1.jar
commons-logging-1.1.1.jar
cssparser-0.9.5.jar
guava-0.9.jar
hibernate-entitymanager-4.0.0.CR1.jar
jboss-servlet-api_3.0_spec-1.0.0.Final.jar
joda-time-1.6.jar
log4j-1.2.16.jar
ocpsoft-pretty-time-1.0.6.jar
picketlink-idm-api-1.5.0.Alpha02.jar
picketlink-idm-common-1.5.0.Alpha02.jar
picketlink-idm-core-1.5.0.Alpha02.jar
picketlink-idm-spi-1.5.0.Alpha02.jar
postgresql-9.0-801.jdbc4.jar
prettyfaces-jsf2-3.2.0.jar
richfaces-components-api-4.2.1.Final.jar
richfaces-components-ui-4.2.1.Final.jar
richfaces-core-api-4.2.1.Final.jar
richfaces-core-impl-4.2.1.Final.jar
sac-1.3.jar
seam-faces-3.1.0.Final.jar
seam-faces-api-3.1.0.Final.jar
seam-international-3.1.0.Final.jar
seam-international-api-3.1.0.Final.jar
seam-persistence-3.1.0.Final.jar
seam-persistence-api-3.1.0.Final.jar
seam-security-3.1.0.Final.jar
seam-security-api-3.1.0.Final.jar
slf4j-api-1.6.1.jar
slf4j-simple-1.6.1.jar
solder-api-3.1.0.Final.jar
solder-impl-3.1.0.Final.jar
solder-logging-3.1.0.Final.jar

Jboss版本为7.0.2

请帮帮我

谢谢你的回答..。我试图删除hibernate-entitymanager-4.0.0.CR1.jar和jboss-servlet-api_3.0_spec-1.0.0.Final.jar，但没有效果！

我也改变了persistence.xml

代码语言：javascript
复制
<persistence-unit name="accbetaPU">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <jta-data-source>java:jboss/datasources/AccbetaDS</jta-data-source>
        <properties>
            <!-- Properties for Hibernate (default provider for JBoss AS) -->
            <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect"/>
            <property name="hibernate.hbm2ddl.auto" value="create-drop"/>
            <property name="hibernate.show_sql" value="true"/>
            <!-- Only format when you need to debug, because it slows things down -->
            <property name="hibernate.format_sql" value="false"/>
            <property name="hibernate.show_sql" value="false"/>
            <property name="hibernate.transaction.manager_lookup_class"
                value="org.hibernate.transaction.JBossTransactionManagerLookup" />
        </properties>
    </persistence-unit>

当我试图用这种方式创建实体管理器时.

代码语言：javascript
复制
@ExtensionManaged
    @ConversationScoped
    @Produces
    @PersistenceUnit(unitName="accbetaPU")
    EntityManagerFactory emf;

错误是一样的..。

代码语言：javascript
复制
17:11:20,589 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-4) MSC00001: Failed to start service jboss.deployment.unit."accbeta.war".WeldService: org.jboss.msc.service.StartException in service jboss.deployment.unit."accbeta.war".WeldService: org.jboss.weld.exceptions.DefinitionException: WELD-001502 Resource producer field [Resource Producer Field [EntityManagerFactory] with qualifiers [@Any @Default] declared as [[field] @ConversationScoped @PersistenceUnit @Produces startup.first.emf]] must be @Dependent scoped
 at org.jboss.as.weld.services.WeldService.start(WeldService.java:96)
 at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1824) [jboss-msc-1.0.1.GA.jar:1.0.1.GA]
 at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1759) [jboss-msc-1.0.1.GA.jar:1.0.1.GA]
 at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_25]
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_25]
 at java.lang.Thread.run(Thread.java:662) [:1.6.0_25]
Caused by: org.jboss.weld.exceptions.DefinitionException: WELD-001502 Resource producer field [Resource Producer Field [EntityManagerFactory] with qualifiers [@Any @Default] declared as [[field] @ConversationScoped @PersistenceUnit @Produces startup.first.emf]] must be @Dependent scoped
 at org.jboss.weld.bean.builtin.ee.EEResourceProducerField.checkEEResource(EEResourceProducerField.java:133)
 at org.jboss.weld.bean.builtin.ee.EEResourceProducerField.initialize(EEResourceProducerField.java:125)
 at org.jboss.weld.bootstrap.AbstractBeanDeployer.deploy(AbstractBeanDeployer.java:119)
 at org.jboss.weld.bootstrap.BeanDeployment.deployBeans(BeanDeployment.java:227)
 at org.jboss.weld.bootstrap.WeldBootstrap.deployBeans(WeldBootstrap.java:378)
 at org.jboss.as.weld.WeldContainer.start(WeldContainer.java:81)
 at org.jboss.as.weld.services.WeldService.start(WeldService.java:89)
 ... 5 more

17:11:20,605 INFO [org.jboss.as.controller] (DeploymentScanner-threads - 2) Service status report
 Services which failed to start:
 service jboss.deployment.unit."accbeta.war".WeldService: org.jboss.msc.service.StartException in service jboss.deployment.unit."accbeta.war".WeldService: org.jboss.weld.exceptions.DefinitionException: WELD-001502 Resource producer field [Resource Producer Field [EntityManagerFactory] with qualifiers [@Any @Default] declared as [[field] @ConversationScoped @PersistenceUnit @Produces startup.first.emf]] must be @Dependent scoped

谢谢你的回答..。我试图删除hibernate-entitymanager-4.0.0.CR1.jar和jboss-servlet-api_3.0_spec-1.0.0.Final.jar，但没有效果！

我也改变了persistence.xml

代码语言：javascript
复制
<persistence-unit name="accbetaPU">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <jta-data-source>java:jboss/datasources/AccbetaDS</jta-data-source>
        <properties>
            <!-- Properties for Hibernate (default provider for JBoss AS) -->
            <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect"/>
            <property name="hibernate.hbm2ddl.auto" value="create-drop"/>
            <property name="hibernate.show_sql" value="true"/>
            <!-- Only format when you need to debug, because it slows things down -->
            <property name="hibernate.format_sql" value="false"/>
            <property name="hibernate.show_sql" value="false"/>
            <property name="hibernate.transaction.manager_lookup_class"
                value="org.hibernate.transaction.JBossTransactionManagerLookup" />
        </properties>
    </persistence-unit>

当我尝试创建实体管理器时，错误是相同的.

seam3
hibernate
persistence
jboss7.x
entitymanager
EN

回答 2

Stack Overflow用户

发布于 2012-05-18 16:54:38

首先，我将删除hibernate-entitymanager-4.0.0.CR1.jar和jboss-servlet-api_3.0_spec-1.0.0.Final.jar。不确定这是问题所在，但这些并不一定需要。

另外，<jta-data-source>accbeta</jta-data-source>不应该像<jta-data-source>java:jboss/datasources/accbeta</jta-data-source>那样吗？诚然，我还没有在AS 7中充分使用JPA，但我知道大多数示例如下所示:-)

票数 0
EN

Stack Overflow用户

发布于 2013-02-18 22:51:30

我读取了您的堆栈跟踪，检查这个小小的修改是否更改了堆栈跟踪。

在您的EntityManagerFactory中，删除@ConversationScope并添加@依赖注释。

我提到这一点是因为：

代码语言：javascript
复制
Caused by: org.jboss.weld.exceptions.DefinitionException: WELD-001502 Resource producer field [Resource Producer Field [EntityManagerFactory] with qualifiers [@Any @Default] declared as [[field] @PersistenceUnit @ConversationScoped @Produces startup.first.emf]] must be @Dependent scoped
票数 0
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/10650342

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