Eclipselink＆Spring Data

Question

我正在嘗試使用eclipselink（2.4.0）和spring-data-jpa（1.1.0.RELEASE）的組合來實現解決方案。但是，每次我部署解決方案（Tomcat的7）時，我得到以下異常：

Caused by: java.lang.IllegalArgumentException: No [ManagedType] was found for 
the key class [com.acme.domain.entities.User] in the Metamodel - please 
verify that the [Managed] class was referenced in persistence.xml using a 
specific <class>com.acme.domain.entities.User</class> property or a global 
<exclude-unlisted-classes>false</exclude-unlisted-classes> element. 

它出現時庫自動裝配發生（代碼下面的示例）發生：

服務類

@Component 
public class UserDataService { 

    @Autowired 
    private UserRepository userRepository; 

    ... 
} 

實體類

package com.acme.domain.entities; 

... 

@Entity 
@Table(name = "users") 
public class User implements Serializable { 

    @Id 
    @GeneratedValue(strategy = GenerationType.IDENTITY) 
    @Column(name = "user_id") 
    private Integer id; 

    ... 

} 

的persistence.xml

<persistence-unit name="default" transaction-type="RESOURCE_LOCAL"> 
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>  
    <class>com.acme.domain.entities.User</class> 

    ... 
</persistence-unit> 

這可能是由於spring和eclipselink之間的一些衝突？

UPDATE：

堆棧跟蹤...

[#|2012-07-31 16:25:02,317|ERROR|pool-2-thread-40|org.springframework.web.context.ContextLoader|Context initialization failed|#] 
    org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userDataService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.acme.data.repositories.UserRepository com.acme.data.services.UserDataService.userRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userRepository': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalArgumentException: No [ManagedType] was found for the key class [com.acme.domain.entities.User] in the Metamodel - please verify that the [Managed] class was referenced in persistence.xml using a specific <class>com.acme.domain.entities.User</class> property or a global <exclude-unlisted-classes>false</exclude-unlisted-classes> element. 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:287) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:609) 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:469) 
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:383) 
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283) 
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112) 
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4779) 
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5273) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:897) 
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:873) 
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615) 
    at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:958) 
    at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1599) 
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) 
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) 
    at java.util.concurrent.FutureTask.run(FutureTask.java:138) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) 
    at java.lang.Thread.run(Thread.java:680) 
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.acme.data.repositories.UserRepository com.acme.data.services.UserDataService.userRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userRepository': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalArgumentException: No [ManagedType] was found for the key class [com.acme.domain.entities.User] in the Metamodel - please verify that the [Managed] class was referenced in persistence.xml using a specific <class>com.acme.domain.entities.User</class> property or a global <exclude-unlisted-classes>false</exclude-unlisted-classes> element. 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:512) 
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:92) 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:284) 
    ... 27 more 
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userRepository': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalArgumentException: No [ManagedType] was found for the key class [com.acme.domain.entities.User] in the Metamodel - please verify that the [Managed] class was referenced in persistence.xml using a specific <class>com.acme.domain.entities.User</class> property or a global <exclude-unlisted-classes>false</exclude-unlisted-classes> element. 
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:149) 
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:102) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1442) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:305) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:876) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:818) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:735) 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:484) 
    ... 29 more 
Caused by: java.lang.IllegalArgumentException: No [ManagedType] was found for the key class [com.acme.domain.entities.User] in the Metamodel - please verify that the [Managed] class was referenced in persistence.xml using a specific <class>com.acme.domain.entities.User</class> property or a global <exclude-unlisted-classes>false</exclude-unlisted-classes> element. 
    at org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl.entityEmbeddableManagedTypeNotFound(MetamodelImpl.java:174) 
    at org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl.managedType(MetamodelImpl.java:489) 
    at org.springframework.data.jpa.repository.support.JpaMetamodelEntityInformation.<init>(JpaMetamodelEntityInformation.java:58) 
    at org.springframework.data.jpa.repository.support.JpaEntityInformationSupport.getMetadata(JpaEntityInformationSupport.java:65) 
    at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getEntityInformation(JpaRepositoryFactory.java:149) 
    at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetRepository(JpaRepositoryFactory.java:87) 
    at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetRepository(JpaRepositoryFactory.java:70) 
    at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:137) 
    at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.getObject(RepositoryFactoryBeanSupport.java:125) 
    at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.getObject(RepositoryFactoryBeanSupport.java:41) 
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:142) 
    ... 37 more 

Answer 1

我能解決我的問題，但它是另一個設置爲上面的一個，我只是添加了一些事情，我偶然發現，直到我能夠在我的SE環境中解決它：

• 錯誤https://bugs.eclipse.org/bugs/show_bug.cgi?id=338837影響EclipseLink版本2.2.0及以下版本。主要發生在本地環境（RESOURCE_LOCAL）中。一個的EclipseLink版本升級或以下解決方法可能會有所幫助：

<exclude-unlisted-classes>false</exclude-unlisted-classes> 

• 有在類路徑多個persistence.xml中的文件（例如，尤其是在屆黨JAR文件），所有的定義相同的持久性單元名稱（高於「默認」可能非常普遍）。嘗試在這種情況下重命名您的持久性單元名稱作爲第一步

• 如果重命名持久性單元名稱已工作但將其更改回舊值再現問題，則上面提到的第三方JAR或者你自己的項目的舊的JAR beeing列入到您的構建（如重構/重命名的項目級別或類似改變了結構，例如一個Maven構建仍然可以採取從資源庫中舊的構建構件）

Finaly時它涉及到我的設置（Spring獨立應用程序，沒有persistence.xml，但由於使用自定義公司框架，因此Spring的配置很多），這表明我只是忘了廣告d當我想在本地項目中運行他們的一個服務實現（Spring-Bean實現）時，定製框架核心的實體包，而不是從JAR依賴項實現其服務實現。因此，請確保您擁有所有你的EntityManagerFactory上市所需的實體包：

<bean id="customEntityManagerFactory" parent="abstractEntityManagerFactory"> 
     <property name="dataSource" ref="dataSource"/> 


     <!-- Packages of EntityClasses --> 
     <property name="packagesToScan"> 
      <list merge="true"> 
       <value>ch.company.div1.foo.bar.model</value> 
       <value>ch.company.div1.foo.barnicle.model</value> 
       <value>ch.company.div2.we.help.model</value> 
      </list> 
     </property> 

     <property name="jpaProperties"> 
      <props merge="true"> 
       <prop key="eclipselink.target-database">org.eclipse.persistence.platform.database.SQLServerPlatform 
       </prop> 
       <prop key="javax.persistence.transactionType">RESOURCE_LOCAL</prop> 
      </props> 
     </property> 
    </bean> 

在我來說，我忘了與其他部門的使用實體來說的（即寫入定製的框架核心）添加模型packagege我們公司。

祝你好運，這個錯誤是一個野獸：/

Answer 2

不知道，如果你有同樣的問題，我：努力創建2個不同的實體工廠......唯一的例外是一樣的，所以也許這將幫助。從本質上講，這個異常是在錯誤的EntityManagerFactory上實例化實體時發生的。

我的項目運行良好，只有一個數據庫連接，但是當我添加第二個EclipseLink時，我對實例化實體的位置感到困惑。經過幾次調試，我的結論是從我的root-context.xml中刪除屬性「packagesToScan」，並將其替換爲「persistenceXmlLocation」。在該XML，我列出的每個類，我需要被掃描並排除一切與「<排除，非上市類>」

這是我當前工作的完整的XML配置：

根上下文。 XML

<bean id="dataSource1" class="org.apache.commons.dbcp2.BasicDataSource" destroy-method="close"> 
    <property name="driverClassName" value="org.postgresql.Driver" /> 
    <property name="url" value="jdbc:postgresql://server1.example.com:5432/db1" /> 
    <property name="username" value="username" /> 
    <property name="password" value="password" /> 
    <property name="defaultAutoCommit" value="false" /> 
    <property name="initialSize" value="5" /> 
    <property name="maxIdle" value="5" /> 
    <property name="validationQuery" value="SELECT 1" /> 
    <property name="timeBetweenEvictionRunsMillis" value="600000" /> 
    <property name="poolPreparedStatements" value="true" /> 
    <property name="maxOpenPreparedStatements" value="10" /> 
</bean> 

<bean id="dataSource2" class="org.apache.commons.dbcp2.BasicDataSource" destroy-method="close"> 
    <property name="driverClassName" value="org.postgresql.Driver" /> 
    <property name="url" value="jdbc:postgresql://server2.example.com:5432/db2" /> 
    <property name="username" value="user" /> 
    <property name="password" value="password" /> 
    <property name="defaultAutoCommit" value="false" /> 
    <property name="initialSize" value="5" /> 
    <property name="maxIdle" value="5" /> 
    <property name="validationQuery" value="SELECT 1" /> 
    <property name="timeBetweenEvictionRunsMillis" value="600000" /> 
    <property name="poolPreparedStatements" value="true" /> 
    <property name="maxOpenPreparedStatements" value="10" /> 
</bean> 


<bean id="emf1" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> 
    <property name="dataSource" ref="dataSource1" /> 
    <property name="persistenceXmlLocation" value="classpath:META-INF/persistence1.xml" /> 
    <property name="jpaVendorAdapter"> 
     <bean class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter"> 
      <property name="showSql" value="false" /> 
     </bean> 
    </property> 
    <property name="jpaPropertyMap"> 
     <map> 
      <entry key="eclipselink.weaving" value="false" /> 
      <entry key="eclipselink.logging.level" value="WARNING" /> 
      <entry key="eclipselink.logging.timestamp" value="false" /> 
      <entry key="eclipselink.logging.session" value="false" /> 
      <entry key="eclipselink.logging.thread" value="false" /> 
     </map> 
    </property> 
    <property name="loadTimeWeaver"> 
     <bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" /> 
    </property> 
</bean> 

<bean id="emf2" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> 
    <property name="dataSource" ref="dataSource2" /> 
    <property name="persistenceXmlLocation" value="classpath:META-INF/persistence2.xml" /> 
    <property name="jpaVendorAdapter"> 
     <bean class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter"> 
      <property name="showSql" value="false" /> 
     </bean> 
    </property> 
    <property name="jpaPropertyMap"> 
     <map> 
      <entry key="eclipselink.weaving" value="false" /> 
      <entry key="eclipselink.logging.level" value="WARNING" /> 
      <entry key="eclipselink.logging.timestamp" value="false" /> 
      <entry key="eclipselink.logging.session" value="false" /> 
      <entry key="eclipselink.logging.thread" value="false" /> 
     </map> 
    </property> 
    <property name="loadTimeWeaver"> 
     <bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" /> 
    </property> 
</bean> 

<bean name="transaction1" class="org.springframework.orm.jpa.JpaTransactionManager" p:entity-manager-factory-ref="emf1" /> 
<bean name="transaction2" class="org.springframework.orm.jpa.JpaTransactionManager" p:entity-manager-factory-ref="emf2" /> 

<jpa:repositories base-package="org.myproject.repository1" transaction-manager-ref="transaction1" entity-manager-factory-ref="emf1" /> 
<jpa:repositories base-package="org.myproject.repository2" transaction-manager-ref="transaction2" entity-manager-factory-ref="emf2" /> 

<tx:annotation-driven /> 

persistence1.xml

<persistence-unit name="persistence1" transaction-type="RESOURCE_LOCAL"> 
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider> 
    <class>org.myproject.repository1.Repo1</class> 
    <class>org.myproject.repository1.Repo2</class> 
    <exclude-unlisted-classes>true</exclude-unlisted-classes> 
</persistence-unit> 

persistence2.xml

<persistence-unit name="persistence2" transaction-type="RESOURCE_LOCAL"> 
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider> 
    <class>org.myproject.repository2.Repo1</class> 
    <class>org.myproject.repository2.Repo2</class> 
    <exclude-unlisted-classes>true</exclude-unlisted-classes> 
</persistence-unit> 

所以，這對我的作品......

顯然，指定每個「persistence.xml中」位置防止意味着另一個EntityManagerFactory的類要在第一個「EMF」實例化。實際上，這看起來像一個錯誤https://bugs.eclipse.org/bugs/show_bug.cgi?id=338837。我從調試中得出的結論是，如果沒有「persistenceXmlLocation」，所有使用「packageScan」找到的類在第一個創建的「emf」上實例化，第二個「emf」被完全忽略。

希望這會有所幫助。祝你好運！

Answer 3

將實體包裝（com.acme.domain.entities）添加到實體packagesToScan。

Answer 4

設置PersistenceUnitName，而不是persistenceXmlLocation

沒有persistence.xml需要。

factory.setPersistenceUnitName("dummy1"); 
factory.setPersistenceUnitName("dummy2");