那些遇到过的问题

Eclipselink和Spring数据

Nub*_*ieJ 9 eclipselink spring-data-jpa

我正在尝试使用eclipselink(2.4.0)和spring-data-jpa(1.1.0.RELEASE)的组合来实现解决方案.但是,每次部署解决方案(Tomcat 7)时,都会出现以下异常:

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.
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它似乎发生在存储库自动装配发生时(下面的代码示例):

服务类

@Component
public class UserDataService {

    @Autowired
    private UserRepository userRepository;

    ...
}
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实体类

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;

    ...

}
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persistence.xml中

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

    ...
</persistence-unit>
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这可能是由于spring和eclipselink之间的一些冲突吗？

更新:

堆栈跟踪...

[#|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
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JBA*_*JBA 1

我能够解决我的问题，但这是与上面相同的另一种设置，我只是添加了一些我偶然发现的东西，直到我能够在我的 SE 环境中解决它：

<exclude-unlisted-classes>false</exclude-unlisted-classes>
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  • 类路径中有多个 persistence.xml 文件（例如，特别是在第 3 方 JAR 中），所有文件都定义相同的持久性单元名称（“默认”以上可能很常见）。在这种情况下，第一步尝试重命名您的持久性单元名称

  • 如果重命名持久性单元名称有效，但将其更改回旧值会重现问题，则存在上述第 3 方 JAR 或您自己项目的旧 JAR 包含在您的构建中（例如在项目级别进行重构/重命名）或类似的结构改变，例如 Maven 构建仍然可以从存储库中获取旧的构建工件）

最后，当谈到我的设置时（Spring-独立应用程序，没有 persistence.xml，但有大量 Spring 配置，因为使用了自定义公司框架），它表明我只是忘记添加自定义框架核心的实体包当我想在我的本地项目中运行他们的服务实现之一（Spring-Bean 实现）而不是从 JAR 依赖项获得他们的服务实现时。因此，请确保您已列出 EntityManagerFactory 所需的所有实体包：

    <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>
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就我而言，我忘记添加模型包以及我们公司另一个部门（编写自定义框架核心）的使用实体。

祝你好运，这个错误是一个野兽：/

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