没有为Metamodel中的密钥类[...]找到[EntityType] [英] No [EntityType] was found for the key class [...] in the Metamodel

问题描述

实体：

  @Entity 
 @Table（name =user_account ）
公共类UserAccount实现Serializable {
 private static final long serialVersionUID = -2606506548742732094L; 
 
 @Id 
 @GeneratedValue（strategy = GenerationType.TABLE）
 private Integer id; 
  

persistence.xml

 < persistence-unit name =Mazetransaction-type =RESOURCE_LOCAL> 
 
< exclude-unlisted-classes> false< / exclude-unlisted-classes> 
< properties> 
< property name =javax.persistence.jdbc.drivervalue =com.mysql.jdbc.Driver/> 
< property name =javax.persistence.jdbc.urlvalue =jdbc：mysql：// localhost：3306 / mazedb/> 
< property name =javax.persistence.jdbc.uservalue =root/> 
< property name =javax.persistence.jdbc.passwordvalue =root/> 
< / properties> 
 
< / persistence-unit> 
  

错误

 警告：＃{accountController.performLogin}：java.lang.IllegalArgumentException：未找到元模型中密钥类[com.maze.model.UserAccount]的[EntityType]  - 请使用特定的< class> com.maze.model.UserAccount< / class>验证是否在persistence.xml中引用了[Entity]类。属性或全局< exclude-unlisted-classes> false< / exclude-unlisted-classes>元件。 
 javax.faces.FacesException：＃{accountController.performLogin}：java.lang.IllegalArgumentException：未找到Metamodel中密钥类[com.maze.model.UserAccount]的[EntityType]  - 请验证使用特定的< class> com.maze.model.UserAccount< / class>在persistence.xml中引用了[Entity]类。属性或全局< exclude-unlisted-classes> false< / exclude-unlisted-classes>元件。 
 at com.sun.faces.application.ActionListenerImpl.processAction（ActionListenerImpl.java:118）
 at javax.faces.component.UICommand.broadcast（UICommand.java:315）
 at javax .faces.component.UIViewRoot.broadcastEvents（UIViewRoot.java:794）
 at javax.faces.component.UIViewRoot.processApplication（UIViewRoot.java:1259）
 at com.sun.faces.lifecycle.InvokeApplicationPhase .execute（InvokeApplicationPhase.java:81）
 at com.sun.faces.lifecycle.Phase.doPhase（Phase.java:101）
 at com.sun.faces.lifecycle.LifecycleImpl.execute（LifecycleImpl .java：118）
 at javax.faces.webapp.FacesServlet.service（FacesServlet.java:593）
 at org.apache.catalina.core.StandardWrapper.service（StandardWrapper.java:1539）
 at org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:281）
 at org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:175）
 at org.apache.catalina.core.StandardPipeline.do在com.sun.enterprise.web.WebPipeline.invoke（WebPipeline。）的org.apache.catalina.core.StandardPipeline.invoke（StandardPipeline.java:595）
调用（StandardPipeline.java:655）
。 java：98）
 at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke（PESessionLockingStandardPipeline.java:91）
 at org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:162） 
 at org.apache.catalina.connector.CoyoteAdapter.doService（CoyoteAdapter.java:330）
 at org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:231) 
 at com.sun.enterprise.v3.services.impl.ContainerMapper.service（ContainerMapper.java:174）
 at com.sun.grizzly.http.ProcessorTask.invokeAdapter（ProcessorTask.java:828) 
 at com.sun.grizzly.http.ProcessorTask.doProcess（ProcessorTask.java:725）
 at com.sun.grizzly.http.ProcessorTask.process（ProcessorTask.java:1019）
 at com.sun .grizzly.http.DefaultProtocolFilter.execute（DefaultProt ocolFilter.java:225）
 at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter（DefaultProtocolChain.java:137）
 at com.sun.grizzly.DefaultProtocolChain.execute（DefaultProtocolChain.java:104)
 at com.sun.grizzly.DefaultProtocolChain.execute（DefaultProtocolChain.java:90）
 at com.sun.grizzly.http.HttpProtocolChain.execute（HttpProtocolChain.java:79）
 at com.sun .grizzly.ProtocolChainContextTask.doCall（ProtocolChainContextTask.java:54）
 at com.sun.grizzly.SelectionKeyContextTask.call（SelectionKeyContextTask.java:59）
 at com.sun.grizzly.ContextTask.run（ContextTask .java：71）
 at com.sun.grizzly.util.AbstractThreadPool $ Worker.doWork（AbstractThreadPool.java:532）
 at com.sun.grizzly.util.AbstractThreadPool $ Worker.run（AbstractThreadPool） .java：513）
 at java.lang.Thread.run（Thread.java:662) 
  

行为
每次重新启动Web容器时，一切正常e几分钟，然后抛出这个错误。我缺少什么？

编辑：

现在我使用了一个实体应用程序范围以及Country Entity也会出现相同的错误。 User和Country都定义为persistance.xml中的类。此外，exclude-unlisted-classes设置为false。

  SEVERE：部署期间出现严重错误：
 java.lang .ExceptionInInitializerError 
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0（Native Method）
 at sun.reflect.NativeConstructorAccessorImpl.newInstance（NativeConstructorAccessorImpl.java:39）
 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance（ DelegatingConstructorAccessorImpl.java:27）
 at java.lang.reflect.Constructor.newInstance（Constructor.java:513）
 at java.lang.Class.newInstance0（Class.java:355)
 at java.lang.Class.newInstance（Class.java:308）
 at com.sun.faces.mgbean.BeanBuilder.newBeanInstance（BeanBuilder.java:188)
 at com.sun.faces.mgbean .BeanBuilder.build（BeanBuilder.java:102）
 at com.sun.faces.mgbean.BeanManager.createAndPush（BeanManager.java:409）
 at com.sun.faces.mgbean.BeanManager.create （BeanManager.java:269）
 at com.sun.faces.mgbean.BeanManager.create（BeanM anager.java:256）
 at com.sun.faces.config.ConfigureListener.contextInitialized（ConfigureListener.java:255）
 at org.apache.catalina.core.StandardContext.contextListenerStart（StandardContext.java： 4750）
 at com.sun.enterprise.web.WebModule.contextListenerStart（WebModule.java:550）
 at org.apache.catalina.core.StandardContext.start（StandardContext.java:5366)
 at com.sun.enterprise.web.WebModule.start（WebModule.java:498）
 at org.apache.catalina.core.ContainerBase.addChildInternal（ContainerBase.java:917) 
 at org .apache.catalina.core.ContainerBase.addChild（ContainerBase.java:901）
 at org.apache.catalina.core.StandardHost.addChild（StandardHost.java:733）
 at com.sun.enterprise .web.WebContainer.loadWebModule（WebContainer.java:2000）
 at com.sun.enterprise.web.WebContainer.loadWebModule（WebContainer.java:1651）
 at com.sun.enterprise.web.WebApplication .start（WebApplication.java:109）
 at org.glassfish.internal.data.EngineRef.start（EngineRef.java:130）
 at org.glassfish.internal.data.ModuleInfo.start（ModuleInfo.java:269）
 at org.glassfish.internal.data.ApplicationInfo.start（ApplicationInfo.java:294）
 at com .sun.enterprise.v3.server.ApplicationLifecycle.deploy（ApplicationLifecycle.java:462）
 at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy（ApplicationLifecycle.java:240) 
 at org .glassfish.deployment.admin.DeployCommand.execute（DeployCommand.java:382）
 at com.sun.enterprise.v3.admin.CommandRunnerImpl $ 1.execute（CommandRunnerImpl.java:355）
 at com。 sun.enterprise.v3.admin.CommandRunnerImpl.doCommand（CommandRunnerImpl.java:370）
 at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand（CommandRunnerImpl.java:1064）
 at com。 sun.enterprise.v3.admin.CommandRunnerImpl.access $ 1200（CommandRunnerImpl.java:96）
 at com.sun.enterprise.v3.admin.CommandRunnerImpl $ ExecutionContext.execute（CommandRunnerImpl.java:1244)
在com.sun.enterprise.v3.admin.CommandRunnerImpl $ ExecutionContext.execute（CommandRun） nerImpl.java:1232）
 at com.sun.enterprise.v3.admin.AdminAdapter.doCommand（AdminAdapter.java:459）
 at com.sun.enterprise.v3.admin.AdminAdapter.service（ AdminAdapter.java:209）
 at com.sun.grizzly.tcp.http11.GrizzlyAdapter.service（GrizzlyAdapter.java:168）
 at com.sun.enterprise.v3.server.HK2Dispatcher.dispath（ HK2Dispatcher.java:117）
 at com.sun.enterprise.v3.services.impl.ContainerMapper.service（ContainerMapper.java:238）
 at com.sun.grizzly.http.ProcessorTask.invokeAdapter（ ProcessorTask.java:828）
 at com.sun.grizzly.http.ProcessorTask.doProcess（ProcessorTask.java:725）
 at com.sun.grizzly.http.ProcessorTask.process（ProcessorTask.java： 1019）
 at com.sun.grizzly.http.DefaultProtocolFilter.execute（DefaultProtocolFilter.java:225）
 at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter（DefaultProtocolChain.java:137)
 at com.sun.grizzly.DefaultProtocolChain.execute（DefaultProtocolChain.java:104）
 at com.sun.grizzly.DefaultProtocolChain.execute （DefaultProtocolChain.java:90）
 at com.sun.grizzly.http.HttpProtocolChain.execute（HttpProtocolChain.java:79）
 at com.sun.grizzly.ProtocolChainContextTask.doCall（ProtocolChainContextTask.java:54 ）
 at com.sun.grizzly.SelectionKeyContextTask.call（SelectionKeyContextTask.java:59）
 at com.sun.grizzly.ContextTask.run（ContextTask.java:71）
 at com。 sun.grizzly.util.AbstractThreadPool $ Worker.doWork（AbstractThreadPool.java:532）
 at com.sun.grizzly.util.AbstractThreadPool $ Worker.run（AbstractThreadPool.java:513）
 at java。 lang.Thread.run（Thread.java:662）
引起：java.lang.IllegalArgumentException：未找到Metamodel中密钥类[com.maze.model.Country]的[EntityType]  - 请验证使用特定的< class> com.maze.model.Country< / class>在persistence.xml中引用了[Entity]类属性或全局< exclude-unlisted-classes> false< / exclude-unlisted-classes>元件。 
 at org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl.entityEmbeddableManagedTypeNotFound（MetamodelImpl.java:174）
 at org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl.entity（MetamodelImpl。 java：194）
 at org.eclipse.persistence.internal.jpa.querydef.AbstractQueryImpl.from（AbstractQueryImpl.java:97）
 at com.maze.service.CountryService.readList（CountryService.java： 74）
 at com.maze.util.MazeConstants。< clinit>（MazeConstants.java:26）
  

国家实体：

  @Entity 
 @Table（name =country）
 public class Country实现Serializable {
 
 private static final long serialVersionUID = 4086034429815316972L; 
 
 @Id 
 private Integer id; 
 private String name; 
 private String大陆; 
 private整数人口; 
私人浮动面; 
 
 @OneToMany（mappedBy =country）
 private List< User>用户列表; 
  

现在该实体用于应用程序范围，实体抛出此错误，Glassfish无法完全启动。

第二次编辑：
根据当前行为，似乎Web容器启动并正常工作，直到第一次热部署。

解决方案

问题在于您的应用程序的热部署。旧的持久性单元在服务器中停留，因为您从未关闭旧工厂，因此在热部署后工厂仍然具有旧类，因此您将获得类转换错误。

您需要清除旧的持久性单元。关闭EntityManagerFactory应该这样做，例如在Servlet销毁回调中。

如果你使用托管持久性单元，那么一切都应该自动清理。问题在于你如何管理持久性单元。

我认为EclipseLink上也存在一个错误，你可能想投票给那个bug。 / p>

Entity:

@Entity
@Table(name="user_account")
public class UserAccount implements Serializable{
    private static final long serialVersionUID = -2606506548742732094L;

    @Id
    @GeneratedValue(strategy=GenerationType.TABLE)
    private Integer id;

persistence.xml

<persistence-unit name="Maze" transaction-type="RESOURCE_LOCAL">

    <exclude-unlisted-classes>false</exclude-unlisted-classes>
    <properties>
        <property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/>
        <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/mazedb"/>
        <property name="javax.persistence.jdbc.user" value="root"/>
        <property name="javax.persistence.jdbc.password" value="root"/>
    </properties>

</persistence-unit>

The error

WARNING: #{accountController.performLogin}: java.lang.IllegalArgumentException: No [EntityType] was found for the key class [com.maze.model.UserAccount] in the Metamodel - please verify that the [Entity] class was referenced in persistence.xml using a specific <class>com.maze.model.UserAccount</class> property or a global <exclude-unlisted-classes>false</exclude-unlisted-classes> element.
javax.faces.FacesException: #{accountController.performLogin}: java.lang.IllegalArgumentException: No [EntityType] was found for the key class [com.maze.model.UserAccount] in the Metamodel - please verify that the [Entity] class was referenced in persistence.xml using a specific <class>com.maze.model.UserAccount</class> property or a global <exclude-unlisted-classes>false</exclude-unlisted-classes> element.
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:118)
    at javax.faces.component.UICommand.broadcast(UICommand.java:315)
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
    at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174)
    at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828)
    at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725)
    at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019)
    at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
    at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
    at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
    at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
    at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
    at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
    at java.lang.Thread.run(Thread.java:662)

Behaviour Every time I restart the Web Container everything works just fine for a couple of minutes and than this error gets thrown. What am I missing?

EDIT :

Now I use an entity on the application scope as well and the same error occurs for the Country Entity. Both User and Country are defined as classes in the persistance.xml. Furthermore the exclude-unlisted-classes is set to false.

SEVERE: Critical error during deployment: 
java.lang.ExceptionInInitializerError
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at     sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39    )
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:355)
at java.lang.Class.newInstance(Class.java:308)
at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:188)
at com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:102)
at com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:409)
at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:269)
at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:256)
at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:255)
at org.apache.catalina.core.StandardContext.contextListenerStart(StandardContext.java:4750)
at com.sun.enterprise.web.WebModule.contextListenerStart(WebModule.java:550)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:5366)
at com.sun.enterprise.web.WebModule.start(WebModule.java:498)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:917)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:901)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:733)
at com.sun.enterprise.web.WebContainer.loadWebModule(WebContainer.java:2000)
at com.sun.enterprise.web.WebContainer.loadWebModule(WebContainer.java:1651)
at com.sun.enterprise.web.WebApplication.start(WebApplication.java:109)
at org.glassfish.internal.data.EngineRef.start(EngineRef.java:130)
at org.glassfish.internal.data.ModuleInfo.start(ModuleInfo.java:269)
at org.glassfish.internal.data.ApplicationInfo.start(ApplicationInfo.java:294)
at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:462)
at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:240)
at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:382)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$1.execute(CommandRunnerImpl.java:355)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:370)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1064)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$1200(CommandRunnerImpl.java:96)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1244)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1232)
at com.sun.enterprise.v3.admin.AdminAdapter.doCommand(AdminAdapter.java:459)
at com.sun.enterprise.v3.admin.AdminAdapter.service(AdminAdapter.java:209)
at com.sun.grizzly.tcp.http11.GrizzlyAdapter.service(GrizzlyAdapter.java:168)
at com.sun.enterprise.v3.server.HK2Dispatcher.dispath(HK2Dispatcher.java:117)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:238)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.IllegalArgumentException: No [EntityType] was found for the key class [com.maze.model.Country] in the Metamodel - please verify that the [Entity] class was referenced in persistence.xml using a specific <class>com.maze.model.Country</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.entity(MetamodelImpl.java:194)
at org.eclipse.persistence.internal.jpa.querydef.AbstractQueryImpl.from(AbstractQueryImpl.java:97)
at com.maze.service.CountryService.readList(CountryService.java:74)
at com.maze.util.MazeConstants.<clinit>(MazeConstants.java:26)

The Country entity:

@Entity
@Table(name = "country")
public class Country implements Serializable{

private static final long serialVersionUID = 4086034429815316972L;

@Id
private Integer id;
private String name;
private String continent;
private Integer population;
private Float surface;

@OneToMany(mappedBy = "country")
private List<User> userList;

Now that this entity is used on application scope and the Entity throws this error the Glassfish fails to start completely.

SECOND EDIT : Based on the current behavior it seems that the web container starts and works fine until the first hot deployment.

解决方案

The problem is your hot deploying of your application. The old persistence unit is sticking around in the server because you never closed the old factory, so after the hot deploy the factory still has the old classes, so you get the class cast error.

You need to clear out the old persistence unit. Closing the EntityManagerFactory should do this, such as in a Servlet destroy callback.

If you use a managed persistence unit, then everything should get cleaned up automatically. The issue is in how you are managing your persistence unit.

I think there is also a bug for this logged on EclipseLink, you might want to vote for that bug.

这篇关于没有为Metamodel中的密钥类[...]找到[EntityType]的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！