lArgumentException:在元模型中找不到键类[Model.Testtable]的[EntityType]-请验证persistence.xml中是否使用特定的Model.Testtable属性或全局false元素引用了[Entity]类。 [EL Warning]：元模型：2019-08-08 15:25:30.841--元模型[EntityType]类型的集合为空。在实体搜索JavaSE和一些JavaEE容器管理的持久化单元时，可能找不到模型类。请验证persistence.xml中是否使用元素或全局false元素引用了您的实体类。对[class Model.Testtable]的查找将返回null。 位于org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl.EntityEmbeddebleManagedTypeNotFound（MetamodelImpl.java:173） 位于org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl.entity（MetamodelImpl.java:193） 位于tesyapp.tesyapp.main（tesyapp.java:45） C:\Users\e.kriezis\AppData\Local\NetBeans\Cache\11.1\executor snippets\run.xml:111:执行此行时发生以下错误： C:\Users\e.kriezis\AppData\Local\NetBeans\Cache\11.1\executor snippets\run.xml:68:Java返回：1 生成失败（总时间：1秒）

我如何克服这个异常并将openjdk与netbens 11结合使用，以便用jdk8升级用netbeans 8编写的激动人心的java项目？它的可能重复之处在于主键值的自动生成问题，而不是openjdk 9及以上版本！！！！可能的重复是关于主键值的自动生成问题，而不是openJDK 9和更高版本！！！！

run:

Creating the Factory...
[EL Info]: 2019-08-08 15:25:30.61--ServerSession(1477657879)--EclipseLink, version: Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd
[EL Info]: connection: 2019-08-08 15:25:30.8--ServerSession(1477657879)--file:/C:/Users/e.kriezis/Documents/NetBeansProjects/TestApp/build/classes/_TestAppPU login successful
[EL Warning]: metamodel: 2019-08-08 15:25:30.82--The collection of metamodel types is empty. Model classes may not have been found during entity search for Java SE and some Java EE container managed persistence units.  Please verify that your entity classes are referenced in persistence.xml using either <class> elements or a global <exclude-unlisted-classes>false</exclude-unlisted-classes> element
Exception in thread "main" java.lang.IllegalArgumentException: No [EntityType] was found for the key class [Model.Testtable] in the Metamodel - please verify that the [Entity] class was referenced in persistence.xml using a specific <class>Model.Testtable</class> property or a global <exclude-unlisted-classes>false</exclude-unlisted-classes> element.
[EL Warning]: metamodel: 2019-08-08 15:25:30.841--The collection of metamodel [EntityType] types is empty. Model classes may not have been found during entity search for Java SE and some Java EE container managed persistence units.  Please verify that your entity classes are referenced in persistence.xml using either <class> elements or a global <exclude-unlisted-classes>false</exclude-unlisted-classes> element.  The lookup on [class Model.Testtable] will return null.
    at org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl.entityEmbeddableManagedTypeNotFound(MetamodelImpl.java:173)
    at org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl.entity(MetamodelImpl.java:193)
    at tesyapp.TesyApp.main(TesyApp.java:45)
C:\Users\e.kriezis\AppData\Local\NetBeans\Cache\11.1\executor-snippets\run.xml:111: The following error occurred while executing this line:
C:\Users\e.kriezis\AppData\Local\NetBeans\Cache\11.1\executor-snippets\run.xml:68: Java returned: 1
BUILD FAILED (total time: 1 second)