將 entity 單獨放在一個項目中，打包成 abc.jar 放到web項目中，提示 錯誤
aused by: java.lang.IllegalArgumentException: Not an entity: class com.classify.model.Classify
at org.hibernate.ejb.metamodel.MetamodelImpl.entity(MetamodelImpl.java:179)
at org.springframework.data.jpa.repository.support.JpaMetamodelEntityInformation.<init>(JpaMetamodelEntityInformation.java:52)
at org.springframework.data.jpa.repository.support.JpaEntityInformationSupport.getMetadata(JpaEntityInformationSupport.java:61)
at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getEntityInformation(JpaRepositoryFactory.java:145)
at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetRepository(JpaRepositoryFactory.java:83)
at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetRepository(JpaRepositoryFactory.java:66)
at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:146)
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.getObject(RepositoryFactoryBeanSupport.java:120)
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.getObject(RepositoryFactoryBeanSupport.java:39)
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:142)
... 65 more
解決方法
參考：
https://forum.hibernate.org/viewtopic.php?f=1&t=1008811
Finally found out how to do this.. Got some help over at stackoverflow:
http://stackoverflow.com/questions/5064 ... wo-webapps
Seems there are two ways to solve it:
1) Specify the entity jar file in persistence.xml: <jar-file>common.jar</jar-file>
2) List all entities by class name in persistence.xml using <class>com.mycompany.model.Locale</class>
We
ended up using the second approach. I couldn't get the first approach
working when deploying with eclipse, and it would also require us to
update the persistence.xml each time version numbers change (since we
build with maven). Any solutions to these problems?
Anyway, so happy we finally figured this one out.
-Anders