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我有下面的類春數據錯誤
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:my-ctx.xml"})
public class UserTests {
@Inject
private ApplicationContext applicationContext;
private UserRepository getUserRepository() {
return (UserRepository)applicationContext.getBean("userRepository", CrudRepository.class);
}
@Test
public void someTest() {
User user = new User();
user.setName("John Doe");
getUserRepository().save(user);
}
}
運行測試，我得到以下錯誤
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userRepository': FactoryBean threw exception on object creation; nested exception is java.lang.NullPointerException
...
根本原因
org.datanucleus.api.jpa.metamodel.SingularAttributeImpl.isVersion(SingularAttributeImpl.java:79)
org.springframework.data.jpa.repository.support.JpaMetamodelEntityInformation.findVersionAttribute(JpaMetamodelEntityInformation.java:92)
org.springframework.data.jpa.repository.support.JpaMetamodelEntityInformation.<init>(JpaMetamodelEntityInformation.java:78)
org.springframework.data.jpa.repository.support.JpaEntityInformationSupport.getMetadata(JpaEntityInformationSupport.java:65)
org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getEntityInformation(JpaRepositoryFactory.java:146)
org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetRepository(JpaRepositoryFactory.java:84)
org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetRepository(JpaRepositoryFactory.java:67)
...
其中VersionMetaData vermd = mmd.getAbstractClassMetaData().getVersionMetaData();爲空。
這是一個錯誤？
我知道我可以加上類似@Inject UserRepository userRepository;的東西，但考慮到Spring Data的工作方式，這兩個應該有相同的結果，對不對？無論如何，結果將是同樣的錯誤。
我使用Spring數據1.4.1，DataNucleus 3.3.2，Spring 3.2.4。