如何在HibernateJpaAutoConfiguration中指定packagesToScan？

Question

我HibernateJpaAutoConfiguration在Spring单元测试中直接使用.在EntityManager配置Hibernate时,不会扫描任何实体.

例外

10:29:36.377 [main] INFO  o.s.b.f.a.AutowiredAnnotationBeanPostProcessor - JSR-330 javax.inject.Inject' annotation found and supported for autowiring
10:29:36.505 [main] TRACE o.s.b.b.PropertiesConfigurationFactory - Property Sources: org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor$FlatPropertySources@65f8f5ae
10:29:36.638 [main] TRACE o.s.b.b.PropertiesConfigurationFactory - Property Sources: org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor$FlatPropertySources@65f8f5ae
10:29:36.716 [main] TRACE o.s.b.b.PropertiesConfigurationFactory - Property Sources: org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor$FlatPropertySources@65f8f5ae
10:29:36.818 [main] INFO  o.s.o.j.LocalContainerEntityManagerFactoryBean - Building JPA container EntityManagerFactory for persistence unit 'default'
10:29:36.842 [main] INFO  o.h.jpa.internal.util.LogHelper - HHH000204: Processing PersistenceUnitInfo [
    name: default
    ...]
10:29:36.979 [main] INFO  org.hibernate.Version - HHH000412: Hibernate Core {4.3.6.Final}
10:29:36.980 [main] INFO  org.hibernate.cfg.Environment - HHH000206: hibernate.properties not found
10:29:36.982 [main] INFO  org.hibernate.cfg.Environment - HHH000021: Bytecode provider name : javassist
10:29:37.234 [main] INFO  o.h.annotations.common.Version - HCANN000001: Hibernate Commons Annotations {4.0.4.Final}
10:29:37.599 [main] INFO  org.hibernate.dialect.Dialect - HHH000400: Using dialect: org.hibernate.dialect.PostgreSQL9Dialect
10:29:37.608 [main] INFO  o.h.e.j.internal.LobCreatorBuilder - HHH000424: Disabling contextual LOB creation as createClob() method threw error : java.lang.reflect.InvocationTargetException
10:29:37.648 [main] INFO  o.h.h.i.a.ASTQueryTranslatorFactory - HHH000397: Using ASTQueryTranslatorFactory
10:29:37.742 [main] INFO  o.h.tool.hbm2ddl.SchemaUpdate - HHH000228: Running hbm2ddl schema update
10:29:37.742 [main] INFO  o.h.tool.hbm2ddl.SchemaUpdate - HHH000102: Fetching database metadata
10:29:37.744 [main] INFO  o.h.tool.hbm2ddl.SchemaUpdate - HHH000396: Updating schema
10:29:37.745 [main] INFO  o.h.tool.hbm2ddl.SchemaUpdate - HHH000232: Schema update complete

我的解决方法是创建自己LocalContainerEntityManagerFactoryBean的如下:

    final LocalContainerEntityManagerFactoryBean factoryBean = new LocalContainerEntityManagerFactoryBean();
    factoryBean.setPersistenceUnitName("buzzPU"); // persistence.xml
    factoryBean.setDataSource(dataSource);
    factoryBean.setJpaVendorAdapter(jpaVendorAdapter);
    factoryBean.setPersistenceXmlLocation("classpath*:META-INF/donotparsepersistence.xml");
    factoryBean.setPackagesToScan("org.soluvas.buzz.core.jpa");

请注意,我不使用 META-INF/persistence.xml

Answer 1

从Spring Boot参考...

62.4从Spring配置中分离@Entity定义

Spring Boot会根据找到的@EnableAutoConfiguration尝试猜测@Entity定义的位置.要获得更多控制,您可以使用@EntityScan注释,例如

@Configuration
@EnableAutoConfiguration
@EntityScan(basePackageClasses=City.class)
public class Application {
   //...
}

Answer 2

使用以下内容也有助于:

@EntityScan("org.soluvas.buzz.core.jpa")

它是'basePackages'属性的别名,用于配置要扫描带注释实体的包列表.

此批注提供了手动设置LocalContainerEntityManagerFactoryBean的替代方法.setPackagesToScan(String ...),如果要以类型安全的方式配置实体扫描,或者如果自动配置 LocalContainerEntityManagerFactoryBean,则特别有用 .