我需要两个持久性上下文来管理不同数据库中的实体。
我在 spring 4.1.4、hibernate 4.3.7 和 spring data 1.2 中使用基于 java 的配置。
基本上,CompanyApplicationContext 导入两个持久性上下文:PersistenceContext 和 SharedDbPersistenceContext。每个持久化上下文都有自己的数据源、事务管理器和实体管理器工厂。每个持久上下文的实体和 jpa 存储库存在于单独的包中,并在持久上下文类文件中提及。
我收到此错误:
Not an managed type: class com.company.shared.model.ClientSetting
完全异常(exception):
Caused by: java.lang.IllegalArgumentException: Not an managed type: class com.company.shared.model.ClientSetting
at org.hibernate.jpa.internal.metamodel.MetamodelImpl.managedType(MetamodelImpl.java:219)
我需要做哪些额外的配置才能使其工作?为什么每个上下文都没有正确扫描和注册实体和存储库?
主要应用环境:
package com.company.config;
@Configuration
@ComponentScan(basePackages
= "com.company"
)
@Import({
PersistenceContext.class,
SharedDbPersistenceContext.class})
public class CompanyApplicationContext extends WebMvcConfigurerAdapter {
}
持久性上下文:
package com.company.config;
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
basePackages = {"com.company.todo.repository"})
public class PersistenceContext {
@Resource
private Environment environment;
@Bean
public DataSource dataSource() {
BoneCPDataSource dataSource = new BoneCPDataSource();
//init data source
return dataSource;
}
@Bean
public JpaTransactionManager transactionManager() {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(entityManagerFactory().getObject());
return transactionManager;
}
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
entityManagerFactoryBean.setDataSource(dataSource());
entityManagerFactoryBean.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
entityManagerFactoryBean.setPackagesToScan("com.company.todo.model");
Properties jpaProperties = new Properties();
//init jpa properties
entityManagerFactoryBean.setJpaProperties(jpaProperties);
return entityManagerFactoryBean;
}
}
共享数据库持久化上下文:
package com.company.config;
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
basePackages = {"com.company.shared.repository"})
public class SharedDbPersistenceContext {
@Resource
private Environment environment;
@Bean
public DataSource sharedDataSource() {
//init and return data source
}
@Bean
public JpaTransactionManager sharedDbTransactionManager() {
//init transaction manager
}
@Bean
public LocalContainerEntityManagerFactoryBean sharedEntityManagerFactory() {
LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
entityManagerFactoryBean.setDataSource(sharedDataSource());
entityManagerFactoryBean.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
entityManagerFactoryBean.setPackagesToScan("com.company.shared.model");
Properties jpaProperties = new Properties();
//init jpaProperties
entityManagerFactoryBean.setJpaProperties(jpaProperties);
return entityManagerFactoryBean;
}
}
存储库:
package com.company.shared.repository;
@Repository
public interface ClientSettingsRepository extends JpaRepository<ClientSetting, Integer> {}
实体:
package com.company.shared.model;
@Entity
public class ClientSetting implements Serializable {
//props
}
服务:
package com.company.shared.service;
@Service
public class DataSourceServiceImpl implements DataSourceService{
@Autowired
ClientSettingsRepository clientSettingsRepository;
@Override
public List<ClientSetting> findClientDataSourceSettings() {
return clientSettingsRepository.findClientDataSourceSettings();
}
}
最佳答案
原来我失踪了
entityManagerFactoryRef 和 transactionManagerRef 在@EnableJpaRepositories 注释中
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
basePackages = {"com.company.todo.repository"},
entityManagerFactoryRef = "mainEntityManagerFactory",
transactionManagerRef = "entityManagerFactory")
public class PersistenceContext {}
SharedDbPersistenceContext :
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
basePackages = {"com.company.shared.repository"},
entityManagerFactoryRef = "sharedEntityManagerFactory",
transactionManagerRef = "sharedDbTransactionManager")
public class SharedDbPersistenceContext {}
工作正常。
关于hibernate - 如何在 Spring Data JPA 中使用多个 JPA 持久性上下文?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/27792691/