使用Spring时如何注入多个JPA EntityManager（持久性单元）

的配置

EntityManageFactory

LocalContainerEntityManagerFactoryBean

@Bean(name = "readingEntityManagerFactory")public EntityManagerFactory readingEntityManagerFactory() {    LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();    em.setPersistenceUnitName("persistence.reading");    em.setDataSource(dataSource());    em.setPackagesToScan("com.company");    em.setJpaVendorAdapter(new HibernateJpaVendorAdapter());    em.afterPropertiesSet();    return em.getObject();}

同样，它

JpaTransactionManager

@Bean(name = "readingTransactionManager")public PlatformTransactionManager readingTransactionManager(){    JpaTransactionManager transactionManager = new JpaTransactionManager();    transactionManager.setEntityManagerFactory(readingEntityManagerFactory());    return transactionManager;}

对于读取和写入EntityManager配置，您都需要执行相同的操作。