Question

我有以下LocalContainerEntityManagerFactoryBean

@Bean
public static LocalContainerEntityManagerFactoryBean fakeEntityManagerFactory(){
    LocalContainerEntityManagerFactoryBean bean = new LocalContainerEntityManagerFactoryBean();
    MergingPersistenceUnitManager persistenceManager = new MergingPersistenceUnitManager();
    persistenceManager.setPersistenceXmlLocation("classpath*:META-INF/fake/persistence.xml");
    bean.setPersistenceUnitManager(persistenceManager);
    bean.setPersistenceUnitName("fake");
    HibernateJpaVendorAdapter jpaVendorAdapter= new HibernateJpaVendorAdapter();
    jpaVendorAdapter.setGenerateDdl(false);
    bean.setJpaVendorAdapter(jpaVendorAdapter);
    return bean;
}

Persistence.xml包含以下内容：

<persistence-unit name="fake" transaction-type="JTA">
    <provider>org.hibernate.ejb.HibernatePersistence</provider>
    <jta-data-source>fake</jta-data-source>
    <shared-cache-mode>ENABLE_SELECTIVE</shared-cache-mode>
</persistence-unit>

然而，当它设置persistenceUnitName（bean.setPersistenceUnitName（＆＃34; fake＆＃34;）;）

我得到了例外

  java.lang.IllegalArgumentException: No persistence unit with name 'fake' found

我相信这是因为bean在设置时还没有加载持久性单元。

如何解决这个问题？

修改

我读到.setPersistenceUnitName如果设置persistenceUnitManager则不应该使用:(取自官方文档）

NOTE: Only applied if no external PersistenceUnitManager specified.

但是，如果我将其删除，则会产生：java.lang.IllegalStateException: No persistence units parsed from {classpath*:META-INF/fake/persistence.xml}

Answer 1

我对MergingPersistenceUnitManager有类似的问题。我的解决方案适用于Spring Boot 2.0.3

    persistenceManager.preparePersistenceUnitInfos();
    persistenceManager.setDefaultDataSource(dataSource);

如果未设置dataSource，则无法开始交易。您无需在代码中设置persistentUnitName。

LocalContainerEntityManagerFactoryBean实例化未找到persistenceunit

1 个答案: