存在外键时,Spring事务同步器在事务结束前关闭JPA实体管理器
我有一个spring应用程序,它使用JTA(用同样的问题尝试了atomikos和bitronix)+JPA(Hibernate),我遇到了以下问题 在我尝试使用外键之前,一切都会正常工作(例如,一对一的关系,cascade不会产生任何影响) 当我这样做时,spring事务同步器会在事务完成之前强制关闭实体管理器,当事务管理器尝试提交时,我只会得到:存在外键时,Spring事务同步器在事务结束前关闭JPA实体管理器,spring,hibernate,jta,spring-transactions,spring-orm,Spring,Hibernate,Jta,Spring Transactions,Spring Orm,我有一个spring应用程序,它使用JTA(用同样的问题尝试了atomikos和bitronix)+JPA(Hibernate),我遇到了以下问题 在我尝试使用外键之前,一切都会正常工作(例如,一对一的关系,cascade不会产生任何影响) 当我这样做时,spring事务同步器会在事务完成之前强制关闭实体管理器,当事务管理器尝试提交时,我只会得到: ERROR: HHH000346: Error during managed flush [Session/EntityManager is clo
ERROR: HHH000346: Error during managed flush [Session/EntityManager is closed]
没有其他日志表明spring提前关闭实体管理器的原因
我发现,如果我使用EntityEnabler.flush(),大多数情况下都能解决问题,但不是所有情况
我有一个项目,其中的单元测试复制了这个问题:(单元测试是针对单机版/atomikos artemis hibernate的测试
这里是我使用的一个摘录
@Bean(initMethod = "init", destroyMethod = "shutdownForce")
public UserTransactionServiceImp userTransactionService() {
Properties p = new Properties();
p.setProperty("com.atomikos.icatch.service", "com.atomikos.icatch.standalone.UserTransactionServiceFactory");
p.setProperty("com.atomikos.icatch.default_jta_timeout","30000");
return new UserTransactionServiceImp(p);
}
@Bean(initMethod = "init", destroyMethod = "close")
@DependsOn("userTransactionService")
public UserTransactionManager UserTransactionManager() {
UserTransactionManager userTransactionManager = new UserTransactionManager();
userTransactionManager.setForceShutdown(false);
userTransactionManager.setStartupTransactionService(false);
return userTransactionManager;
}
@Bean
@DependsOn("userTransactionService")
public UserTransactionImp userTransactionImp() throws SystemException {
UserTransactionImp userTransactionImp = new UserTransactionImp();
return userTransactionImp;
}
@Bean
@DependsOn("userTransactionService")
public JtaTransactionManager jtaTransactionManager() {
return new JtaTransactionManager(UserTransactionManager(), UserTransactionManager());
}
@Bean
public JPAParams jpaParams() {
Properties p = new Properties();
p.setProperty("hibernate.connection.handling_mode", "DELAYED_ACQUISITION_AND_RELEASE_AFTER_TRANSACTION");
p.setProperty("hibernate.current_session_context_class", "jta");
p.setProperty("hibernate.transaction.jta.platform", AtomikosPlatform.class.getName());
return new JPAParams(p);
}
@Bean
public LocalContainerEntityManagerFactoryBean entityManager() {
LocalContainerEntityManagerFactoryBean entityManager = new LocalContainerEntityManagerFactoryBean();
if (config.isJtaDatasource()) {
entityManager.setJtaDataSource(config.getDataSource());
} else {
entityManager.setDataSource(config.getDataSource());
}
Properties p = new Properties();
p.putAll(config.getJpaProperties());
if (jpaParamsList != null) {
for (JPAParams jpaParams : jpaParamsList) {
p.putAll(jpaParams.getProperties());
}
}
entityManager.setJpaProperties(p);
entityManager.setPackagesToScan(config.getPackageToScan());
entityManager.setPersistenceProvider(new HibernatePersistenceProvider());
return entityManager;
}
@Entity
public class TestObj {
@Id
private int id;
@OneToOne
private TestObj2 testObj2;
public TestObj() {
}
public TestObj(int id) {
this.id = id;
}
public TestObj(int id, TestObj2 testObj2) {
this.id = id;
this.testObj2 = testObj2;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
}
@Entity
public class TestObj2 {
@Id
private int id;
public TestObj2() {
}
public TestObj2(int id) {
this.id = id;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
}
public void testDb() {
tx.execute(status -> {
entityManager.persist(new TestObj3(0));
TestObj2 o2 = new TestObj2(0);
entityManager.persist(o2);
TestObj o1 = new TestObj(0, o2);
entityManager.persist(o1);
// If i flush the problem disapears
// entityManager.flush();
return null;
});
}
Spring4.3.2和Hibernate5.2.2也有类似的问题
将hibernate降级到5.1.1解决了我们的问题在spring 4.3.2和hibernate 5.2.2中仍然存在一些问题。ex:这确实解决了问题。你会知道这个特定的问题是hibernate中的错误还是spring中的错误吗?我认为这并不是一个真正的解决方案,只是一个变通方法。我没有研究细节,但是Hibernate5.2在为6.0做准备时包含了一些突破性的变化