Question

我正在使用带有弹簧数据jpa的spring boot，我是持久化实体，具有自动生成和一个唯一字段如下

@Entity
@Table(name="ENTITY")
public class Entity {

    @Id @GeneratedValue(strategy=GenerationType.AUTO) 
    private Long entityId;

    @Column(name="data",unique=true)
    private Long data;
}

因此，在保存具有null entityId的实体（因为它是自动生成的）和重复的数据字段时，它会显示

com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry 'DL783E6D8D' for key 'UK_htwi98cnnh794ddgu2dic3nm1'

使用try catch块处理，如下所示

try{

//Save operation with null entityId
saveEntity(entity);
}catch(DataIntegrityViolationException)
{
   //Here I am fetching other entity 
}

saveEntity函数使用spring @Transaction并回滚DataIntegrityViolationException

@Transactional(rollbackFor={DataIntegrityViolationException.class})
public void saveEntity(Entity entity)
{
    entityRepository.save(entity);
}

他们整个设置工作正常，直到我迁移到hibernate 5.0.9，迁移后它给出了错误

org.hibernate.AssertionFailure - HHH000099: an assertion failure occured (this may indicate a bug in Hibernate, but is more likely due to unsafe use of the session): org.hibernate.AssertionFailure: null id in Entity entry (don't flush the Session after an exception occurs)

Spring数据jpa在异常后不会刷新会话＆＃39;从4.3迁移到hibernate 5.x后发生

0 个答案: