Question

当我尝试从表中获取实体并尝试更新同一实体时，它会发出错误。

我的示例代码：

public String updateProfile(Hospital hospital)
    {
        System.out.println("here");
        SessionFactory sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();
        Session session=sessionFactory.openSession();
        try{
        Transaction t=session.beginTransaction();
        HttpSession sess=ServletActionContext.getRequest().getSession(false);
        Long hospitalId=(Long)sess.getAttribute("pid");
        Hospital hos = (Hospital)session.get(Hospital.class, hospitalId); 

        hos.setAbout(hospital.getAbout());
        hos.setHospitalName(hospital.getHospitalName());
        session.update(hos); 
        session.flush();

        t.commit();
        }
        catch(HibernateException e)
        {
            e.printStackTrace();
        }
        finally{
            session.close();
        }
        return "success";
    }

我得到的错误是

org.hibernate.exception.LockTimeoutException：无法执行语句在org.hibernate.dialect.MySQLDialect $ 1.convert（MySQLDialect.java:447）在org.hibernate.exception.internal.StandardSQLExceptionConverter.convert（StandardSQLExceptionConverter.java:49）在org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert（SqlExceptionHelper.java:126）在org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert（SqlExceptionHelper.java:112） at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate（ResultSetReturnImpl.java:211）在org.hibernate.engine.jdbc.batch.internal.NonBatchingBatch.addToBatch（NonBatchingBatch.java:62）在org.hibernate.persister.entity.AbstractEntityPersister.update（AbstractEntityPersister.java:3281）在org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert（AbstractEntityPersister.java:3183）在org.hibernate.persister.entity.AbstractEntityPersister.update（AbstractEntityPersister.java:3525）在org.hibernate.action.internal.EntityUpdateAction.execute（EntityUpdateAction.java:159）在org.hibernate.engine.spi.ActionQueue.executeActions（ActionQueue.java:465）在org.hibernate.engine.spi.ActionQueue.executeActions（ActionQueue.java:351）在org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions（AbstractFlushingEventListener.java:350）在org.hibernate.event.internal.DefaultFlushEventListener.onFlush（DefaultFlushEventListener.java:56）在org.hibernate.internal.SessionImpl.flush（SessionImpl.java:1258）

请帮忙。 hHospital对象中的关系是一对多。

mysql中的hibernate锁异常

0 个答案: