Hibernate常见问题

超、凢脫俗 2022-07-24 11:04 243阅读 0赞

### 问题1，hql条件查询报错 ###

执行Query session.createQuery(hql) 报错误直接跳到finally

### 解决方案 ###

加入

<prop key="hibernate.query.factory_class">org.hibernate.hql.classic.ClassicQueryTranslatorFactory</prop>

节点

### 加入之后再次报错 ###

org.hibernate.HibernateException: could not instantiate QueryTranslatorFactory: org.hibernate.hql.classic.ClassicQueryTransactionFactory

### 解决方案 ###

### 修改成以下 ###

<property name="hibernate.query.factory_class">org.hibernate.hql.internal.classic.ClassicQueryTranslatorFactory</property>

### 参考链接 ###

[Hibernate 问题,在执行Query session.createQuery(hql) 报错误直接跳到finally - morning99的专栏 - 博客频道 - CSDN.NET][Hibernate _Query session.createQuery_hql_ _finally - morning99_ - _ - CSDN.NET]

[org.hibernate.HibernateException: could not instantiate QueryTranslatorFactory: org.hibernate.hql.classic.ClassicQueryTransactionFactory - Stack Overflow][org.hibernate.HibernateException_ could not instantiate QueryTranslatorFactory_ org.hibernate.hql.classic.ClassicQueryTransactionFactory - Stack Overflow]

### hql条件查询 ###

### 查询最后一条数据 ###

public RunTimePO getLast(String sin)
        {
    
             Session session = sessionFactory.openSession();
             //System.out.println("22222222222222");
             String hql="from RunTimePO where SIN=? order by id desc";   
             //String hql="from RunTimePO where SIN=?";
              Query query = session.createQuery(hql); 
              query.setString(0, sin);
    
              query.setMaxResults(1);
              //query.setInteger(0, 139);  
              //int id=(Integer) query.uniqueResult();
    
             RunTimePO rp=(RunTimePO) query.uniqueResult();  
    
             if(rp!=null)
             {
             System.out.println("id==="+rp.getId());
             }
                session.close();
                return rp; 
        }

### 时间段查询 ###

public List<RunTimePO> getBetweenSeg(String sin,String startTime,String endTime)
        {
            Session session = sessionFactory.openSession();
    
             String hql="from RunTimePO as u where SIN=? and u.date between ? and ?"; 
             Query query = session.createQuery(hql);
             query.setString(0, sin);
             query.setString(1, startTime);
             query.setString(2, endTime);
             System.out.println(query.list().size());
             List<RunTimePO> runTimeList=query.list();
             return runTimeList;
        }

### 完成 ###

[Hibernate _Query session.createQuery_hql_ _finally - morning99_ - _ - CSDN.NET]: http://blog.csdn.net/morning99/article/details/17807077
[org.hibernate.HibernateException_ could not instantiate QueryTranslatorFactory_ org.hibernate.hql.classic.ClassicQueryTransactionFactory - Stack Overflow]: http://stackoverflow.com/questions/5582478/org-hibernate-hibernateexception-could-not-instantiate-querytranslatorfactory