SSH整合开发之异常：No Session found for current thread

一、异常

org.hibernate.HibernateException: No Session found for current thread
at org.springframework.orm.hibernate4.SpringSessionContext.currentSession(SpringSessionContext.java:106)
at org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:1014)
at cn.lzf.shopping.dao.BaseDaoHibernate.find(BaseDaoHibernate.java:62)
at cn.lzf.shopping.dao.BaseDaoHibernate.findAll(BaseDaoHibernate.java:47)
at cn.lzf.shopping.service.GoodServiceImpl.findAll(GoodServiceImpl.java:24)
at cn.lzf.shopping.action.GoodAction.getAllGoods(GoodAction.java:42)

二、异常分析

这是在用Spring整合Hibernate时出现的问题，在DAO内部是通过下列方式来存取数据的：

public class BaseDaoHibernate<T> implements BaseDao<T>{

    private SessionFactory sessionFactory;

    @SuppressWarnings("unchecked")
    @Override
    public T get(Class<T> entityClazz, Serializable id) {
        return (T) getSessionFactory().getCurrentSession().get(entityClazz, id);

    //省略部分代码
}

里面没有涉及到事务有关的代码，所以我们还需要对事务进行声明：

    <tx:advice
        id="txAdvice"
        transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method
                name="get*"
                read-only="true" />
            <tx:method
                name="*"
                isolation="DEFAULT"
                propagation="REQUIRED"
                timeout="5" />
        tx:attributes>
    tx:advice>

    
    <aop:config>
        <aop:pointcut
            expression="execution(* cn.lzf.shopping.service.*.*(..))"
            id="myPointcut" />
        <aop:advisor
            advice-ref="txAdvice"
            pointcut-ref="myPointcut" />
    aop:config>