hibernate4整合spring3 时出现 nested exception is java.lang.NoClassDefFoundError:org/hibernate/engine/SessionFactoryImplementor 异常
原因：3中这样配置
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory" /> <property name="nestedTransactionAllowed" value="true" /> </bean>
原因：4中该这样配置
<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <property name="dataSource" ref="dataSource" /> <property name="sessionFactory" ref="sessionFactory" /> </bean>
nested exception is java.lang.NoClassDefFoundError:org/hibernate/engine/SessionFactoryImplementor
原文：http://www.cnblogs.com/Mr-Clint/p/3580287.html
