Spring整合Hiberante在weblogic报错

org.springframework.orm.hibernate3.HibernateQueryException: ClassNotFoundException: org.hibernate.hql.ast.HqlToken [from tw.com.synnex.competency.model.Duration where mtype = ? and ? between sdate and edate]; nested exception is org.hibernate.QueryException: ClassNotFoundException: org.hibernate.hql.ast.HqlToken [from tw.com.synnex.competency.model.Duration where mtype = ? and ? between sdate and edate]
at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:640)
at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:412)
at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:377)
at org.springframework.orm.hibernate3.HibernateTemplate.find(HibernateTemplate.java:840)
at tw.com.synnex.competency.dao.hibernate.DurationDAOHibernate.between(DurationDAOHibernate.java:30)
Truncated. see log file for complete stacktrace

这个问题如何解决呢，我没有在spring整合hibernate的xml里面配置hibernate，我是Hibernate单独有配置文件，然后在spring配置文件里面引用
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="configLocation" value= "classpath:config/hibernate.cfg.xml" />
</bean>

Hibernate中这样配置
<property name="show_sql">false</property>
     <!--
        <property name="hbm2ddl.auto">update</property>
    -->
        <property name="hibernate.dialect">org.hibernate.dialect.Oracle9Dialect</property>
<property name="hibernate.cache.provider_class">org.hibernate.cache.HashtableCacheProvider</property>
<property name="hibernate.cache.use_query_cache">true</property>