更改applicationContext-hibernate.xml文件為

<beans>
    <!-- Hibernate sessionFactory -->
    <bean id="sessionFactory" class="org.s        <property name="dataSource"><ref bean="dataSource"/></property>
        <property name="mappingResources">
            <list>
                <value>model/Role.hbm.xml</value>
                  ......
               <value>model/policy/Policycontent.hbm.xml</value>
            </list>
        </property>
       
        <property name="lobHandler"><ref bean="OracleLobHandler"/></property>
       
        <property name="hibernateProperties">
           <props> 
               <prop key="hibernate.dialect">net.sf.hibernate.dialect.Oracle9Dialect</prop>
               <prop key="hibernate.show_sql">true</prop>
               <prop key="hibernate.jdbc.batch_size">15</prop>
           </props>
        </property>
    </bean>

    <bean id="oracleLobHandler" class="org.springframework.jdbc.support.lob.OracleLobHandler" lazy-init="true">
        <property name="nativeJdbcExtractor"><ref local="nativeJdbcExtractor"/></property>
    </bean>

    <bean id="nativeJdbcExtractor" class="org.springframework.jdbc.support.nativejdbc.SimpleNativeJdbcExtractor">
    </bean>

    <!-- Transaction manager for a single Hibernate SessionFactory (alternative to JTA) -->
    <bean id="transactionManager" class="org.springframework.orm.hibernate.HibernateTransactionManager">