registered the jdbc driver [oracle.jdbc.driverOracleDriver] but failed to unregister id ..看图

在Spring 配置文件中加入如下代码并将其注入到DAO类中后发生错误<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource"/>
</property>
<property name="mappingResources">
<list>
<value>entity/User.hbm.xml</value>
</list>
</property>
</bean>

相关了解……