報錯資訊：

Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.itcast.jk.dao.BaseDao]: Specified class is an interface

解決方法：重新拷貝application-dao.xml

其實是要把：      http://www.springframework.org/schema/beans/spring-beans-3.0.xsd    
    http://www.springframework.org/schema/aop    
 

    http://www.springframework.org/schema/aop/spring-aop-3.0.xsd    
    http://www.springframework.org/schema/tx    
    http://www.springframework.org/schema/tx/spring-tx-3.0.xsd    
    http://www.springframework.org/schema/context    
    http://www.springframework.org/schema/context/spring-context-3.0.xsd"> 中的-3.0去掉這很重要
 

    還有就是注意
        //這裡是要引入實現類，不是介面，易錯
    <bean id="deptService" class="cn.itcast.jk.service.impl.DeptServiceImpl">
        <property name="baseDao" ref="baseDao"></property>
    </bean>