Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.itcast.j

报错信息：

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

解决方法：重新拷贝application-dao.xml

其实是要把：      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去掉这很重要
    还有就是注意
        //这里是要引入实现类，不是接口，易错
    "deptService" class="cn.itcast.jk.service.impl.DeptServiceImpl">
        "baseDao" ref="baseDao">