最近刚接触spring，有个spring的问题想请教一下，请多指教。
<bean name="User" class="action.UserAction">
<property name="face" ref="service" />
<property name="dao" ref="TestDao" />
<property name="bface" ref="bservice" />
<!-- <property name="bdao" ref="BaseInfoDao" /> -->
</bean>
注释<property name="bdao" ref="BaseInfoDao" />可以打开网页，
否则，tomcat显示404，找不到所请求的资源

这是applicationContext.xml配置：
<bean id="Test" class="domain.Test" />
<bean id="BaseInfo" class="domain.BaseInfo" />
<bean name="TestDao" class="dao.TestDaoImpl" />
<bean name="BaseInfoDao" class="dao.BaseInfoDaoImpl" />
<bean name="service" class="service.LoginService" >
<property name="t" ref="Test"></property>
</bean>
<bean name="bservice" class="service.BaseInfoService" >
<property name="t" ref="BaseInfo"></property>
</bean>
<bean name="User" class="action.UserAction">
<property name="face" ref="service" />
<property name="dao" ref="TestDao" />
<property name="bface" ref="bservice" />
<property name="bdao" ref="BaseInfoDao" />
</bean>