spring packagesToScan问题

Question

<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="namingStrategy">
<bean class="org.hibernate.cfg.ImprovedNamingStrategy" />
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.dialect">${hibernate.dialect}</prop> </props>
</property>
<property name="packagesToScan">
<list>
<value>ya.tou.test.dao.*</value>
</list>
</property>
</bean>
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in file [F:\mvenspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\yaTou\WEB-INF\classes\applicationContext.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'packagesToScan' of bean class [org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean]: Bean property 'packagesToScan' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1279)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1010)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:472)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
at java.security.AccessController.doPrivileged(Native Method)

Answer 1

<property name="packagesToScan"> 
<list> 
<value>ya.tou.test.dao.* </value> 
</list>
这样写的话，spring只会扫描dao下面的包。如果里面放类的话。是扫不到的。