spring一个问题非常感谢

Question

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd"><beans>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName">
<value>com.microsoft.jdbc.sqlserver.SQLServerDriver</value>
</property>
<property name="url">
<value>jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=pubs</value>
</property>
<property name="username">
<value>sa</value>
</property>
<property name="password">
<value>sa</value>
</property>
</bean>

<bean id="sessionFactory" class="org.springframework.orm.hibernate.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource"/>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</prop>
</props>
</property>
 <property name="mappingResources">
<list>
<value>hi/Aaa.hbm.xml</value>
</list>
</property>
</bean>

<bean id="studentManager" class="net.bromon.spring.examer.student.StudentManager">
<property name="sessionFactory">
<ref bean="sessionFactory"/>
</property> 
</bean> 
</beans>这是我的spring配置问题,为什么我连上网就可以成功,如果不把网线断掉他就会说映射错误 数据库在本地