关于使用SSH框架写的项目没有网络会报错的问题

以一个注册登录的简单项目为例: 

当你的Sping中的配置文件为以下的形式时

applicationContext.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd"> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/ssh-test" />
<property name="username" value="root" />
<property name="password" value="123" />
</bean>

<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource" />
</property>

<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>

<property name="mappingResources">
<list>
<value>entity/User.hbm.xml</value>
</list>
</property>
</bean>

<bean id="user_dao" class="dao.impl.UserDaoImpl">
<property name="sessionFactory">
<ref bean="sessionFactory" />
</property>
</bean>

<bean id="user_service" class="service.impl.UserServiceImpl">
<property name="ud">
<ref bean="user_dao" />
</property>
</bean>

<bean id="user" class="action.UserAction" scope="prototype">
<property name="us">
<ref bean="user_service" />
</property>
</bean>

</beans>

xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">