dao注入问题，junit测试ok，但是通过webwork转发就是null，下面是代码

Question

xwork.xml:
<!DOCTYPE xwork PUBLIC "-//OpenSymphony Group//XWork 1.0//EN" "http://www.opensymphony.com/xwork/xwork-1.0.dtd"><xwork>
<include file ="webwork-default.xml"/>
<package name="default" extends="webwork-default">
<action name="adminlogin" class="adminAction" method="login">
<result name="success">/AdminIndex.jsp</result>
<result name="error">/login.jsp</result>
</action>
</package>
</xwork>
applicationContext.xml:
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
           http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
<context:annotation-config/>
<context:component-scan base-package="org.net.booknet"/>

<bean id="DataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://localhost:3306/aaaa?useUnicode=true&amp;characterEncoding=UTF-8"></property>
<property name="username" value="root"></property>
<property name="password" value="root"></property>  
</bean>

<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource">
<ref bean="DataSource" />
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.max_fetch_depth">3</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.format_sql">true</prop>
</props>
</property>
<property name="annotatedClasses">
<list>
<value>org.net.booknet.vo.Admin</value>
</list>
</property>
</bean>

<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory">
<ref bean="sessionFactory"/>
</property>
</bean>
<tx:annotation-driven transaction-manager="transactionManager"/>

<bean id="baseDAO" class="org.net.booknet.dao.impl.BaseDAO" abstract="true">
<property name="sessionFactory">
<ref bean="sessionFactory"/>
</property>
</bean>  

<bean id="adminDAO" class="org.net.booknet.dao.impl.AdminDAO" parent="baseDAO"></bean> <bean id="adminAction" autowire="byType" class="org.net.booknet.action.AdminAction"></bean>
</beans>
AdminAction.java：
public class AdminAction extends ActionSupport {

protected Admin admin;
protected IAdminService adminService;



public IAdminService getAdminService() {
return adminService;
} public void setAdminService(IAdminService adminService) {
this.adminService = adminService;
} public Admin getAdmin() {
return admin;
} public void setAdmin(Admin admin) {
this.admin = admin;
} public String login() throws Exception{
System.out.println(admin.getUsername());
Admin a = adminService.login(admin.getUsername(), admin.getPassword());
 if(a !=null){
 Map session = ActionContext.getContext().getSession();
 session.put("admin", a);
 return SUCCESS;
 }
 return ERROR;
}

public String logout() throws Exception {
Map session = ActionContext.getContext().getSession();
session.remove("admin");
return SUCCESS;
}
}
AdminService.java:@Service
public class AdminService implements IAdminService {
@Resource private IAdminDAO adminDAO; public Admin login(String username, String password) {
System.out.println(adminDAO);   //这里输出的是空值
return adminDAO.login(username, password);  //这里报错
        }
}AdminDAO.java:public class AdminDAO extends BaseDAO implements IAdminDAO { protected Class getEntityClass() {
return Admin.class;
} public Admin login(String username, String password) {
String hql = "from Admin where username=? and password=?";
List list = getHibernateTemplate().find(hql,
new Object[] { username, password });
if (list.size() <= 0) {
return null;
}
return (Admin) list.get(0);
}
}
请大家帮我看下啊，junit测试是ok，但是用jsp页面访问就出问题，急啊！！