struts2.0+spring2.5+hibernate3.0整合小项目报错

请高手指教：最近学习SSH2框架搭建，用Myeclipse6.5环境，spring整合hibernate容易，但此基础上增加struts2时出错，不知如何解决，请高手指教！谢谢！
struts.xml中：
<struts>
   <!-- 设置Struts2默认的ObjectFactory为spring -->
    <constant name="struts.objectFactory" value="spring" />   
    <!-- 设置Struts2应用是否处于开发模式，通常在开发调试阶段设为true,正式上线后可设为false -->
    <constant name="struts.devMode" value="true" />  
    <constant name="struts.i18n.encoding" value="UTF-8" />      
   <package name="SSH3" extends="struts-default">
     <action name="memberAction" class="action.MemberAction">
         <result name="success">/page/suc.jsp</result>
         <result name="fail">/page/fail.jsp</result>
     </action>
   </package>
</struts>   
applicationContext.xml中：
<!-- 装配通用数据库访问类BaseDAOImpl-->
     <bean id="baseDAO" class="DAOImpl.BaseDAOImpl">
        <property name="sessionFactory" ref="sessionFactory">
        </property>
     </bean>            
     <bean id="memberBizTarget" class="BizImpl.MemberBizImpl">
        <property name="baseDAO" ref="baseDAO" />         
     </bean>
     <bean id="memberBiz" parent="baseTransProxy">
        <property name="target" ref="memberBizTarget"/>
     </bean>   
<!-- 配置struts的Action -->      
      <bean id="memberAction" class="action.MemberAction" scope="prototype">
        <property name="memberBizDAO" ref="memberBizTarget"/>
      </bean>
MemberAction类：
public class MemberAction extends ActionSupport{
    private String name;
    private String password;
    private MemberBizDAO memberBizDAO;
   
    public String execute(){
        Member m=null;
        int flag=0;
        List l=this.getMemberBizDAO().listAllMember();
        Iterator i=l.iterator();
        while (i.hasNext()){
            m=(Member)i.next();
            if(m.getName().equals(this.getName())&&m.getPassword().equals(this.getPassword())){
                flag=1;
                break;
            }
        }
            if(flag==1)
                return "success";
            else
                return "fail";                    
    }
出错问题：org.apache.jasper.JasperException: java.lang.ClassCastException: $Proxy15
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:413)
若我不让MemberBizImpl 实现 MemberBizDAO接口就运行正常啊！
但运行显示：
javax.servlet.ServletException: Unable to instantiate Action, action.MemberAction,  defined for 'memberAction' in namespace ''Error creating bean with name 'memberBizDAO': Bean definition is abstract - action - file:/D:/Apache%20Tomcat%206.0.18/webapps/SSH3/WEB-INF/classes/struts.xml:15:62
    org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:515)
    org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:419)

到底错误在哪里啊？？？？
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spring配置文件有问题
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