Struts2 HTTP Status 500 - Unable to instantiate Action

Question

报错信息

HTTP Status 500 - Unable to instantiate Action, org.ssh.product.action.ProductAction, defined for 'product_save' in namespace '/'org.ssh.product.action.ProductAction

我的模型是

package org.ssh.product.action;
……
@Controller  //将这个action交给spring管理
@Scope("prototype") //作用域 为多实例
public class ProductAction extends ActionSupport {
……

我的struts.xml是

   <package name="product" extends="struts-default" namespace="/"  strict-method-invocation="false">
        <!-- 保存商品 -->
        <action name="product_save" class="org.ssh.product.action.ProductAction" method="{1}Product">
            <result>WEB-INF/view/index.jsp</result>
            <result name="input">WEB-INF/view/index.jsp</result>
        </action>
    </package>

我的spring 开启自动扫描了

<context:component-scan base-package="org.ssh.*"/>

我的web.xml

    <!-- 配置Struts2过滤器 -->
    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
     
    <!-- 配置Spring的监听器 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!-- 指定Spring配置文件所在路径 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>