struts2的validate在使用过程中的一个问题

在项目中有一个新增客户信息的的功能： 
1、在进入加入页面：add.jsp页面之前，要调用一个add_init.do来获取省份信息列表以供在add.jsp进行选择。 
2、add页面填写完毕以后。提交给addCustomer.do来进行数据库的操作，

在提交之前，要进行一次表单验证。用了STRUTS2的validation。

<!-- 客户加入初始化 -->
		<action name="customer_init" class="cn.rf.hz.parkassist.customer.action.AddAction" method="init">
			<interceptor-ref name="chain" /> 
			<interceptor-ref name="basicStack" /> 
			<result name="no_login">/parkassist/admin/login.jsp</result>
			<result name="init">/parkassist/customer/add.jsp</result>
			<interceptor-ref name="store">
		      <param name="operationMode">RETRIEVE</param>
		   </interceptor-ref>
		</action>
		<!-- 客户加入 -->
		<action name="customer_add" class="cn.rf.hz.parkassist.customer.action.AddAction" method="addCustomer">
		<interceptor-ref name="chain" /> 
		<interceptor-ref name="basicStack" />
			<!-- 动态设置savePath的属性值 -->
            <param name="savePath">upload/selfPic/</param>
			<result name="success" type="redirectAction">customer_search</result>
			<result name="failure">/parkassist/customer/add.jsp</result>
			<result name="no_login">/parkassist/admin/login.jsp</result>
            <result name="input" type="chain"> 
				<param name="actionName">customer_init</param> 
				<param name="namespace">/customer_action</param> 
			</result> 
			<interceptor-ref name="fileUpload">
                <!-- 文件过滤 -->
                <param name="allowedTypes">image/png,image/gif,image/jpeg</param>
                <!-- 文件大小, 以字节为单位 -->
                <param name="maximumSize">1025956</param>
            </interceptor-ref>
            <interceptor-ref name="store">
		     <param name="operationMode">STORE</param>
		    </interceptor-ref>
            <!-- 默认拦截器必须放在fileUpload之后，否则无效 -->
            <interceptor-ref name="defaultStack" />
		</action>

弄了3个小时，总算弄出来了。

http://struts.apache.org/release/2.1.x/docs/message-store-interceptor.html

<action name="submitApplication" ....>
   <interceptor-ref name="store">
     <param name="operationMode">STORE</param>
   </interceptor-ref>
   <interceptor-ref name="defaultStack" />
   <result name="input" type="redirect">applicationFailed.action</result>
   <result type="dispatcher">applicationSuccess.jsp</result>
</action>

<action name="applicationFailed" ....>
   <interceptor-ref name="store">
      <param name="operationMode">RETRIEVE</param>
   </interceptor-ref>
   <result>applicationFailed.jsp</result>
</action>