strust2 2.0.4版本中验证返回类型为chain时执行action配置

struts2 2.0.4中 修改defaultStack，将chain拦截器放到最后

  <interceptor-ref name="exception"/>
                <interceptor-ref name="alias"/>
                <interceptor-ref name="servletConfig"/>
                <interceptor-ref name="prepare"/>
                <interceptor-ref name="i18n"/>
               
                <interceptor-ref name="debugging"/>
                <interceptor-ref name="profiling"/>
                <interceptor-ref name="scopedModelDriven"/>
                <interceptor-ref name="modelDriven"/>
                <interceptor-ref name="fileUpload"/>
                <interceptor-ref name="checkbox"/>
                <interceptor-ref name="staticParams"/>
                <interceptor-ref name="params">
                  <param name="excludeParams">dojo\..*</param>
                </interceptor-ref>
                <interceptor-ref name="conversionError"/>
                <interceptor-ref name="validation">
                    <param name="excludeMethods">back,cancel,browse</param>
                </interceptor-ref>
               
               
                <interceptor-ref name="workflow">
                    <param name="excludeMethods">back,cancel,browse</param>
                    <!-- 把chain放到最后 -->
                </interceptor-ref>
                
             
                  <interceptor-ref name="chain"/>

<result name="input" type="chain">	<param name="namespace">/</param>
			<param name="actionName">updatePUser</param>
			<param name="method ">abc</param>
		</result>

 则会验证失败时会显示错误消息，同时会显示执行chain - action中的方法