action 传递其他类型的参数
请问 我用struts上传了一个文件后，在上传文件的Action里有 参数 
File upload； 和String savePath；等 
但我要重定向到里一个Action并传递参数 upload和savePath 即文件流和存储路径，
struts.xml里这样写的：

 <action name="doUpload" class="org.mybatis.education.action.file.FileUploadAction">
  <interceptor-ref name="fileUpload">  
  <param name="allowedTypes">
  image/bmp,image/png,image/gif,image/jpeg,image/jpg,text/plain,text/html,application/octet-stream,application/vnd.ms-powerpoint,application/msword,application/vnd.ms-excel,application/actet-stream,image/x-photoshop,application/xml,application/zip <!-- image/bmp,image/png,image/x-pgn,image/gif,image/jpg-->
  </param>
  <param name="maximumSize">1024000</param>
  </interceptor-ref>
  <interceptor-ref name="defaultStack"/>
  <param name="savePath">/upload</param>  
  <result name="input">/pages/Upload.jsp</result>
  <result name="success" type = "redirectAction">
  <param name = "actionName">files_manage_model_store_file</param>
  <param name="upload">${upload}</param>  
  <param name="savePath">${savePath}</param>
  </result>
  </action>

问题：
为什么文件传不过去，文件流不能通过这个方式传递吗？

------解决方案--------------------
type = "redirectAction"只有基本类型才能传递，其实就是URL传值 ，File对象当然传不过去啊，改为type="chain"试下