struts2的上传文件大小限制引起HTTP Status 404 - No result defined for action com.cpms.action.organ.UploadFile and result inpu

<package name="downloadfile" extends="struts-default">
  <action name="download"
   class="com.cpms.action.organ.DownloadAction">
   <result name="success" type="stream">
    <param name="contentDisposition">
     attachment;filename="${fileName}"
    </param>
    <param name="inputName">downloadFile</param>
   </result>
  </action>

 </package>

在struts.xml中增加<constant name= "struts.multipart.maxSize" value="104857600" /><!-- 文件上传大小 100*1024*1024 100M-->故障排除