struts2文件上传问题

Question

大家好，有个很棘手的问题希望大家解决一下：谢谢
struts2上传文件：jsp页面为：
<form id="theForm" name="theForm" method="post" enctype="multipart/form-data">
<td>  
<input name="doc" type="FILE"  class="input-text" style="width: 500px;" value="">
</td>
</form>
action中为：
private File doc;//上传文件
get set 方法都有为什么action中得到的文件为null,其他的也没地方设置了呀，，，这么晚了，在的朋友希望大家解决下谢谢！！！

Answer 1

struts.xml配置文件中对action的配置需加拦截器
<interceptor-ref name="fileUploadStack"/>

Answer 2

先谢谢啊，这么晚了还来帮我解决，
struts。xml文件中这么写的，，，要怎么加呢？
<include file="struts/struts_login.xml" />之前别人写的也好像没加就可以

Answer 3

这个必须得加
<action name="upFile" class="webAction" method="upFile">
        <interceptor-ref name="params"/>
        <interceptor-ref name="fileUploadStack"/>
            <result>ok.jsp</result>
            <result name="error">/error.jsp</result>
        </action>
form中使用
<form id="theForm" name="theForm" action="upFile.do" method="post" enctype="multipart/form-data">

Answer 4

我在配置文件中加了：<struts>
<package name="meetingInfo" extends="struts-base,json-default,struts-default">

<interceptors>
           <interceptor-stack name="defaultUpload">
               <interceptor-ref name="fileUpload">
    <param name="maximumSize">10240000</param>
   </interceptor-ref>
              <interceptor-ref name="paramsPrepareParamsStack"/>
           </interceptor-stack>
        </interceptors> 
<default-interceptor-ref name="defaultUpload"></default-interceptor-ref>
  
<action name="meetingInfo" class="com.lsra.app.consultativeCommittee.action.MeetingInfoAction">
。。但还是没读取到：doc---File 还是为null
感觉离做出来越来越近了，还差一点点吧

Answer 5

你这里定义了拦截器，但是没在action的配置中引用

Answer 6

<struts> <package name="postageCancelApprove" extends="json-default,struts-default">
<interceptors>
           <interceptor-stack name="defaultUpload">
               <interceptor-ref name="fileUpload">
    <param name="maximumSize">10240000</param>
   </interceptor-ref>
              <interceptor-ref name="paramsPrepareParamsStack"/>
           </interceptor-stack>
        </interceptors> 
<default-interceptor-ref name="defaultUpload"></default-interceptor-ref>  

<action name="postageCancelApprove" class="com.lsra.app.postageCancel.action.PostageCancelApproveAction">

<result name="createPostageCancelApprove" type="dispatcher">
/apps/postageCancel/postageCancelApproveCreate.jsp
</result>
<result name="excelImport" type="dispatcher">
/apps/postageCancel/excelImport.jsp
</result>
<result name="modifyPostageCancelApprove" type="dispatcher">
/apps/postageCancel/postageCancelApproveModify.jsp
</result>
<result name="showPostageCancelApprove" type="dispatcher">
/apps/postageCancel/postageCancelApproveShow.jsp
</result>
<result name="queryPageForExamine" type="dispatcher">
/apps/postageCancel/queryPostageCancelApproveForExamine.jsp
</result>
<result name="queryPageForReply" type="dispatcher">
/apps/postageCancel/queryPostageCancelApproveForReply.jsp
</result>
<result name="queryPageForStop" type="dispatcher">
/apps/postageCancel/queryPostageCancelApproveForStop.jsp
</result>
<result name="queryPostageCancelApprLog" type="dispatcher">
/apps/postageCancel/queryPostageCancelApprLog.jsp
</result>
<result name="showPostageCancelApprLog" type="dispatcher">
/apps/postageCancel/postageCancelApprLogShow.jsp
</result>
</action>

<action name="downloadCancelProject" class="com.lsra.app.postageCancel.action.PostageCancelApproveAction" method="downloadCancelProject">
<result type="stream">
<param name="contentType">
application/octet-stream
</param>
<param name="inputName">downloadCancelProjectInputStream</param>
<param name="contentDisposition">
attachment;filename="${downloadCancelProjectFileName}"
</param>
<param name="bufferSize">4096</param>
</result>
</action>
 <action name="downloadPostageCancelApproveTemplate" class="com.lsra.app.postageCancel.action.PostageCancelApproveAction" method="downloadPostageCancelApproveTemplate">
<result type="stream">
<param name="contentType">
application/octet-stream
</param>
<param name="inputName">downloadPostageCancelApproveTemplateInputStream</param>
<param name="contentDisposition">
attachment;filename="${downloadPostageCancelApproveTemplateFileName}"
</param>
<param name="bufferSize">4096</param>
</result>
</action>
<action name="downloadPostageCancelApprove" class="com.lsra.app.postageCancel.action.PostageCancelApproveAction" method="downloadPostageCancelApprove">
<result type="stream">
<param name="contentType">
application/octet-stream
</param>
<param name="inputName">downloadPostageCancelApproveInputStream</param>
<param name="contentDisposition">
attachment;filename="${downloadPostageCancelApproveFileName}"
</param>
<param name="bufferSize">4096</param>
</result>
</action>
</package>
</struts>上面是他们的配置文件

Answer 7

<struts>
<package name="meetingInfo" extends="struts-base,json-default,struts-default">

<interceptors>
           <interceptor-stack name="defaultUpload">
               <interceptor-ref name="fileUpload">
    <param name="maximumSize">10240000</param>
   </interceptor-ref>
              <interceptor-ref name="paramsPrepareParamsStack"/>
           </interceptor-stack>
        </interceptors> 
<default-interceptor-ref name="defaultUpload"></default-interceptor-ref>
  
<action name="meetingInfo" class="com.lsra.app.consultativeCommittee.action.MeetingInfoAction">
<result name="queryMeetingInfo" type="dispatcher">
/apps/consultativeCommittee/meetingInfoList.jsp
</result>
<result name="showMeetingInfo" type="dispatcher">
/apps/consultativeCommittee/meetingInfoShow.jsp
</result>
<result name="createMeetingInfo" type="dispatcher">
/apps/consultativeCommittee/meetingInfoCreate.jsp
</result>
<result name="modifyMeetingInfo" type="dispatcher">
/apps/consultativeCommittee/meetingInfoModify.jsp
</result>

</action>
</package>
</struts>上面是我的配置文件