Could not find a Content-Type for upload in struts2

Hi Ranchers,
I am not able to get the contents for the csv file but for other files its working fine.

The code is

<s:form action="doUpload" method="POST" enctype="multipart/form-data">
<tr>
<td colspan="2"><h1>File Upload Example</h1></td>
</tr>

<s:file name="upload" label="File"/>
<s:textfield name="caption" label="Caption"/>
<s:submit />
</s:form>

---------------------------------------------------------------------------
in Struts.xml i have placed the below code
<action name="upload" method="upload" class="UploadAction" >

<result name="success">/pages/uploadsuccess.jsp</result>
</action>
---------------------------------------------------------------------------
uploadsuccess.jsp has

<%@ page
language="java"
contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Showcase</title>

</head>

<body>
<table class="wwFormTable">
<tr>

<td colspan="2"><h1>File Upload Example</h1></td>
</tr>

<tr>
<td class="tdLabel"><label for="doUpload_upload" class="label">File:</label></td>
<td><s

roperty value="upload" /></td>
</tr>

</table>

</body>
</html>

Can you please tell me how to upload a csv file. I badly need this to be solved. So please help out

Hi.

Please make sure you put this code in Struts.xml file or not.

<interceptor-stack name="fileUploadStack">
<interceptor-ref name="fileUpload"/>
<interceptor-ref name="basicStack"/>
</interceptor-stack>

Thanks,
Nishan Patel.

I have included and tried but still the same. It works for other type of files like xml,txt,zip formats.

and it says "Could not find a Content-Type for upload"

sorry i mean to say "Could not find a Content-Type for upload" for csv files only not for other files