急!急!!!!!!请高手进来.关于jspSmartUpload上传下载组件的问题???


 下面是我写的jsp:
<%@ page language="java" %>
<!DOCTYPE HTML PUBLIC "-//w3c//dtd html 4.0 transitional//en">
<jsp:useBean id="mySmartUpload" scope="page" class="com.jspsmart.upload.SmartUpload"  />
<html>
<head>
<title>Lomboz JSP</title>
</head>
<body bgcolor="#FFFFFF"><%
String filename="a20054301609434.doc";
mySmartUpload.initialize(pageContext);
mySmartUpload.setContentDisposition("null");
response.setContentType("application/msword");
response.setHeader("Content-Disposition","attachment; filename=" +"/"+filename);
mySmartUpload.downloadFile("C:\\jsp\\a20054301609434.doc");
%></body>
</html>这是一个测试程序,可是在弹出下载框的时候,文件名称是:DownLoadAction.do(是我用于跳转的Action)
文件类型是:未知文件类型.
   请问各位高手我怎样才可以得到和我要下载的文件名称和类型啊????????