以下是我的代码，如何加入上面的功能？
<%@ page contentType= "text/html;charset=gb2312 " language= "java "%>
<%@ page import= "com.jspsmart.upload.*,java.sql.* "%>
<jsp:useBean id= "mySmartUpload " scope= "page " class= "com.jspsmart.upload.SmartUpload "/>
<html>
<head> <title> 上载附件 </title> </head>
<body>
<%
String userid = session.getAttribute( "username ").toString();
try {
mySmartUpload.initialize(pageContext);
mySmartUpload.service(request,response);
mySmartUpload.upload();
String fn=mySmartUpload.getFiles().getFile(0).getFileName();
mySmartUpload.setAllowedFilesList( "xls ");
com.jspsmart.upload.File myFile = mySmartUpload.getFiles().getFile(0);
myFile.saveAs( "E:/Tomcat 5.0/webapps/upload/ "+userid+ ".xls ");
}catch(Exception e) {
e.printStackTrace();}
%>
</body>
</html>
------解决方案--------------------
http://hmilyld.cn/read.php?465
blog上有个详细的例子.
SmartUpload su = new SmartUpload();
//初始化上传
su.initialize(pageContext);
//定义允许上传文件类型
su.setAllowedFilesList( "gif,jpg,rar,zip,doc,txt ");
//不允许上传文件类型
su.setDeniedFilesList( "jsp,asp,php,aspx,html.htm ");
//单个文件最大限制
su.setMaxFileSize(200000);
//总共上传文件限制
su.setTotalMaxFileSize(5000000);
//开始上传,如果超过限制或者为不允许类型，抛出异常提示
su.setContentDisposition(null);
try {
su.upload();
} catch (Exception e) {
out.println( "你选择的文件不允许上传或者文件过大，请返回检查！ ");
}