String uploadPath = ServletActionContext.getServletContext().getRealPath("upload");//上传服务器路径
//遍历文件
File file = new File(uploadPath);
String[] fileName = file.list();
ActionContext ac = ActionContext.getContext();
ac.put("fileName", fileName);
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
<head>
<title>文件的遍历</title>
</head>
<body>
<s:form name ="idFrmMain" method="post" action="">
<table>
<tr>
<th align="center">番号</th>
<th align="center">ファイル名</th>
<th align="center"></th>
</tr>
<s:iterator value="#fileName" status="stat">
<tr>
<td align="center">
<s:property value="#stat.index+1" />
</td>
<td align="left">
<s:property value="#fileName[#stat.index]"/>
</td>
<td align="center">
<a href="#" onclick="javascript:del(this);">削除</a>
</td>
</tr>
</s:iterator>
</table>
<s:hidden name="form.fileFileName" id="fileFileName"></s:hidden>
</s:form>
</body>
</html>

function del(el) {
var tr = el.parentNode.parentNode;//获得削除相对应的行
var fileFileName = tr.cells[1].innerHTML;//取得该行的第二列的值
if (confirm(fileFileName + "を削除してもよろしいでしょうか?")) {
document.getElementById("fileFileName").value = fileFileName;//把文件名的值赋给隐藏表单
document.idFrmMain.action = "SCR0030303_delete.do";
document.idFrmMain.target = "_self";
document.idFrmMain.submit();
}
}