actionForm如何从页面获得集合数据

<s:url id="url2" action="delete.action">

										<s:param name="empId" value="empId"></s:param>

									</s:url>

									<s:a href="%{url2}"

										onclick="return(confirm('你确定要删除吗？do you  want to delete?'))">

										<s:text name="delete" />

									</s:a>

<a href="DelEmployeeServlet?empId=<c:out value="${employee.empId}"></c:out>"  onclick="return(confirm('你确定要删除吗？'))"><font size=2>删除</font></a>

<input type="checkbox" name="delete" value="<%=((ArrayList)al.get(i)).get(0) %>">