不同標籤的互操作可以通過表達式來實現傳值交互
function jsFunc(urlParam){ ... ... window.location.href = url; }
<display:table id="item" name="itemList" >
<display:column titleKey="columnTitle">
<c:url var="exeurl" value="displayUser.htm">
<c:param name="userId" value="${item.id}" />
</c:url>
<a href='#' οnclick="return jsFunc('<c:out value="${exeurl}"/>')" >${id.userName}</a>
</display:column>
</display:table>