如何編寫JSTL而不是Scriplets來獲取用戶會話？

Question

繼：

<% if ((String) session.getAttribute("userID") != null) { 
    String username= (String) session.getAttribute("userID"); %> 
    <li><a><small>Logged in as <%=username %></a></li> 
<% } %> 

感謝

Answer 1

應該工作：

<c:if test="${not empty sessionScope.userID}"> 
    <li><a><small>Logged in as ${sessionScope.userID}</a></li> 
</c:if>