我有index.jsp頁面。jsp中菜單的條件邏輯...
<form action="LoginServlet" method="post">
<fieldset style="width: 300px">
<legend> Login to App </legend>
<table>
<tr>
<td>User ID</td>
<td><input type="text" name="Emp_id" required="required" /></td>
</tr>
<tr>
<td>Password</td>
<td><input type="password" name="Pwd" required="required" /></td>
</tr>
<tr>
<td>User Type</td>
<td> <select name="usertype">
<option>Employee</option>
<option>Manager</option>
<option>Admin</option>
</select></td>
</tr>
<tr>
<td><input type="submit" value="Login" /></td>
</tr>
</table>
</fieldset>
</form>
的header.jsp: 當用戶與用戶類型爲「員工」只有兩種菜單選項必須顯示在接下來的頁面的頭文件記錄英寸如果usertype是「Admin」或「Manager」,那麼它必須顯示所有四個菜單選項。
<body>
<form name="headerform" action="Get">
<c:choose>
<c:when test="${usertype== Employee}">
<div class="nav">
<ul><li class="container"><img src="${pageContext.request.contextPath}/images/enabling.jpg" /></li>
<li class="current"><a href="daywise.jsp">DayWise TimeSheet</a></li>
<li><a href="timesheet.jsp">Weekly TimeSheet</a></li>
</ul>
</div>
</c:when>
<c:when test="${usertype== Manager}">
<div class="nav">
<ul><li class="container"><img src="${pageContext.request.contextPath}/images/enabling.jpg" /></li>
<li class="current"><a href="daywise.jsp">DayWise TimeSheet</a></li>
<li><a href="timesheet.jsp">Weekly TimeSheet</a></li>
<li><a href="newemployee.jsp">Add New Employeer</a></li>
<li><a href="retrieve.jsp">Retrieve TimeSheet</a></li>
</ul>
</div>
</c:when>
<c:when test="${usertype== Admin}">
<div class="nav">
<ul><li class="container"><img src="${pageContext.request.contextPath}/images/enabling.jpg" /></li>
<li class="current"><a href="daywise.jsp">DayWise TimeSheet</a></li>
<li><a href="timesheet.jsp">Weekly TimeSheet</a></li>
<li><a href="newemployee.jsp">Add New Employeer</a></li>
<li><a href="retrieve.jsp">Retrieve TimeSheet</a></li>
</ul>
</div>
</c:when>
<c:otherwise>
<div class="nav">
<ul><li class="container"><img src="${pageContext.request.contextPath}/images/enabling.jpg" /></li>
<li class="current"><a href="daywise.jsp">DayWise TimeSheet</a></li>
<li><a href="timesheet.jsp">Weekly TimeSheet</a></li>
</ul>
</div>
</c:otherwise>
</c:choose>
</form>
</body>
但從上面的代碼只有員工選項是可見的...我第一次使用jstl所以請告訴我如何做到這一點。或者是否有其他方法根據usertype隱藏選項。 Index.jsp與header.jsp不同。從index.jsp中,usertype值必須轉到其他jsp頁面的header.jsp。
使用'eq'標籤,而不是使用''==。 –
@VivekSingh謝謝你的回覆,但我試圖...不工作 – dpk
@BalusC我不知道它是如何重複。 – dpk