Question

我有index.jsp页面。

 <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>

header.jsp中：当用户使用usertype作为“Employee”登录时，只有两个菜单选项必须显示在下一页的头文件中。如果usertype是“Admin”或“Manager”，那么它必须显示所有四个菜单选项。

<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>

但是从上面的代码中只有员工选项可见......我是第一次使用jstl所以请告诉我该怎么做。或者是否有任何其他方法可以根据usertype隐藏选项。 Index.jsp与header.jsp不同。从index.jsp开始，usertype值必须转到其他jsp页面的header.jsp。

Answer 1

您确定该员工是否可见？不是otherwise选项吗？

您的情况有误，请尝试更改：

 <c:when test="${usertype eq 'Employee'}">

jsp中菜单的条件逻辑...

1 个答案: