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<div id="header">
<div>
<div class="logo">
<a href="LoginRegister.jsp">Sample Project</a>
</div>
<ul id="navigation">
<li <c:if test="${page eq 'login' }"> class="active" </c:if> >
<a href="<%=request.getContextPath()%>LoginRegister.jsp">Home</a>
</li>
<li <c:if test="${page eq 'upload' }"> class="active" </c:if> >
<a href="<%=request.getContextPath()%>/app/UploadImages.jsp">Upload</a>
</li>
<li <c:if test="${page eq 'album' }"> class="active" </c:if> >
<a href="<%=request.getContextPath()%>/app/MyAlbum.jsp">My Albums</a>
</li>
</ul>
</div>
<div class="loggedInInfo">
**<c:if test="${not empty user}">
<p>Hello ${user}.</p><b><a href="<%=request.getContextPath()%>/LogoutServlet">Logout</a></b>
</c:if>
<c:if test="${empty user}">
<p>You're not logged in!</p>
</c:if>**
</div>
</div>
在这段代码中我得到未知标签warning.I已包括在WEB-INF/lib目录directory.Because JSTL的jar文件强调的代码块只能说明这个warning.I找不到我的错误,请帮助。 JSTL的标签显示未知的标签警告