求问out都可以正常使用,但是set老是空的
输出一直是true woaini
<c.set var="day" scope="session" value="today"}></c.set> ${empty day} <c:out value="${day}" default="woaini"></c:out><br>
输出一直是true woaini
<c.set var="day" scope="session" value="today"}></c.set> ${empty day} <c:out value="${day}" default="woaini"></c:out><br>
2018-01-24
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