JSTL日期判斷，JSTL時間判斷

    設置時間

<%
    Calendar cal = Calendar.getInstance();
    cal.setTime(new Date());
    cal.add(Calendar.MONTH, 1);
%>
<fmt:formatDate value="<%=new Date() %>" var="nowmonth" pattern="yyyyMM"/>
<fmt:formatDate value="<%=cal.getTime() %>" var="nextmonth" pattern="yyyyMM"/>

而後在循環裏面和當前時間判斷

<c:choose>
    <c:when test="${fn:length(entity.conEnddate) eq 8}">
        <c:set var="dataDate" value="${fn:substring(entity.conEnddate, 0, 6)}" /><!-- 截取時間-->
        <c:choose>
            <c:when test="${dataDate eq nowmonth}"><!-- 當月-->
                <span style="color: red"><fs:property value="#entity.conEnddate" /></span>
            </c:when>
            <c:when test="${dataDate eq nextmonth}"><!-- 下個月-->
                <span style="color: blue"><fs:property value="#entity.conEnddate" /></span>
            </c:when>
            <c:otherwise><!-- 其餘月-->
                <fs:property value="#entity.conEnddate" />
            </c:otherwise>
        </c:choose>
    </c:when>
    <c:otherwise>
        <fs:property value="#entity.conEnddate" />
    </c:otherwise>
</c:choose>