JSP mod运算符无法正常工作

Question

我正在尝试这个，但它的其他部分总是

 <c:forEach items="${records}" var="field" varStatus="counter">

    <c:choose>
        <c:when test="${counter.count mod 2 == 0}">
            <div class="classEven">
        </c:when>
        <c:otherwise>
            <div class="classOdd">
        </c:otherwise>
    </c:choose>
        sample text here

        </div>          

 </c:forEach>

这有什么问题？

Answer 1

您也可以使用${counter.count % 2 == 0}

Answer 2

test = ${counter.index mod 2 == 0}

Answer 3

从html +中分离jstl加上没有数学的艺术类型

<c:set var="row" value="Even" />
<c:forEach items="${records}" var="field" varStatus="counter">
<c:choose>
        <c:when test="${row eq 'Odd'}">
            <c:set var="row" value="Even" />
        </c:when>
        <c:otherwise>
            <c:set var="row" value="Odd" />
        </c:otherwise>
    </c:choose> 

       <div class="class${row}">

        sample text here

        </div>          


 </c:forEach>