<c:forEach begin="1" end="${list.roomc.seatcountr/12}" step="1" varStatus="pai">
<div >
<c:forEach begin="1" end="12" step="1" varStatus="lie">
<c:if test="${list.rowss+list.columnss}">
<img src="/MyFilm/picture/kyzuo.jpg" >
</c:if>
<c:if test="${list.rowss+list.columnss}">
<img src="/MyFilm/picture/sczuo.jpg" >
</c:if>
</c:forEach>
</div>
</c:forEach>
用什么方法 将${list.rowss+list.columnss} 这个EL表达式里面的数据转换成INT类型
需要倒包不?