<c:forEach items="${b.goodMap}" var="entry" varStatus="status">          ${entry.key}(${fn:length(entry.value)})${status.last?"":",  "} </c:forEach>

方式2：

<c:forEach items="${b.goodMap}" var="entry" varStatus="status"> ${entry.key}(${fn:length(entry.value)}) <c:choose>     <c:when test="${status.last}">     </c:when>     <c:otherwise>         ,&nbsp;     </c:otherwise> </c:choose> </c:forEach>