一个关于el与jstl的简单问题.

Question

jsp页面遍历servlet中的session存值小脚本:<%      for(int i = 0;i < list.size();i = i + 2){              Foot foot = (Foot)list.get(i);              Foot foot1 = (Foot)list.get(i+1);              // 省略部分...      }%>jstl:<c:foreach var="foot" value="${sessionScope.list}"></c:foreach>问题:如何在jstl中实现如小脚本中遍历徇环加2?并且取值如何实现如foot1变量中get(i+1)?高手请指点!!!

Answer 1

<c:foreach var="foot" value="${sessionScope.list}" begin=“0” end=“${fn:length(sessionScope.list)}” step=“2” varStatus=“status”>
${foot}====${sessionScope.list[status.index+1]}
</c:foreach>

Answer 2

<c:set var="id" value="0">
<c:foreach var="foot" value="${sessionScope.list}">
  <c:if test="${id%2==0}">
     <!--do your thing as your wish!!-->
     <c:set var="id" value="${id + 1}">    
  </c:if>
</c:foreach>

Answer 3

<c:foreach var="foot1" value="${sessionScope.list}" step="2" varStatus="status">
${foot1}
do something1
<c:foreach var="foot2" value="${sessionScope.list}" begin="${status.count+1}" end="${status.count+1}">
${foot2}
do something2
</c:foreach>
</c:foreach>
这么写也可以，不过比较猥琐

Answer 4

<c:foreach var="foot1" value="${sessionScope.list}" step="2" varStatus="status">
${foot1} do something1
<c:foreach var="foot2" value="${sessionScope.list}" begin="${status.count*2-1}" end="${status.count*2-1}">
${foot2} do something2
</c:foreach>
</c:foreach>上面搞错了

Answer 5

forEach正确语法
<c:forEach var="" begin="" end="" items="" step="">
</c:forEach>