一个关于el与jstl的简单问题.

[qq363207624]

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!!!

[wzju64676266]

不支持，如果强制要用标签的话，自己写个好了

[wzju64676266]

<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

[wzju64676266]

<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

[thatsinteresting]

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

[tubage408]

<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>

[tubage408]

end 再-1

[blazingfire]

<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>