forEach嵌套循环的问题

Question

程序中：

List firstList = 
    for(int i=0; i<firstList.size(); i++) {
        List secondListList = 
        request.setAttribute("option" + i, secondList);
    }
request.setAttribute("first", firstList);

 

页面中：

<%int i=0; %>
<c:forEach items="${first }" var="list">
    ${list.title }
    <c:forEach items="${_____ }" var="olist">
    <%i++; %>
    ${olist.optioni }</span>
    </c:forEach>
</c:forEach>

 

请问我内层循环的items="${__________ }"该怎么填？

 

Answer 1

[code="html"]
<%
List list = new ArrayList();
list.add("a");
list.add("b");
list.add("c");

    List<String> member = new ArrayList<String>();
    member.add("hello");
    member.add("world");


    request.setAttribute("list", list);

    for(int i = 0; i < list.size(); i++) {
        request.setAttribute("option" + i, member);
    }

%>

<c:forEach items="${requestScope.list}" varStatus="status" var="item">
    ${item}的选项
    <c:set value="${'option'}${status.index}" var="option" />
    <c:forEach items="${requestScope[option]}" var="i">
        ${i}
    </c:forEach>

    <br>
</c:forEach>

[/code]