如何使用jstl标记遍历jsp页面中的JSON字符串？

Question

我有来自servlet session.setAttribute("leavesJson", leavesJson);的这个JSON字符串，现在我正在尝试在JSP页面上打印它。

JSON字符串：

{"7:[{"ID":7,"Req":6,
"Type":1,"dataAi":null,"dataA":null,"dataR":null,"nrZ":null}],
"8":[{"ID":8,"Req":11,"Type":2,"dataA":null,"dataAi":null,"dataR":null,"nrZ":null}]}

在JSP页面中我有这个：

<c:set var="leavesJson" value="leavesJsonForTL"/>
    <c:if test="${empty leavesJsonForTL.leavesTeam}">

        <c:out value="${leavesJson}"/>
        <c:forEach begin="0" end="${leavesJson.length() -1}" var="leavesJsonForTL"> 

               //what should I put here? 

        </c:forEach>

    </c:if>

我想打印JSON中的所有细节，但实际上并不知道如何继续。如何从字符串中访问该元素？