Question

java jstl如何遍历存在List当中的map

后台程序:Map m = new HashMap();m.put("a",1);List a = new ArrayList();a.add(m);request.setAttribute("list",a); 请问我在jsp中如何能取到 对应a的值1??

Answer 1

用el表达式${list.a }

Answer 2

<c:forEach var="name" items="${a}">
<c:forEach var="entry" items="${name}">
<c:out value="${entry.key}"/>
<c:out value="${entry.value}"/>
</c:forEach>
</c:forEach>