一个EL表达式的问题
tusea 2010-01-23 05:55:37
某JSP:
...
<%
HashSet<String> h1 = new HashSet<String>();
h1.add("a");
h1.add("b");
HashSet<HashSet<String>> h2 = new HashSet<HashSet<String>>();
h2.add(h1);
session.setAttribute("h2", h2);
%>
<body>
${sessionScope.h2 }
</body>
//现在EL能取出h2的值是[[b,a]],问,怎么用EL取出b或a?
thx