Question

El表达式取不到session中确实有的Map 下面代码没有效果 求大神解答

<c:forEach items="${sessionScope.workerMap['1']}" var="workers">

<%
int i=1;
%>
<tr>
<td class=tablebody2 valign=middle align=center width=""><%=i++ %></td>
<td class=tablebody1 valign=middle width=""> ${workers.Id }</td>
<td class=tablebody2 valign=middle align=left width=""> ${workers.Name }</td>
<td class=tablebody1 valign=middle align=center width="">${workers.Dept }</td>
<td class=tablebody2 valign=middle align=left width=""> ${workers.Position } </td>

</tr>
</c:forEach>
servlet中是这样写的：HttpSession session = request.getSession();
ServletContext sc = request.getServletContext();
WorkServiceImpl service = new WorkServiceImpl();

workers = (Map<Integer, Worker>) sc.getAttribute("workers");

session.setAttribute("workerMap", workers);
Map maps = (Map) session.getAttribute("workerMap");
System.out.println(maps.get(1));
Worker wor = (Worker) maps.get(1);
System.out.println(wor.getId());
response.sendRedirect("renshi/message.jsp");

下边的输出语句都是能成功得到值的

Answer 1

map不是用数组取的，是用key取出value

追问

我的key就是String类型的1.用
无信息!
其它
检测到里边是有东西的 就是打不到页面上。。。谢谢

追答

有东西，肯定不正确，循环是用keyset（）方法