Passing a List from Servlet to JSP

问题

When I try to set the value of a list in Servlet to a session variable and access it JSP like,

doGet

HttpSession session = request.getSession(true);
session.setAttribute("MySessionVariable", authorizeUserList);

JSP

<%List lst = session.getAttribute("MySessionVariable");%>

I get an error in JSP as "List cannot be resolved to a type"

So how should I do this? I want to pass a list from Servlet to JSP and populate a Drop down.

回答1:

Are you importing list and casting?

<%@page import="java.util.List"%>
<% List lst = (List) session.getAttribute("MySessionVariable"); %>

回答2:

You need to cast it to List as getAttribute return Object type.

来源：https://stackoverflow.com/questions/16982516/passing-a-list-from-servlet-to-jsp