在page 1
<%
Username user = new Username("username","password","email");
session.setAttribute("user1", user);
%>
<jsp:forward page="Page2.jsp" >
<jsp:param name="user_1" value="<%= user.getUsername() %>" />
</jsp:forward>
在page 2
我想user_1
从前向获取属性。我怎样才能做到这一点?