有人可以给我看一个关于使用 GWT RequestFactory 进行会话处理的简单示例吗?也许它很简单,但我无法弄清楚。
我在某处读到我应该使用 ThreadLocal。嗯,我做到了。这是我的代码:
public class EC_RequestFactoryServlet extends RequestFactoryServlet {
private static final ThreadLocal < HttpServletRequest > uniqueReq =
new ThreadLocal < HttpServletRequest > () {
@Override protected HttpServletRequest initialValue() {
return null;
}
};
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse res) throws IOException, ServletException
{
uniqueReq.set(req);
super.doPost(req, res);
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException
{
uniqueReq.set(req);
super.doGet(req, res);
}}
这可以保存会话:
public class Authentication {
public static void SetLoggedInUserToSession(User user) {
EC_RequestFactoryServlet.getThreadLocalRequest()
.getSession().setAttribute("LOGGED_IN_USER", user);
}
public static User GetLoggedInUserFromSession(){
return (User)EC_RequestFactoryServlet.getThreadLocalRequest()
.getSession().getAttribute("LOGGED_IN_USER");
}}
登录之后还可以,但是再请求一次之后,会话是空的。
那么我错过了什么?还是有更好的方法?