identity.logout()之后的ViewExpiredException; 在JBoss Seam

Question

在我AuthenticationFilter重定向到登录页面后,我想退出给用户.

这就是为什么,我把identity.logout();我的预渲染方法checkPermission(...)的login.xhtml.

但是,我得到ViewExpiredException了用户再次登录的时间.

我的问题是

1:如果我不这样做identity.logout();,用户再次重新登录,因为旧的用户会话仍然存在. 2:如果我这样做identity.logout();,我会ViewExpiredException在用户再次登录时获得.

AuthenticationFilter.java

public class AuthenticationFilter implements Filter  {
    .....

    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest httpRequest = (HttpServletRequest) servletRequest;
        HttpServletResponse httpResponse = (HttpServletResponse) servletResponse;
        HttpSession session = httpRequest.getSession();
        User user = (User) session.getAttribute(Constants.LOGIN_USER);
        if (user == null) {
            session.setAttribute(Constants.MESSAGE_ID, MessageId.REQUIRED_TO_LOGIN);
            String loginView = httpRequest.getContextPath() + Constants.LOGIN_PAGE;
            httpResponse.sendRedirect(loginView);
        } else if (!user.getRole().equals(Role.SYSTEM_ADMINISTRATOR)) {
            System.out.println("User Role : " + user.getRole());
            session.setAttribute(Constants.MESSAGE_ID, MessageId.REQUIRED_TO_ADMIN_ROLE);
            String loginView = httpRequest.getContextPath() + Constants.LOGIN_PAGE;
            httpResponse.sendRedirect(loginView);
        } else {
            filterChain.doFilter(servletRequest, servletResponse);
        }
        servletContext.log("Exiting the filter");
    }

    public void destroy() {
    }
}

login.xhtml

....
<f:event listener="#{LoginBean.checkPermission}" type="preRenderView" />
....

LoginBean.java

@Scope(ScopeType.EVENT)
@Name("LoginBean")
public class LoginBean extends BaseBean {
    ....

    public boolean authenticate() {
        ....
    }

    public void checkPermission(ComponentSystemEvent event) {
        FacesContext context = getFacesContext();
        ExternalContext  extContext = context.getExternalContext();
        String messageId = (String) extContext.getSessionMap().remove(Constants.MESSAGE_ID);
        if(messageId != null) {
            identity.logout();
            addMessage(null, FacesMessage.SEVERITY_ERROR, messageId);   
        }
    }
}

Answer 1

不要identity.logout();在prerenderview方法中使用.在AuthenticationFilter,做如下您通过MESSAGEID之前,如果你想destory当前的会话,并创建新的会话.

if(...) {
    session.invalidate();
    session = httpRequest.getSession(true); 
    ....
} else if(...){
    session.invalidate();
    session = httpRequest.getSession(true); 
    ....
}