7

重定向到登录页面后AuthenticationFilter，我想注销用户。

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

但是，ViewExpiredException当用户再次登录时，我得到了。

我的问题是

1：如果我不这样做identity.logout();，由于旧用户会话仍然存在，用户再次重新登录。 2：如果我这样做identity.logout();，我会ViewExpiredException在用户再次登录时得到。

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() {
    }
}

登录.xhtml

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

登录Bean.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);   
        }
    }
}
4

1 回答 1

5

不要identity.logout();在prerenderview方法中使用。在AuthenticationFilter中，如果您想销毁当前会话并创建新会话，请在传递 messageID 之前执行以下操作。

if(...) {
    session.invalidate();
    session = httpRequest.getSession(true); 
    ....
} else if(...){
    session.invalidate();
    session = httpRequest.getSession(true); 
    ....
}
于 2012-12-24T04:00:27.777 回答