IceFaces会话到期会导致异常

问题描述

我的IceFaces应用程序在会话到期时崩溃.它没有显示用户会话已过期"或网络连接中断"消息.

My IceFaces application crashes on session expiry. It's not showing the "User Session Expired" or "Network Connection Interrupted" message.

我的猜测是再次加载同一页面，并且由于支持bean代码无法找到会话变量，因此它引发以下异常:

My guess is the same page is loaded again, and since the backing bean code cannot find the session variables, it throws the following exception:

exception
javax.servlet.ServletException: java.lang.Exception: javax.faces.FacesException: Problem in renderResponse: /main-template.jspx: User session has expired or it was invalidated.

root cause
java.lang.Exception: javax.faces.FacesException: Problem in renderResponse: /main-template.jspx: User session has expired or it was invalidated.

root cause
javax.faces.FacesException: Problem in renderResponse: /main-template.jspx: User session has expired or it was invalidated.

root cause
javax.el.ELException: /main-template.jspx: User session has expired or it was invalidated.

root cause
com.icesoft.faces.webapp.http.core.SessionExpiredException: User session has expired or it was invalidated.

root cause
java.lang.IllegalStateException: PWC2778: getAttribute: Session already invalidated

异步更新已打开，并且jsp页面具有<ice:outputConnectionStatus />组件.

Asynchronous updates are on, and the jsp page has the <ice:outputConnectionStatus /> component.

关于如何阻止这种情况发生的任何想法?

Any ideas on how to stop this from happening?

注意:我正在做很多有趣的事情，例如在会话超时时重定向，并显示java.lang.Throwable的错误页面，但我已经将所有内容注释掉了-没运气.重定向和错误处理都打开时，应用程序第一次显示错误页面，然后过一会儿重定向到会话过期"页面.

Note: I was doing a lot of fancy stuff, like redirecting on session timeout, and displaying error pages for java.lang.Throwable, but I've commented it all out - without luck. When both redirection and error-handling were switched on, on the first time the application would show the error page, then after a while redirect to "session-expiry" page.

谢谢

推荐答案

我在RichFaces上遇到了同样的问题，这个答案救了我:

I had the same problem with RichFaces and this answer saved me :

jsf登录超时

对于很多转折和奇怪的事情，我建议去看这个博客:

For a lot of turn around and stranges things I recommend to see this blog :

http://balusc.blogspot.com/

这是我当前正在使用的代码:

Here is the code I'm currently using :

package com.spectotechnologies.jsf.viewhandler;

import com.sun.facelets.FaceletViewHandler;
import java.io.IOException;
import javax.faces.application.ViewHandler;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;

/**
 * Source : https://stackoverflow.com/questions/231191/jsf-login-times-out
 *
 * This ViewHandler is used to remove the ViewExpiredException problem at login
 * after the session is expired.
 *
 * @author Alexandre Lavoie
 */
public class AutoRegeneratorViewHandler extends FaceletViewHandler
{
    public AutoRegeneratorViewHandler(ViewHandler p_oViewHandler)
    {
        super(p_oViewHandler);
    }

    @Override
    public UIViewRoot restoreView(FacesContext p_oContext, String p_sViewID)
    {
        UIViewRoot oViewRoot = super.restoreView(p_oContext,p_sViewID);

        if(oViewRoot == null)
        {
            // Work around Facelet issue
            initialize(p_oContext);

            oViewRoot = super.createView(p_oContext,p_sViewID);
            p_oContext.setViewRoot(oViewRoot);

            try
            {
                buildView(p_oContext,oViewRoot);
            }
            catch(IOException e)
            {
                e.printStackTrace();
            }
        }

        return oViewRoot;
    }
}

您还必须将其放在faces-config.xml中:

You also have to put this in faces-config.xml :

<application>
    <view-handler>com.spectotechnologies.jsf.viewhandler.AutoRegeneratorViewHandler</view-handler>
</application>

这篇关于IceFaces会话到期会导致异常的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！