随机JSF错误:找不到保存的视图状态 [英] Random JSF error: no saved view state could be found
问题描述
我有一个非常奇怪的错误:无法找到视图标识符的已保存视图状态:/mypage.xhtml
问题是它随机出现，仅占用户/执行的10％.
I have a very strange error: No saved view state could be found for the view identifier: /mypage.xhtml
The problem is that it appears randomly, to just ~10% of the users/executions.
应用程序服务器:Apache Tomee 1.5.2稳定版/1.6.0-2013.09.20 dev(两者都发生).我使用了它们各自附带的MyFaces发行版，因此2.1.10/2.1.12，所以没有添加任何新内容.
Application server: Apache Tomee 1.5.2 stable / 1.6.0-2013.09.20 dev (It happens on both). I use the MyFaces distribution that comes with each of them, so 2.1.10 / 2.1.12, so nothing new added.
web.xml的一部分:
Part of web.xml:
<context-param>
<param-name>org.apache.myfaces.USE_ENCRYPTION</param-name>
<param-value>false</param-value>
</context-param>
<context-param>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>client</param-value>
</context-param>
因此，不应出现任何状态视图异常，因为状态在客户端上.它是在服务器上设置的，但我认为也许客户端会修复它，但是什么也没有.实际上，该错误的发生没有差异.
So, no state view exception shouldn't happen, because state is on client. It was set on server before, but I thought maybe client will fix it, but nothing. There was actually no difference in the occurrence of that error.
执行流程:
1.客户端打开xhtml页面(JSF).
2.客户端单击命令按钮以执行各种操作，该按钮连接到JSF @ViewScoped ManagedBean的public void方法.
3.是的，该方法是无效的，因为我不需要返回String来重定向到另一个页面.我需要重定向到/page/id(例如:/market/24，/profile/43)，因此将String作为导航目标返回的方法是无用的，因为我使用的是:FacesContext.getCurrentInstance().getExternalContext().redirect(path);
4.在大约90％的情况下，一切正常，用户被重定向到每个特定页面.在大约10个剩余时间(随机)中，他们得到No saved view state could be found for the view identifier: /pagename.xhtml
Execution flow:
1. Client opens xhtml page (JSF).
2. Client clicks on an command button to do various things, button connected to a public void method of a JSF @ViewScoped ManagedBean.
3. Yes, the method is void because I don't need to return a String to redirect to another page. I need to redirect to /page/id (example: /market/24, /profile/43), therefore methods that return a String as navigation destinations are useless, because I use: FacesContext.getCurrentInstance().getExternalContext().redirect(path);
4. In ~90% of the cases, everything works perfectly and users are redirected to each specific page. In the rest of ~10 (randomly), they get No saved view state could be found for the view identifier: /pagename.xhtml
我真的很感谢您的帮助，因为我不知道如何解决它.
提前非常感谢.
I would really appreciate some help here, because I have no idea how to get it fixed.
Thanks a lot in advance.
PS.我使用PrimeFaces，并且在web.xml中也有几个自己的过滤器，但我希望这不是问题.
PS. I use PrimeFaces and I also have a couple of my own filters in web.xml, but that shouldn't be a problem, I hope so.
其中一个页面的堆栈跟踪:
Stack trace for one of the pages:
25-Sep-2013 07:39:26.380 SEVERE [http-bio-80-exec-15] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [Faces Servlet] in context with path [] threw exception [/dashboard/edit-profile.xhtmlNo saved view state could be found for the view identifier: /dashboard/edit-profile.xhtml] with root cause
javax.faces.application.ViewExpiredException: /dashboard/edit-profile.xhtmlNo saved view state could be found for the view identifier: /dashboard/edit-profile.xhtml
at org.apache.myfaces.lifecycle.RestoreViewExecutor.execute(RestoreViewExecutor.java:132)
at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:170)
at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:77)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.ocpsoft.rewrite.servlet.RewriteFilter.doFilter(RewriteFilter.java:199)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at com.pingushare.boundary.filter.ActivateAccountFilter.doFilter(ActivateAccountFilter.java:37)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at com.pingushare.boundary.filter.SecurityFilter.doFilter(SecurityFilter.java:36)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at com.pingushare.boundary.filter.ForceFreshPageAndWWWFilter.doFilter(ForceFreshPageAndWWWFilter.java:49)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.tomee.catalina.OpenEJBValve.invoke(OpenEJBValve.java:45)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
推荐答案
在MyFaces和Tomee论坛/邮件列表上进行了长时间讨论之后，这就是我设法消除此问题的方法:我切换了 JSF在这个项目中执行到Majorra 2.1.26.直到现在，该错误才出现.
After long discussions on MyFaces and Tomee forums/mailing lists, this is how I managed to eliminate this problem: I switched the JSF implementation in this project to Majorra 2.1.26. The error didn't appear anymore until now.
由于此错误没有任何意义(在检查了我的项目和MyFaces的源代码之后)并且无法复制，因此我们实际上无法找到针对此错误的修复程序，但至少它不会在Majorra，所以如果其他人遇到此错误，这可能会有所帮助.
As this bug didn't make any sense (after checking source of both my project and MyFaces) and couldn't be reproduced, we couldn't actually find a fix for it, but at least it doesn't happen in Majorra, so this could be helpful if someone else gets this error.
提及:这不是许多JSF开发人员获得的基本找不到已保存的视图状态".那是藏在其他地方的东西.
Mention: this is not the basic "no saved view state could be found" that many JSF developers get. That's something else hiding somewhere.
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