JSF concurrentModification exception在DataTable上

发布于 2025-02-13 08:32:23 字数 6521 浏览 1 评论 0 原文

我们最近发生了停电，在我们的应用程序日志中，我们可以看到此例外。看起来表中的数据正在修改时，而PrimeFaces正在排序呢？这是怎么可能的？

这是不经常发生的事情，它只是在生产环境中发生一次。同样，同样的堆栈跟踪重复次数，例如十秒钟或更多次。

05-Jul-2022 19:13:53.583 SEVERE [http-nio-8080-exec-746] com.sun.faces.application.view.FaceletViewHandlingStrategy.handleRenderException Error Rendering View[/pages/example.xhtml]
java.util.ConcurrentModificationException
    at java.util.ArrayList.sort(ArrayList.java:1466)
    at java.util.Collections.sort(Collections.java:177)
    at org.primefaces.component.datatable.feature.SortFeature.singleSort(SortFeature.java:167)
    at org.primefaces.component.datatable.DataTableRenderer.preRender(DataTableRenderer.java:141)
    at org.primefaces.component.datatable.DataTableRenderer.encodeEnd(DataTableRenderer.java:93)
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:949)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1912)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1908)
    at javax.faces.render.Renderer.encodeChildren(Renderer.java:176)
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:918)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1905)
    at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:638)
    at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:183)
    at javax.faces.component.UIForm.visitTree(UIForm.java:405)
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1747)
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1747)
    at com.sun.faces.context.PartialViewContextImpl.processComponents(PartialViewContextImpl.java:423)
    at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:342)
    at org.primefaces.context.PrimePartialViewContext.processPartial(PrimePartialViewContext.java:65)
    at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:252)
    at org.omnifaces.context.OmniPartialViewContext.processPartial(OmniPartialViewContext.java:122)
    at javax.faces.component.UIViewRoot.encodeChildren(UIViewRoot.java:1124)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1905)
    at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:465)
    at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:194)
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:151)
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:151)
    at org.omnifaces.viewhandler.OmniViewHandler.renderView(OmniViewHandler.java:155)
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:126)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:223)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:671)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at ar.com.dux.jsf.filters.CacheFilter.doFilter(CacheFilter.java:27)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at ar.com.dux.jsf.filters.SecurityFilter.doFilter(SecurityFilter.java:84)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:89)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.omnifaces.filter.GzipResponseFilter.doFilter(GzipResponseFilter.java:183)
    at org.omnifaces.filter.HttpFilter.doFilter(HttpFilter.java:108)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:196)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:698)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:364)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:624)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:831)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1650)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
    at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:748)

我们正在使用JSF 2.3.9，PrimeFaces 8.0，Omnifaces 3.11，Tomcat 8，并且Bean被ViewScop（Javax.faces.view.view.view.viewscoped not Omnifaces）。

该页面非常复杂，但是他的基本功能是生成发票，因此我们有一个用于客户数据的部分，另一个用于添加到发票中的产品的部分，另一部分用于付款信息（使用facelets包括）。部分具有带有分类的数据表，并从所有其他部分进行了更新。

原文

We had an outage recently, and in the log of our application, we can see this exception.
Looks like the data in a table is being modified while primefaces is sorting ¿How is this possible?

This is something that doesn't happen frequently, it just happened once in a production enviroment.
Also this same stack trace repeats like ten or more times in seconds.

05-Jul-2022 19:13:53.583 SEVERE [http-nio-8080-exec-746] com.sun.faces.application.view.FaceletViewHandlingStrategy.handleRenderException Error Rendering View[/pages/example.xhtml]
java.util.ConcurrentModificationException
    at java.util.ArrayList.sort(ArrayList.java:1466)
    at java.util.Collections.sort(Collections.java:177)
    at org.primefaces.component.datatable.feature.SortFeature.singleSort(SortFeature.java:167)
    at org.primefaces.component.datatable.DataTableRenderer.preRender(DataTableRenderer.java:141)
    at org.primefaces.component.datatable.DataTableRenderer.encodeEnd(DataTableRenderer.java:93)
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:949)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1912)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1908)
    at javax.faces.render.Renderer.encodeChildren(Renderer.java:176)
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:918)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1905)
    at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:638)
    at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:183)
    at javax.faces.component.UIForm.visitTree(UIForm.java:405)
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1747)
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1747)
    at com.sun.faces.context.PartialViewContextImpl.processComponents(PartialViewContextImpl.java:423)
    at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:342)
    at org.primefaces.context.PrimePartialViewContext.processPartial(PrimePartialViewContext.java:65)
    at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:252)
    at org.omnifaces.context.OmniPartialViewContext.processPartial(OmniPartialViewContext.java:122)
    at javax.faces.component.UIViewRoot.encodeChildren(UIViewRoot.java:1124)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1905)
    at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:465)
    at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:194)
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:151)
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:151)
    at org.omnifaces.viewhandler.OmniViewHandler.renderView(OmniViewHandler.java:155)
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:126)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:223)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:671)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at ar.com.dux.jsf.filters.CacheFilter.doFilter(CacheFilter.java:27)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at ar.com.dux.jsf.filters.SecurityFilter.doFilter(SecurityFilter.java:84)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:89)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.omnifaces.filter.GzipResponseFilter.doFilter(GzipResponseFilter.java:183)
    at org.omnifaces.filter.HttpFilter.doFilter(HttpFilter.java:108)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:196)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:698)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:364)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:624)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:831)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1650)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
    at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:748)

We are using JSF 2.3.9, Primefaces 8.0, Omnifaces 3.11, Tomcat 8 and the bean is ViewScoped (javax.faces.view.ViewScoped not omnifaces).

The page is very complex, but his basic function is to generate an invoice so we have a section for the client data, another section for products that are added to the invoice and another section for payment info (using facelets include).These last two sections have datatables with sorting, and are updated from all the other sections.

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皓月长歌 2025-02-20 08:32:23

该问题有两个可能的原因：

在同一列表上工作的多个线程

一个单个线程在迭代时修改列表（例如计算或foreach）
第二个选项不应是此处的原因，因为stacktrace仅包含 arraylist.sort 的调用。我不认为，JDK在那个地方是错误的。

第一个选项更有可能：

同时ajax请求

com.sun.faces.context.partialviewcontextimpl.processpartial 应该是一个迹象，这是一种迹象，这是在AJAX期间发生的
由于bean范围错误的共享列表 - 例如会话甚至应用程序
正确的bean范围，但列表来自共享源

您可以尝试1个解决方案中的1个...

包装您的衬里bean list collections.synchronizedlist .... list＆lt; object＆gt; objlist = collections.synchronizedList（new arrayList＆lt; object＆gt;（））;
尝试 java.util.concurrent.copyonwritearraylist https://docs.oracle.com/en/java/javase/11/docs/api/java.base.base/java/java/util/concurrent/copyonwritearraylist.html
修改很昂贵，但不需要阅读。