Java Web App over App Engine 错误访问答案

【问题标题】：Java Web App over App Engine error accessJava Web App over App Engine 错误访问
【发布时间】：2015-03-24 06:15:45
【问题描述】：

我正在使用 Google App Engine 开发 Java Web 应用程序，该应用程序使用 Maven、JSF 和 Objectify，并且在 devserver 中运行良好，但在生产中出现以下错误：

com.sun.faces.config.ConfigureListener contextInitialized: Critical error during deployment: 
  java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "modifyThreadGroup")
    at java.security.AccessControlContext.checkPermission(AccessControlContext.java:375)
    at java.security.AccessController.checkPermission(AccessController.java:565)
    at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
    at com.google.apphosting.runtime.security.CustomSecurityManager.checkPermission(CustomSecurityManager.java:56)
    at com.google.apphosting.runtime.security.CustomSecurityManager.checkAccess(CustomSecurityManager.java:131)
    at java.lang.ThreadGroup.checkAccess(ThreadGroup.java:315)
    at java.lang.Thread.init(Thread.java:378)
    at java.lang.Thread.<init>(Thread.java:575)
    at com.sun.faces.util.MojarraThreadFactory.newThread(MojarraThreadFactory.java:74)
    at java.util.concurrent.ThreadPoolExecutor$Worker.<init>(ThreadPoolExecutor.java:599)
    at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:931)
    at java.util.concurrent.ThreadPoolExecutor.ensurePrestart(ThreadPoolExecutor.java:1611)
    at java.util.concurrent.ScheduledThreadPoolExecutor.delayedExecute(ScheduledThreadPoolExecutor.java:305)
    at java.util.concurrent.ScheduledThreadPoolExecutor.scheduleAtFixedRate(ScheduledThreadPoolExecutor.java:542)
    at com.sun.faces.config.ConfigureListener.initConfigMonitoring(ConfigureListener.java:480)
    at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:227)
    at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:548)
    at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
    at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
    at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
    at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
    at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler(AppVersionHandlerMap.java:199)
    at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java:174)
    at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:134)
    at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:484)
    at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:438)
    at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:445)
    at com.google.tracing.CurrentContext.runInContext(CurrentContext.java:220)
    at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:309)
    at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:301)
    at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:442)
    at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:251)
    at java.lang.Thread.run(Thread.java:724)

有人遇到过类似的问题，可以帮助我提示或知道解决方案吗？

【问题讨论】：

标签： java google-app-engine maven objectify

【解决方案1】：

这个问题已经被问过很多次了，例子看下面的问题：

线程 are disallowed in App Engine 的某些操作，并且您的某些代码违反了规则。

【讨论】：

是的，感谢您的回答，确实，应用引擎不允许对属于 jsf 一部分的线程进行某些操作，我找到了解决此问题的具体解决方案，很快我将发布此问题。