GAE + JSF: ExpressionFactory "com.sun.el.ExpressionFactoryImpl" kann nicht instanziiert werden
Problem
Die JSF-Anwendung kann in der lokalen GAE-Umgebung mit der folgenden Entwicklungsumgebung bereitgestellt werden:
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JSF 2.1.7
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Google App Engine SDK 1.6.3
Drücken Sie jedoch die Fehlermeldung, während Sie in der GAE-Produktionsumgebung bereitgestellt werden. Unten finden Sie die protokollierten Fehlermeldungen von GAE.
com.sun.faces.config.ConfigureListener installExpressionFactory: Unable to instantiate ExpressionFactory 'com.sun.el.ExpressionFactoryImpl'
E 2012-04-24 03:37:37.989
com.sun.faces.config.ConfigureListener contextInitialized: Critical error during deployment:
com.sun.faces.config.ConfigurationException:
It appears the JSP version of the container is older than 2.1 and unable to locate the EL RI expression factory,
com.sun.el.ExpressionFactoryImpl. If not using JSP or the EL RI, make sure the context initialization parameter,
com.sun.faces.expressionFactory, is properly set.
at com.sun.faces.config.ConfigureListener.registerELResolverAndListenerWithJsp(ConfigureListener.java:662)
at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:243)
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:202)
at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java:171)
at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:123)
at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:446)
at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:449)
at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:455)
at com.google.tracing.TraceContext.runInContext(TraceContext.java:695)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:333)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:325)
at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:453)
at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:251)
at java.lang.Thread.run(Thread.java:679)
Lösung
Dieel-ri.jar sind in GAE + JSF erforderlich. Um es zu lösen, suchen und holen Sie sichel-ri.jar und kopieren Sie es in Ihren Ordner "/war/lib".
Where to get el-ri.jar?
Der schnellere Weg besteht darin,el-ri.jar vonMaven repository zu erhalten.