JSF Exception

rmacher · 2. Okt 2014

Hallo allerseits

Ich finde gelegentlich solche Meldungen in der log-Datei:

Java:

2014-10-01 13:16:44 ERROR EigenesThemaManagedBean:702 - Fehler beim Erstellen des PDFs
org.apache.catalina.connector.ClientAbortException: java.io.IOException: Eine vorhandene Verbindung wurde vom Remotehost geschlossen
	at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:389)
	at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:426)
	at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:339)
	at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:414)
	at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:402)
	at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:97)
	at java.io.BufferedOutputStream.write(BufferedOutputStream.java:122)
	at ch.hslu.bap.web.pdf.PdfHandler.donwloadPdf(PdfHandler.java:48)
	at ch.hslu.bap.web.beans.thema.eingabe.eigenthema.EigenesThemaManagedBean.createPdf(EigenesThemaManagedBean.java:699)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.el.parser.AstValue.invoke(AstValue.java:245)
	at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:277)
	at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
	at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:87)
	at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
	at javax.faces.component.UICommand.broadcast(UICommand.java:315)
	at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)
	at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282)
	at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
	at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at ch.hslu.bap.web.security.CacheFilterHandler.doFilter(CacheFilterHandler.java:50)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at ch.hslu.bap.web.beans.filter.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:56)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:615)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:136)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:526)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:655)
	at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1566)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1523)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:745)
	Suppressed: org.apache.catalina.connector.ClientAbortException: java.io.IOException: Eine vorhandene Verbindung wurde vom Remotehost geschlossen
		at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:389)
		at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:426)
		at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:338)
		at org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:291)
		at org.apache.catalina.connector.CoyoteOutputStream.close(CoyoteOutputStream.java:151)
		at java.io.FilterOutputStream.close(FilterOutputStream.java:160)
		at ch.hslu.bap.web.pdf.PdfHandler.donwloadPdf(PdfHandler.java:52)
		... 45 more
	Caused by: java.io.IOException: Eine vorhandene Verbindung wurde vom Remotehost geschlossen
		at sun.nio.ch.SocketDispatcher.write0(Native Method)
		at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:51)
		at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
		at sun.nio.ch.IOUtil.write(IOUtil.java:51)
		at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:487)
		at org.apache.tomcat.util.net.SecureNioChannel.flush(SecureNioChannel.java:134)
		at org.apache.tomcat.util.net.SecureNioChannel.write(SecureNioChannel.java:489)
		at org.apache.tomcat.util.net.NioBlockingSelector.write(NioBlockingSelector.java:101)
		at org.apache.tomcat.util.net.NioSelectorPool.write(NioSelectorPool.java:173)
		at org.apache.coyote.http11.InternalNioOutputBuffer.writeToSocket(InternalNioOutputBuffer.java:139)
		at org.apache.coyote.http11.InternalNioOutputBuffer.flushBuffer(InternalNioOutputBuffer.java:244)
		at org.apache.coyote.http11.InternalNioOutputBuffer.addToBB(InternalNioOutputBuffer.java:189)
		at org.apache.coyote.http11.InternalNioOutputBuffer.access$000(InternalNioOutputBuffer.java:41)
		at org.apache.coyote.http11.InternalNioOutputBuffer$SocketOutputBuffer.doWrite(InternalNioOutputBuffer.java:320)
		at org.apache.coyote.http11.filters.IdentityOutputFilter.doWrite(IdentityOutputFilter.java:84)
		at org.apache.coyote.http11.AbstractOutputBuffer.doWrite(AbstractOutputBuffer.java:257)
		at org.apache.coyote.Response.doWrite(Response.java:492)
		at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:384)
		... 51 more
Caused by: java.io.IOException: Eine vorhandene Verbindung wurde vom Remotehost geschlossen
	at sun.nio.ch.SocketDispatcher.write0(Native Method)
	at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:51)
	at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
	at sun.nio.ch.IOUtil.write(IOUtil.java:51)
	at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:487)
	at org.apache.tomcat.util.net.SecureNioChannel.flush(SecureNioChannel.java:134)
	at org.apache.tomcat.util.net.SecureNioChannel.write(SecureNioChannel.java:489)
	at org.apache.tomcat.util.net.NioBlockingSelector.write(NioBlockingSelector.java:101)
	at org.apache.tomcat.util.net.NioSelectorPool.write(NioSelectorPool.java:173)
	at org.apache.coyote.http11.InternalNioOutputBuffer.writeToSocket(InternalNioOutputBuffer.java:139)
	at org.apache.coyote.http11.InternalNioOutputBuffer.addToBB(InternalNioOutputBuffer.java:197)
	at org.apache.coyote.http11.InternalNioOutputBuffer.access$000(InternalNioOutputBuffer.java:41)
	at org.apache.coyote.http11.InternalNioOutputBuffer$SocketOutputBuffer.doWrite(InternalNioOutputBuffer.java:320)
	at org.apache.coyote.http11.filters.IdentityOutputFilter.doWrite(IdentityOutputFilter.java:84)
	at org.apache.coyote.http11.AbstractOutputBuffer.doWrite(AbstractOutputBuffer.java:257)
	at org.apache.coyote.Response.doWrite(Response.java:492)
	at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:384)
	... 52 more

Ähnliche Meldungen finde ich auch in der Datei xxxx-stderr.2014-xx-xx.log, allerdings ohne die erste Zeile (hat mit PDF Generierung nichts zu tun)

Eine andere Meldung, die auch in der xxxx-stderr.2014-xx-xx.log ab und zu auftaucht ist die folgende:

Java:

01-Oct-2014 13:16:44.130 INFO [http-nio-8443-exec-2] com.sun.faces.context.ExceptionHandlerImpl.throwIt Exception when handling error trying to reset the response.
 java.lang.IllegalStateException: getOutputStream() has already been called for this response
	at org.apache.catalina.connector.Response.getWriter(Response.java:548)
	at org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:212)
	at javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:103)
	at com.sun.faces.context.ExternalContextImpl.getResponseOutputWriter(ExternalContextImpl.java:834)
	at com.sun.faces.application.view.FaceletViewHandlingStrategy.createResponseWriter(FaceletViewHandlingStrategy.java:1169)
	at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:390)
	at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131)
	at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337)
	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)
	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:721)
	at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:584)
	at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:523)
	at org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:417)
	at org.apache.catalina.core.StandardHostValve.throwable(StandardHostValve.java:367)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:166)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:526)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:655)
	at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1566)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1523)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:745)

Obwohl die Applikation anschliessend weiterhin problemlos funktioniert, habe ich ein ungutes Gefühl, wenn ich solche Meldungen finde. Meine Fragen ist:

Was könnte der Grund für diese Meldungen sein? Kann es sein, dass der Client den Browser einfach geschlossen hat, ohne sich ordentlich abgemeldet zu haben? Oder, liegt der Grund (wie ich vermute) doch in meinem Code? Bei der ersten Meldung (ist in meiner Log-Datei zweimal zu finden) könnte ich mir vorstellen, dass der Fehler eher von meinem Code kommt, aber bei der zweiten Meldung bin ich im Moment etwas ratlos.

Ich arbeite mit JSF und PrimeFaces 4.0, als ServletContainer wird Tomcat 8.0.9 verwendet.

Vielen Dank.

Faberix · 8. Okt 2014

Hallo,

In den Fehlermeldungen wird dir angezeigt, wo die Exception passiert ist (at und dann der Klassenpfad und ggf. die Linie). Schau doch mal, ob eine dieser Angaben in deinem Code ist, dann weisst du, wo der Fehler ist.

mfg, Faberix

BuckRogers · 17. Nov 2014

Ich könnte mir vorstellen dass es sich um ein Problem beim Download handelt. Etwas ähnliches kommt mir unter wenn man das PDF runterladen möchte, dann aber im Fenster(speichern oder öffnen), abbricht. Ganz normaler Vorgang, die Applikation läuft weiter, aber im log gibt es eine Exception. In meinem Fall: SocketCloseException.... einfach mal den log laufen lassen und dabei mit PDF rumspielen. Sollte reproduzierbar sein denke ich.

Zeile 11 deines ersten Stacktrace snippet zeigt dass der PDF-Handler eine downloadmethode durchläuft. Es wird wärmer.

	Titel	Forum	Antworten	Datum
D	Sessiontimeout Exception bei Weiterleitung	Web Tier	10	17. Nov 2012
M	Exception beim Erstellen einer Query	Web Tier	9	8. Jun 2012
C	Tomcat + Eclipselink = NotSerializable Exception?	Web Tier	2	30. Mai 2012
D	JSF EL #{not null bean.property} Parse exception	Web Tier	2	9. Okt 2011
O	Connection Pool: "Timeout waiting for idle object" Exception	Web Tier	3	26. Aug 2011
L	JSF: Property not found Exception	Web Tier	2	4. Dez 2010
M	JSP & Hibernate Exception	Web Tier	3	24. Okt 2010
S	Arrayliste bei nullprüfung, nullpointer Exception...	Web Tier	2	25. Mai 2010
A	GWT & MYSQL - Exception while dispatching incoming RPC call	Web Tier	3	8. Mrz 2010
L	Grundlegende Fragen zum Exception-Handling	Web Tier	8	6. Jan 2010
R	Exception? Was für ein Fehler?	Web Tier	3	24. Aug 2009
W	RichFaces converter in orderingList wirft exception	Web Tier	5	17. Jul 2009
A	Duplicate Id Exception JSF	Web Tier	2	9. Dez 2008
A	Servlet Exception - missing }	Web Tier	19	23. Apr 2008
Y	JSF - Exception bei Tomcat Start	Web Tier	4	21. Apr 2008
H	facestrace - null pointer exception	Web Tier	3	26. Mrz 2008

JSF Exception

rmacher

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