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From Antony Stubbs <antony.stu...@gmail.com>
Subject Re: [S2] Struts2 / Websphere not throwing/reporting exceptions properly
Date Thu, 05 Apr 2007 03:28:50 GMT

I have submitted a PMR to IBM: 56311 999 616 and am awaiting a response...


Antony Stubbs wrote:
> 
> Code within one of my Struts 2 actions is throwing an exception, which
> doesn't seem to be being reported correctly. Websphere just seems to come
> back with error 404 page not found. 
> 
> After stepping through the Struts2 class code in eclipse I found that an
> exception was being thrown by a library I use (iBatis) and being caught by
> struts2, but not repotred ( I get the 404 requested page can't be found )
> error.
> 
> Now I'm not sure if this is a struts issue or a websphere issue. However,
> after just deploying to Tomcat - I get the expected behaviour - the
> correct exception is reported back. How frustrating. Seems to be another
> ussue related to this:
> http://www.nabble.com/Re%3A--S2-----FIXED%21--Websphere-6.1-Showcase-application%2C-Response-already-committed-warning-in-logs-p9831268.html
> 
> If I setup an error page in web.xml, the browser get's redirected to it,
> but just shows the details of the 404 exception.
> 
> I have tried to get Struts2 logging working by putting:
> log4j.rootLogger = DEBUG
> 
> log4j.appender.A1 = org.apache.log4j.ConsoleAppender
> log4j.appender.A1.layout = org.apache.log4j.PatternLayout
> log4j.appender.A1.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n
> 
> log4j.logger.org.apache.struts2=DEBUG, A1
> 
> into my log4j, but I'm not getting any Struts2 info coming out.
> 
> I've narrowed it down to a pretty simple test case, where if my action
> simply if(true)throw new Exception("test exception") straight away, I get
> back:
> java.io.FileNotFoundException: /eventProfile!list.action
> 	at
> com.ibm.ws.webcontainer.extension.DefaultExtensionProcessor.handleRequest(DefaultExtensionProcessor.java:398)
> 	at
> com.ibm.ws.wswebcontainer.extension.DefaultExtensionProcessor.handleRequest(DefaultExtensionProcessor.java:113)
> 	at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3163)
> 	at
> com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:254)
> 	at
> com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:811)
> 	at
> com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1433)
> 	at
> com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:100)
> 	at
> com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:465)
> 	at
> com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:394)
> 	at
> com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:290)
> 	at
> com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
> 	at
> com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
> 	at
> com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:152)
> 	at
> com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:213)
> 	at
> com.ibm.io.async.AbstractAsyncFuture.fireCompletionActions(AbstractAsyncFuture.java:195)
> 	at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)
> 	at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:195)
> 	at
> com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:743)
> 	at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:873)
> 	at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1469)
> 
> 
> 

-- 
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