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From "Vamsavardhana Reddy" <c1vams...@gmail.com>
Subject Re: ClassLoader.getSystemResourceAtStream() within Geronimo utility JAR?
Date Sun, 30 Mar 2008 16:57:09 GMT
Are you packaging this jar in WEB-INF\lib directory in the war file?

++Vamsi

On Sun, Mar 30, 2008 at 10:22 PM, Cedric Hurst <cedric.hurst@gmail.com>
wrote:

>
> I have a utility JAR which reads from a flat file ("cities.txt") which is
> contained within the JAR itself.  This file is used to initially populate
> a
> collection in memory.  I'm using the ClassLoader.getSystemResourceAsStream
> ()
> method to retrieve this flat file as an InputStream within my utility JAR
> class.  In Java SE, I can add the utility JAR the the classpath of a
> client
> and it will find the flat file just fine.  But if I try to deploy this JAR
> to Geronimo and use it within a web application,
> ClassLoader.getSystemResourcesAsStream() returns null.  I'm guessing
> Geronimo is doing some tricky things which involve overriding the system
> classloader.  Here's the stack trace.
>
> java.lang.NullPointerException
>        at java.io.Reader.<init>(Reader.java:82)
>        at java.io.InputStreamReader.<init>(InputStreamReader.java:89)
>        at util.cityLookup.Lookup.init(Lookup.java:21)
>        at util.cityLookup.Lookup.checkInitilization(Lookup.java:45)
>        at util.cityLookup.Lookup.citiesBeginningWith(Lookup.java:52)
>        at web.jsf.CitySuggester.getCityList(CitySuggester.java:10)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java
> :79)
>        at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(
> DelegatingMethodAccessorImpl.java:43)
>        at java.lang.reflect.Method.invoke(Method.java:618)
>        at org.apache.el.parser.AstValue.invoke(AstValue.java:131)
>        at org.apache.el.MethodExpressionImpl.invoke(
> MethodExpressionImpl.java:276)
>        at
> org.apache.myfaces.el.convert.MethodExpressionToMethodBinding.invoke(
> MethodExpressionToMethodBinding.java:73)
>        ... 30 more
>
>
> I've attached the JAR file.  Is there an alternate means of accessing the
> flat file within my Lookup class (without using absolute paths)?
>
> http://www.nabble.com/file/p16384195/cityLookup-1.0-NABBLE.jar
> cityLookup-1.0-NABBLE.jar<http://www.nabble.com/file/p16384195/cityLookup-1.0-NABBLE.jarcityLookup-1.0-NABBLE.jar>
> --
> View this message in context:
> http://www.nabble.com/ClassLoader.getSystemResourceAtStream%28%29-within-Geronimo-utility-JAR--tp16384195s134p16384195.html
> Sent from the Apache Geronimo - Users mailing list archive at Nabble.com.
>
>

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