OpenSAML user discussion

[Chad La Joie <>]

The verbose output of the class loader has nothing to do with whether 
classes are endorsed.  It just means that the class loader has loaded 
those particular classes.  Sun's classes are probably used internally by 
some of Sun's code.

Putting libraries in the WEB-INF/lib directory also doesn't endorse them 
(in fact it can mess up and endorsement).

What documentation, for your servlet container are you following to do 
the endorsement?

Prasanna Krishna wrote:
> Hello -
>
> Further to what I stated in my mail, I tried the following:
>
> I removed xercesImpl.jar (size:1196 KB) from apache/common/endorsed and 
> also apache/..web-inf/lib to check if SUN's xerces is being picked up 
> and whats the behavior.
>
> I got the fatal message from openSAML as
>
> ---
>
> OpenSAML requires an xml parser that supports JAXP 1.3 and DOM3.
> The JVM is currently configured to use the Sun XML parser, which is known
> to be buggy and can not be used with OpenSAML.  Please endorse a functional
> JAXP library(ies) such as Xerces and Xalan.  For instructions on how to 
> endorse
> a new parser see 
> http://java.sun.com/j2se/1.5.0/docs/guide/standards/index.html
>
> ---
>
> This looks to me that xerces is being properly endorsed when I place the 
> same in endorsed folder.  So my question is why then I am finding 
> com.sun.org.apache..... entries in my verbose output.
>
> The place where it blows of is
> at ValidatorImpl.process(DOMSource, DOMResult)
> at ValidatorImpl.validate(Source,Result)
> at ValidatorImpl(Validator).validate(Source)
>
> Am I not adding any other required jar files to apache/web-inf/lib or am 
> missing something in the process.
>
> Any input is greatly appreciated.
>
> Regards
> Prasanna Krishna
>
> > From: "Prasanna Krishna" 
> > <>
> > Date: Fri, 13 Jul 2007 04:13:18 +0000
> >
> > Hi Chad -
> >
> > Probably I was not clear.
> >
> > When I said
> >
> > > > DefaultBootStrap.bootstrap but this time it wouldn't throw the 
> > > > exception reported in this mail.
> >
> > I meant a similar thread where Perez found the exception
> > https://mail.internet2.edu/wws/arc/mace-opensaml-users/2007-06/msg00019.html 
> >
> >
> > I was getting this exception but once I picked up the latest xalan & 
> > xerces from apache site this exception no longer occurs but when I 
> > 'step in' in eclipse at bootstrap() method, it drills down till a 
> > point where validation of XML is being done.  Surprisingly though I 
> > have put an exception block & printing stack trace nothing is reported 
> > (which earlier was being reported when using older versions of 
> > xerces/xalan).
> >
> > I thought probably any of the libraries required may be missing but I 
> > wouldn't find NoClassFound too in the console.
> >
> > When I said it doesn't do anything I meant, it skips all the 
> > statements after bootstrap() statement in my method and comes out of 
> > the program without reporting anything.
> >
> > The examples I pasted in my mail is to just provide an info that 
> > xerces & xalan of apache endoresed folder are indeed being picked up.
> >
> > My assumption is, at few places classes from apache xerces being 
> > picked up but at few other places classes from sun is picked up.
> >
> > Hope I could provide better info.
> >
> > Regards
> > Prasanna Krishna
> >
> > > From: Chad La Joie 
> > > <>
> > > Date: Thu, 12 Jul 2007 23:07:57 -0400
> > >
> > > JAXP is an interface, Xerces + Xalan happen to provide one 
> > > implementation (the only one which we know works).  Sun happens to 
> > > ship a pre-alpha release of a really old version of Xerces which is 
> > > the com.sun.org.apache.... classes.  These are horribly broken and 
> > > fail on anything but the simplest of XML parsing use cases.
> > >
> > > If you see com.sun.org.apache...  classes being used then Apache 
> > > released and maintained versions of Xerces and Xalan are not being used.
> > >
> > > At the moment you seem to be providing contradictory information.  
> > > You said that it "just doesn't do anything" and then "looks like it 
> > > fails while validating".  Is there some error you are seeing that you 
> > > didn't include?  The loading of classes that you included is not a 
> > > problem in and of itself, the JVM will load thousands of classes as 
> > > it runs.
> > >
> > >
> > >  wrote:
> > > > Hello -
> > > >
> > > > While working with openSAML I still have some problem at 
> > > > DefaultBootStrap.bootstrap but this time it wouldn't throw the 
> > > > exception reported in this mail.  It just doesn't do anything after 
> > > > reaching a specific point in the stack.  But looks like it still 
> > > > fails while validating the XML.
> > > >
> > > > Also I switched on the verbose and this is what I find:
> > > > First few lines:
> > > >
> > > > [Opened C:\apache-tomcat-5.5.17\common\endorsed\xalan.jar]
> > > > [Opened C:\apache-tomcat-5.5.17\common\endorsed\xercesImpl.jar]
> > > > [Opened C:\Program Files\Java\jre1.5.0_07\lib\rt.jar]
> > > > .....
> > > >
> > > > I find many classes loaded from xerces - An exmaple
> > > > [Loaded org.apache.xerces.jaxp.SAXParserFactoryImpl from 
> > > > C:\apache-tomcat-5.5.17\common\endorsed\xercesImpl.jar]
> > > >
> > > > I also find many classes loaded from xalan - An example
> > > > [Loaded org.apache.xalan.processor.TransformerFactoryImpl from 
> > > > C:\apache-tomcat-5.5.17\common\endorsed\xalan.jar]
> > > >
> > > > I also find many classes loaded from rt.jar that are related to xml 
> > > > validation
> > > > Ex:
> > > > [Loaded 
> > > > com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorImpl 
> > > > from C:\Program Files\Java\jre1.5.0_07\lib\rt.jar]
> > > > [Loaded 
> > > > com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorImpl$1 
> > > > from C:\Program Files\Java\jre1.5.0_07\lib\rt.jar]
> > > > [Loaded 
> > > > com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorImpl$2 
> > > > from C:\Program Files\Java\jre1.5.0_07\lib\rt.jar]
> > > >
> > > >
> > > > Is this behavior correct?
> > > > I read 
> > > > http://www.ibm.com/developerworks/xml/library/x-javaxmlvalidapi.html 
> > > > that jaxp is bundled with xerces.
> > > >
> > > > Am I missing something which needs to be resolved?
> > > >
> > > > I appreciate any help.
>
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Chad La Joie             2052-C Harris Bldg
OIS-Middleware           202.687.0124