Based on the stack trace, it seems you are using Xalan for xsl
transformation. It is recommended to use Saxon 6.5.5 with Webhelp which too
is a Java impl. You can point to Saxon by setting xslt-processor-classpath
in build.properties to the location of your saxon jar. In the meanwhile,
you should also set xercesImpl.jar and xml-apis.jar properties.
# Modify the follosing so that they point to your local
# copy of the jars indicated:
# * Saxon 6.5 jar
# * Xerces 2: xercesImpl.jar
# * xml-commons: xml-apis.jar
xslt-processor-classpath=/usr/share/java/saxon-6.5.5.jar
xercesImpl.jar=/usr/share/java/xercesImpl.jar
xml-apis.jar=/usr/share/java/xml-apis.jar
HTH
Kasun
On Sat, Sep 1, 2012 at 6:38 PM, Marc Boorshtein <
mboorshtein@gmail.com>wrote:
> I'm trying to get webhelp working but am hitting a snag. When I try
> to run webhelp on the test xml I get the following exception:
>
>
>
> /home/mlb/workspace-x1/AutoIDM-Trunk/dist/doc/manual/prelude/docbook-xsl-1.77.1/webhelp/build.xml:61:
> javax.xml.transform.TransformerException:
> java.lang.NullPointerException
> at
> com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:732)
> at
> com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:336)
> at
> org.apache.tools.ant.taskdefs.optional.TraXLiaison.transform(TraXLiaison.java:195)
> at
> org.apache.tools.ant.taskdefs.XSLTProcess.process(XSLTProcess.java:853)
> at
> org.apache.tools.ant.taskdefs.XSLTProcess.execute(XSLTProcess.java:389)
> at
> org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
> at org.apache.tools.ant.Task.perform(Task.java:348)
> at org.apache.tools.ant.Target.execute(Target.java:392)
> at org.apache.tools.ant.Target.performTasks(Target.java:413)
> at
> org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
> at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
> at
> org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
> at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
> at org.apache.tools.ant.Main.runBuild(Main.java:811)
> at org.apache.tools.ant.Main.startAnt(Main.java:217)
> at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)
> at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)
> Caused by: java.lang.NullPointerException
> at
> com.sun.org.apache.xalan.internal.xsltc.runtime.BasisLibrary.referenceToNodeSet(BasisLibrary.java:998)
> at webhelp.l10n$dot$language()
> at webhelp.topLevel()
> at webhelp.transform()
> at
> com.sun.org.apache.xalan.internal.xsltc.runtime.AbstractTranslet.transform(AbstractTranslet.java:605)
> at
> com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:725)
> ... 21 more
> ---------
> java.lang.NullPointerException
> at
> com.sun.org.apache.xalan.internal.xsltc.runtime.BasisLibrary.referenceToNodeSet(BasisLibrary.java:998)
> at webhelp.l10n$dot$language()
> at webhelp.topLevel()
> at webhelp.transform()
> at
> com.sun.org.apache.xalan.internal.xsltc.runtime.AbstractTranslet.transform(AbstractTranslet.java:605)
> at
> com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:725)
> at
> com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:336)
> at
> org.apache.tools.ant.taskdefs.optional.TraXLiaison.transform(TraXLiaison.java:195)
> at
> org.apache.tools.ant.taskdefs.XSLTProcess.process(XSLTProcess.java:853)
> at
> org.apache.tools.ant.taskdefs.XSLTProcess.execute(XSLTProcess.java:389)
> at
> org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
> at org.apache.tools.ant.Task.perform(Task.java:348)
> at org.apache.tools.ant.Target.execute(Target.java:392)
> at org.apache.tools.ant.Target.performTasks(Target.java:413)
> at
> org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
> at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
> at
> org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
> at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
> at org.apache.tools.ant.Main.runBuild(Main.java:811)
> at org.apache.tools.ant.Main.startAnt(Main.java:217)
> at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)
> at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)
>
> I'm using xsl-1.77.1. I found a message on this list from february
> that said try the snapshot, but 1.77.1 is from June and I didn't see
> any other resolution. Any help would be greatly appreciated.
>
> Thanks
> Marc
>
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--
~~~*******'''''''''''''*******~~~
*Kasun Gajasinghe*
Software Engineer; WSO2 Inc.;
http://wso2.com,*linked-in: *http://lk.linkedin.com/in/gajasinghe*
*
*blog: **http://blog.kasunbg.org* <http://blog.kasunbg.org/>
*
twitter: **http://twitter.com/kasunbg* <http://twitter.com/kasunbg>