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Posted to fop-users@xmlgraphics.apache.org by Asbjørn Reglund Thorsen <a....@usit.uio.no> on 2006/04/04 11:08:20 UTC

Problem using barcode4j plugin

I can't get the barcode4j plugin to work with FOP. When I use 
barcode4j-1.0 and fop-0.91beta I get this error message:

Exception in thread "main" java.lang.IncompatibleClassChangeError: 
Implementing class
        at java.lang.ClassLoader.defineClass0(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:509)
        at 
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:246)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:54)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:193)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:186)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:265)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:262)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:322)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:130)
        at 
org.apache.fop.fo.FOTreeBuilder.addElementMapping(FOTreeBuilder.java:164)
        at 
org.apache.fop.fo.FOTreeBuilder.setupDefaultMappings(FOTreeBuilder.java:146)
        at org.apache.fop.fo.FOTreeBuilder.<init>(FOTreeBuilder.java:117)
        at org.apache.fop.apps.Fop.getDefaultHandler(Fop.java:116)
        at org.apache.fop.cli.InputHandler.render(InputHandler.java:99)
        at org.apache.fop.cli.Main.startFOP(Main.java:167)
        at org.apache.fop.cli.Main.main(Main.java:200)
make: *** [pdf] Error 1

When I use barcode4j-1.0 and fop-0.20.5 I get this error msg:

xsltproc --output tilbud.fo tilbud.xsl tilbud.xml
compilation error: file tilbud.xsl line 43 element barcode
Namespaces prefix barcode used for multiple namespaces
runtime error: file tilbud.xsl line 43 element barcode
xsltApplyOneTemplate: failed to find extension barcode
error: file tilbud.xml
xsltRunStylesheet : run failed
make: *** [pdf] Error 9

I get the same error for each of:
CLASSPATH=/site/software/barcode4j-1.0/build/barcode4j-fop-ext-0.20.5-complete.jar:$CLASSPATH 

CLASSPATH=/site/software/barcode4j-1.0/build/barcode4j.jar:/site/software/barcode4j-1.0/build/barcode4j-fop-ext-0.20.5.jar:$CLASSPATH 

and
CLASSPATH=/site/software/barcode4j-1.0/build/barcode4j-light.jar:$CLASSPATH

Can anyone tell me what's wrong ?

Apache Avalon has closed. Is there a substitute that I can use ? Or is 
it possible to generate barcodes without that framework ?

I have attached the xsl-file.

-- 
Asbj�rn Thorsen

"HAKONA MATATA" ;-)

Re: Problem using barcode4j plugin

Posted by Jeremias Maerki <de...@jeremias-maerki.ch>.
(Comments inline...)

On 04.04.2006 11:08:20 Asbjørn Reglund Thorsen wrote:
> I can't get the barcode4j plugin to work with FOP. When I use 
> barcode4j-1.0 and fop-0.91beta I get this error message:
> 
> Exception in thread "main" java.lang.IncompatibleClassChangeError: 

That is to be expected. The extension infrastructure in FOP 0.91beta is
different (and more advanced) than the one from FOP 0.20.5 so the old
FOP extension for 0.20.5 don't work for 0.91 anymore. I've written a new
FOP extension for 0.91 and later. It's not released, yet, but you can
build it yourself if you download the Barcode4J sources from
SourceForge's CVS. To build the new FOP extension place a file called
"build-local.properties" in the root directory of the Barcode4J checkout
and place the following line there:
fop.home=<path to FOP 0.91beta or FOP Trunk>


> Implementing class
>         at java.lang.ClassLoader.defineClass0(Native Method)
>         at java.lang.ClassLoader.defineClass(ClassLoader.java:509)
>         at 
> java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
>         at java.net.URLClassLoader.defineClass(URLClassLoader.java:246)
>         at java.net.URLClassLoader.access$100(URLClassLoader.java:54)
>         at java.net.URLClassLoader$1.run(URLClassLoader.java:193)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at java.net.URLClassLoader.findClass(URLClassLoader.java:186)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
>         at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:265)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:262)
>         at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:322)
>         at java.lang.Class.forName0(Native Method)
>         at java.lang.Class.forName(Class.java:130)
>         at 
> org.apache.fop.fo.FOTreeBuilder.addElementMapping(FOTreeBuilder.java:164)
>         at 
> org.apache.fop.fo.FOTreeBuilder.setupDefaultMappings(FOTreeBuilder.java:146)
>         at org.apache.fop.fo.FOTreeBuilder.<init>(FOTreeBuilder.java:117)
>         at org.apache.fop.apps.Fop.getDefaultHandler(Fop.java:116)
>         at org.apache.fop.cli.InputHandler.render(InputHandler.java:99)
>         at org.apache.fop.cli.Main.startFOP(Main.java:167)
>         at org.apache.fop.cli.Main.main(Main.java:200)
> make: *** [pdf] Error 1
> 
> When I use barcode4j-1.0 and fop-0.20.5 I get this error msg:
> 
> xsltproc --output tilbud.fo tilbud.xsl tilbud.xml
> compilation error: file tilbud.xsl line 43 element barcode
> Namespaces prefix barcode used for multiple namespaces

That should have been your clue. You've defined the "barcode" namespace
prefix twice, once for the Saxon extension and once further down for the
FOP extension. Remove the declaration for the Saxon extension if you
use the FOP extension.

> runtime error: file tilbud.xsl line 43 element barcode
> xsltApplyOneTemplate: failed to find extension barcode
> error: file tilbud.xml
> xsltRunStylesheet : run failed
> make: *** [pdf] Error 9
> 
> I get the same error for each of:
> CLASSPATH=/site/software/barcode4j-1.0/build/barcode4j-fop-ext-0.20.5-complete.jar:$CLASSPATH 
> 
> CLASSPATH=/site/software/barcode4j-1.0/build/barcode4j.jar:/site/software/barcode4j-1.0/build/barcode4j-fop-ext-0.20.5.jar:$CLASSPATH 
> 
> and
> CLASSPATH=/site/software/barcode4j-1.0/build/barcode4j-light.jar:$CLASSPATH
> 
> Can anyone tell me what's wrong ?

It's not anything with the classpath, but something in your stylesheet
as the "compilation error" (coming from the XSLT processor) indicates.

> Apache Avalon has closed. Is there a substitute that I can use ? Or is 
> it possible to generate barcodes without that framework ?

Apache Excalibur has taken over Avalon Framework. You don't need to
bother with that since FOP itself uses Avalon Framework. It is possible
to generate barcodes without Avalon Framework but in the FOP environment,
Avalon Framework is automatically used.

> I have attached the xsl-file.
> 
> -- 
> Asbjørn Thorsen
> 
> "HAKONA MATATA" ;-)
> 



Jeremias Maerki


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