'com.fasterxml.aalto.impl.StreamExceptionBase: Can not output XML declaration, after other output has already been done.' when trying to transform XML using XSLT

[fasterxml]

'com.fasterxml.aalto.impl.StreamExceptionBase: Can not output XML declaration, after other output has already been done.' when trying to transform XML using XSLT

[nestrada]

An additional note, when I comment the indenter.newTransformer().transform() and replace it with the line below (ie. a pass through transformer), I get the following exception:

ERREUR : 'com.fasterxml.aalto.impl.StreamExceptionBase: Trying to declare prefix xmlns (illegal as per NS 1.1 #4)'
Exception in thread "main" javax.xml.transform.TransformerException: javax.xml.stream.XMLStreamException: com.fasterxml.aalto.impl.StreamExceptionBase: Trying to declare prefix xml
ns (illegal as per NS 1.1 #4)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:719)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:313)
at xml.XMLTest.main(XMLTest.java:78)
Caused by: javax.xml.stream.XMLStreamException: com.fasterxml.aalto.impl.StreamExceptionBase: Trying to declare prefix xmlns (illegal as per NS 1.1 #4)
at com.sun.org.apache.xalan.internal.xsltc.trax.StAXStream2SAX.handleCharacters(StAXStream2SAX.java:266)
at com.sun.org.apache.xalan.internal.xsltc.trax.StAXStream2SAX.bridge(StAXStream2SAX.java:171)
at com.sun.org.apache.xalan.internal.xsltc.trax.StAXStream2SAX.parse(StAXStream2SAX.java:120)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(TransformerImpl.java:656)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:707)
... 2 more

[nestrada]

Whoops I forgot to show the stacktrace for the first exception

ERREUR : 'com.fasterxml.aalto.impl.StreamExceptionBase: Can not output XML declaration, after other output has already been done.'
Exception in thread "main" javax.xml.transform.TransformerException: com.sun.org.apache.xalan.internal.xsltc.TransletException: com.fasterxml.aalto.impl.StreamExceptionBase: Can no
t output XML declaration, after other output has already been done.
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:713)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:313)
at xml.XMLTest.main(XMLTest.java:77)
Caused by: com.sun.org.apache.xalan.internal.xsltc.TransletException: com.fasterxml.aalto.impl.StreamExceptionBase: Can not output XML declaration, after other output has already b
een done.
at com.sun.org.apache.xalan.internal.xsltc.dom.SAXImpl.characters(SAXImpl.java:1564)
at com.sun.org.apache.xalan.internal.xsltc.dom.DOMAdapter.characters(DOMAdapter.java:330)
at GregorSamsa.applyTemplates()
at GregorSamsa.template$dot$0()
at GregorSamsa.applyTemplates()
at GregorSamsa.applyTemplates()
at GregorSamsa.transform()
at com.sun.org.apache.xalan.internal.xsltc.runtime.AbstractTranslet.transform(AbstractTranslet.java:602)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:709)
... 2 more

I would be happen to attach the indenter.xsl XSLT stylesheet, but I can't seem to paste it here. Note however that it works fine using the standard XML input and output factories.

[cowtowncoder]

Hmmh. I suspect that indentation calls are what cause problems (since writing output for indentation could be taken as output preceding xml declaration).

I'll see if I can figure out what gives...

[cowtowncoder]

Can not reproduce without an example.