You have to initialize the logging. See
www.tzi.de/~svenk/poimorpher.zip
for an example how to use the serializer w/o Cocoon.
Or even better, checkout the new Morphos project in Jakarta commons sandbox.
Sven
PLISSON Sébastien (DSIT-XS/I) schrieb:
>
>> -----Message d'origine-----
>>De : PLISSON Sébastien (DSIT-XS/I)
>>Envoyé : jeudi 1 août 2002 08:11
>>À : [EMAIL PROTECTED]
>>Objet : HSSFSerializer / Null Pointer exception
>>
>>
>>Hi,
>>
>>When i try to use the HSSFSerializer from java, using an XMLReader,
>>i get a NullPointer Exception when i use the parse function.
>>
>>I use POI, Xerces and xalan from cocoon 2.0.3 distribution.
>>All is deployed on Websphere 3.5.6.
>>
>>Any idea how to solve this problem ?
>>
>>Thanks.
>>Seb
>>
>>Here is my code :
>>
>>/ Output XML to XLS
>> //
>> // Instantiate a TransformerFactory.
>> javax.xml.transform.TransformerFactory tFactory =
>>
>>javax.xml.transform.TransformerFactory.newInstance();
>> // Verify that the TransformerFactory implementation you are
>>using
>> // supports SAX input and output (Xalan-Java does!).
>> if
>>(tFactory.getFeature(javax.xml.transform.sax.SAXSource.FEATURE) &&
>>
>>tFactory.getFeature(javax.xml.transform.sax.SAXResult.FEATURE))
>> {
>> //System.out.println("sauveXMLToXLS - Debut
>>transformation");
>> // Cast the TransformerFactory to SAXTransformerFactory.
>> javax.xml.transform.sax.SAXTransformerFactory saxTFactory
>>=
>>
>>((javax.xml.transform.sax.SAXTransformerFactory) tFactory);
>> // Create a Templates ContentHandler to handle parsing of
>>the
>> // stylesheet.
>> javax.xml.transform.sax.TemplatesHandler templatesHandler
>>=
>>
>>saxTFactory.newTemplatesHandler();
>>
>> // Create an XMLReader and set its ContentHandler.
>> org.xml.sax.XMLReader reader =
>>
>>org.xml.sax.helpers.XMLReaderFactory.createXMLReader();
>> reader.setContentHandler(templatesHandler);
>>
>> // Parse the stylesheet.
>> reader.parse(xslFilename);
>>
>> // Get the Templates object (generated during the parsing
>>of the stylesheet)
>> // from the TemplatesHandler.
>> javax.xml.transform.Templates templates =
>>
>>templatesHandler.getTemplates();
>> // Create a Transformer ContentHandler to handle parsing
>>of
>> // the XML Source.
>> javax.xml.transform.sax.TransformerHandler
>>transformerHandler
>> =
>>saxTFactory.newTransformerHandler(templates);
>> // Reset the XMLReader's ContentHandler to the
>>TransformerHandler.
>> reader.setContentHandler(transformerHandler);
>>
>> // Set the ContentHandler to also function as a
>>LexicalHandler, which
>> // can process "lexical" events (such as comments and
>>CDATA).
>>
>>reader.setProperty("http://xml.org/sax/properties/lexical-handler";,
>>
>>transformerHandler);
>>
>> // Set up a Serializer to serialize the Result to a file.
>> HSSFSerializer ser = new HSSFSerializer();
>> ser.setOutputStream(xlsFile);
>>
>> //org.apache.cocoon.serialization.XMLSerializer ser = new
>>org.apache.cocoon.serialization.XMLSerializer();
>> //ser.setOutputStream(System.out);
>>
>> // The Serializer functions as a SAX ContentHandler.
>> javax.xml.transform.Result result =
>> new
>>javax.xml.transform.sax.SAXResult((org.xml.sax.ContentHandler)ser);
>> transformerHandler.setResult(result);
>>
>> // Parse the XML input document.
>> reader.parse(xmlFilename); // Here i get NullPointer
>>Exception
>>
>>
>>Sébastien PLISSON
>>DSIT XS / Infocentre
>>Tél. : 30.13.90
>>
>
>
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