TransformerConfigurationException

[Sheen Brisals <sh...@hp.com>]

Hi there,

I am facing a strange problem which I haven't anticipated. 

I have an xslt stylesheet as a text file in my java class file 
location. I read the file contents and create a transformer instance 
for repeated use within the program. Following is the sample code 
snippet I use.

.....
.....
        m_transformerFactory = (TransformerFactory) 
TransformerFactory.newInstance();

        InputStream inputStream = this.getClass().getResourceAsStream( 
fileName );
        int totalSize = inputStream.available();
        byte xsltFilterBytes[] = new byte[totalSize];
        inputStream.read( xsltFilterBytes);

        StreamSource xsltFilterSource   = new StreamSource( 
                                    new ByteArrayInputStream( 
xsltFilterBytes ));

        // Create the Transfomer instances for the stylesheet.
        m_xsltFilterTransformer = m_transformerFactory.newTransformer( 
xsltFilterSource );
.....
.....

This code works fine when working with the class file locally. But when 
packaged as a jar file and reading from there it throws 
TransformerConfigurationException when tries to create the 
newTransfomer. The file is read correctly, the contents are the same in 
both cases. Following is the error I get.

javax.xml.transform.TransformerConfigurationException:
javax.xml.transform.TransformerException:
org.xml.sax.SAXParseException: An invalid XML character (Unicode: 0x0)
was found in the element content of the document. 

Instead of reading as byte stream I tried using the class loader with 
URL and still the TransformerFactory is not happy. Why would it 
complain about the Unicode character error? I'm running out of ideas. 

Please someone help me to resolve this problem. This has become a 
show-stopper in my case.

Thanks,
Sheen

RE: TransformerConfigurationException

[Gary L Peskin <ga...@firstech.com>]

Hi, Sheen --

I haven't really tried this myself and I'm sort of short on time so I'll
just give you some ideas that might unravel this mystery.

Are you certain that xsltFilterBytes[] contains the same number of
elements and that corresponding elements have the same value in both the
freestanding class and jar'd class?  Try writing a program that gets the
information both ways and then execute

  boolean b = Array.equals(xsltFilterBytesFromClass,
xsltFilterBytesFromZip);

and see if b is true or false.

Since the above will require some restructuring of your program , you
might get similar insights by including the following statements in your
existing code and comparing the values:

  System.err.println("inputStream class is " + inputStream.getClass());
  System.err.println("total size is " + totalSize);

HTH,
Gary

> -----Original Message-----
> From: Sheen Brisals [mailto:sheen_brisals@hp.com] 
> Sent: Wednesday, April 24, 2002 9:47 AM
> To: xalan-j-users@xml.apache.org
> Subject: TransformerConfigurationException
> 
> 
> Hi there,
> 
> I am facing a strange problem which I haven't anticipated. 
> 
> I have an xslt stylesheet as a text file in my java class file 
> location. I read the file contents and create a transformer instance 
> for repeated use within the program. Following is the sample code 
> snippet I use.
> 
> .....
> .....
>         m_transformerFactory = (TransformerFactory) 
> TransformerFactory.newInstance();
> 
>         InputStream inputStream = 
> this.getClass().getResourceAsStream( 
> fileName );
>         int totalSize = inputStream.available();
>         byte xsltFilterBytes[] = new byte[totalSize];
>         inputStream.read( xsltFilterBytes);
> 
>         StreamSource xsltFilterSource   = new StreamSource( 
>                                     new ByteArrayInputStream( 
> xsltFilterBytes ));
> 
>         // Create the Transfomer instances for the stylesheet.
>         m_xsltFilterTransformer = 
> m_transformerFactory.newTransformer( 
> xsltFilterSource );
> .....
> .....
> 
> This code works fine when working with the class file 
> locally. But when 
> packaged as a jar file and reading from there it throws 
> TransformerConfigurationException when tries to create the 
> newTransfomer. The file is read correctly, the contents are 
> the same in 
> both cases. Following is the error I get.
> 
> javax.xml.transform.TransformerConfigurationException:
> javax.xml.transform.TransformerException:
> org.xml.sax.SAXParseException: An invalid XML character 
> (Unicode: 0x0) was found in the element content of the document. 
> 
> Instead of reading as byte stream I tried using the class loader with 
> URL and still the TransformerFactory is not happy. Why would it 
> complain about the Unicode character error? I'm running out of ideas. 
> 
> Please someone help me to resolve this problem. This has become a 
> show-stopper in my case.
> 
> Thanks,
> Sheen
> 
>