org.apache.batik.transcoder.TranscoderException: null

[Eric Hamacher]

I get the following exception using Batik (1.7) at the line 
"t.transcode(input, output);"  I am trying to convert a DOM into a 
JPEG image. 

org.apache.batik.transcoder.TranscoderException: null 
Enclosed Exception: 
null 
08/03/05 10:42:08       at 
org.apache.batik.transcoder.image.ImageTranscoder.transcode(ImageTransco
der.java: 
132) 
08/03/05 10:42:08       at 
org.apache.batik.transcoder.XMLAbstractTranscoder.transcode(XMLAbstractT
ranscoder.java: 
142) 
08/03/05 10:42:08       at 
org.apache.batik.transcoder.SVGAbstractTranscoder.transcode(SVGAbstractT
ranscoder.java: 
156) 
08/03/05 10:42:08       at 
polarity.PolarityServlet.doPost(PolarityServlet.java:95) 
08/03/05 10:42:08       at 
javax.servlet.http.HttpServlet.service(HttpServlet.java:763) 
08/03/05 10:42:08       at 
javax.servlet.http.HttpServlet.service(HttpServlet.java:856) 

SOURCE: 

import org.apache.batik.dom.svg.SAXSVGDocumentFactory; 
import org.apache.batik.transcoder.TranscoderException; 
import org.apache.batik.transcoder.TranscoderInput; 
import org.apache.batik.transcoder.TranscoderOutput; 
import org.apache.batik.transcoder.image.JPEGTranscoder; 
import org.apache.batik.util.XMLResourceDescriptor; 
import org.w3c.dom.svg.SVGDocument; 

. . . later on . . . 

        String parser = XMLResourceDescriptor.getXMLParserClassName(); 
        SAXSVGDocumentFactory f = new SAXSVGDocumentFactory(parser); 
        String uri = new File(getServletContext().getRealPath("/") + 
"svg\\polarity.svg").toURL().toString(); 
        SVGDocument doc = (SVGDocument) f.createDocument(uri); 

 . . . some dom processing here, then . . . 

        response.setContentType("image/jpeg"); 

        JPEGTranscoder t = new JPEGTranscoder(); 
        t.addTranscodingHint(JPEGTranscoder.KEY_QUALITY, new Float(. 
8)); 
        TranscoderInput input = new TranscoderInput(doc); 
        ServletOutputStream ostream = response.getOutputStream(); 
        TranscoderOutput output = new TranscoderOutput(ostream); 
        try { 
            t.transcode(input, output); 
        } 
        catch (TranscoderException e) { 
            e.printStackTrace(); 
            System.err.println(e.toString()); 
        } 

        ostream.flush(); 
        ostream.close(); 

Anybody have an idea about what this exception is about?   Thanks 

Regards,

Eric Hamacher

 

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