[svg-developers] Re: batik JPEGTranscoder

asrdesigns Thu, 14 Apr 2005 12:42:44 -0700


Hi: I am still having problems and have tracked this down to be caused
by the line


      PNGTranscoder t = new PNGTranscoder();

I shall appreciate any help that resolves this.
Regards, Robert.

This is the full java code:

import java.lang.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;

import org.apache.batik.transcoder.image.*;
import org.apache.batik.transcoder.*;
import org.apache.batik.*;

public class Graph_01 extends HttpServlet {
  public void doGet( HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException {
    emitPNG( response );
  }  /*Graph_xx*/

  public void emitPNG( HttpServletResponse response ){
    try{
      response.setContentType("image/png");
      PNGTranscoder t = new PNGTranscoder();
      TranscoderInput input = new TranscoderInput(
"http://www.asrdesigns.ltd.uk/graphics/simple.svg"; ) ;
      TranscoderOutput output = new TranscoderOutput(
response.getOutputStream() ) ;
      t.transcode( input, output ) ;
      response.getOutputStream().close();
    }catch( Exception e){
      e.printStackTrace() ;
    }
  }  /*emitPNG*/

}

and this is the stacktrace:

Apr 14, 2005 3:31:19 PM org.apache.catalina.core.StandardWrapperValve
invoke
SEVERE: Servlet.service() for servlet Graph_01 threw exception
java.lang.ClassFormatError: Unknown constant tag 117 in class file
org/apache/batik/css/engine/value/svg/SVGValueConstants
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
        at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
        at
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1626)
        at
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:850)
        at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1299)
        at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1181)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
        at
org.apache.batik.css.engine.value.svg.ColorManager.<clinit>(Unknown
Source)
        at
org.apache.batik.extension.svg.BatikDomExtension.registerTags(Unknown
Source)
        at
org.apache.batik.dom.svg.ExtensibleSVGDOMImplementation.<init>(Unknown
Source)
        at
org.apache.batik.dom.svg.ExtensibleSVGDOMImplementation.<clinit>(Unknown
Source)
        at org.apache.batik.transcoder.SVGAbstractTranscoder.<init>(Unknown
Source)
        at org.apache.batik.transcoder.image.ImageTranscoder.<init>(Unknown
Source)
        at org.apache.batik.transcoder.image.PNGTranscoder.<init>(Unknown 
Source)
        at Graph_01.emitPNG(Graph_01.java:19)
        at Graph_01.doGet(Graph_01.java:13)



--- In [email protected], "asrdesigns" <[EMAIL PROTECTED]> wrote:
> 
> Thanks Thomas,
> 
> yes, I am using batik 1.5.1 and it is only my servlet code that I am
> compiling (but obviously needs access to the jar files).
> 
> I now have a full set of jars loaded to the server and it not crashing
> at boot-up.  I just got a 404 and I'm too tired to chase it this
> evening ... tomorrow is another day  ;�}
> 
> Regards, Robert.
> 
> --- In [email protected], Thomas DeWeese
> <[EMAIL PROTECTED]> wrote:
> > Hi Robert,
> > 
> > asrdesigns wrote:
> > > 
> > > Thomas: I am using 1.5.0 for both development and hosting: batik
needs
> > > anything over 1.3?
> > 
> >     Batik should be happy to run under any JDK >= 1.3
> > (compiling with 1.5 is a little complex but running should be fine).
> > I would suggest upgrading your Batik at the very least to 1.5.1.
> > Version 1.6 would be my recommendation but given it's
> > newness I can understand some caution.
> > 
> > 
> > > 
> > > Regards, Robert.
> > > 
> > > --- In [email protected], "Rick Bullotta"
> > > <[EMAIL PROTECTED]> wrote:
> > > 
> > >>Most often this is a corrupted class file or JAR file (bad bits
or bad
> > >>spot on the disk).
> > >>
> > >>
> > >>-----Original Message-----
> > >>From: Thomas DeWeese [mailto:[EMAIL PROTECTED] 
> > >>Sent: Tuesday, April 12, 2005 6:02 PM
> > >>To: [email protected]
> > >>Subject: Re: [svg-developers] batik JPEGTranscoder
> > >>
> > >>
> > >>asrdesigns wrote:
> > >>
> > >>
> > >>>has anybody gotten this to work please?
> > >>
> > >>    Yes, lots of people have gotten this to work...
> > >>
> > >>
> > >>>I am getting the following error:
> > >>>
> > >>>java.lang.ClassFormatError: Unknown constant tag 47 in class file
> > >>>org/apache/batik/gvt/AbstractGraphicsNode
> > >>
> > >>    This is a new one... What version of Java are you using?
> > >>
> > >>





-----
To unsubscribe send a message to: [EMAIL PROTECTED]
-or-
visit http://groups.yahoo.com/group/svg-developers and click "edit my 
membership"
---- 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/svg-developers/

<*> To unsubscribe from this group, send an email to:
    [EMAIL PROTECTED]

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/

[svg-developers] Re: batik JPEGTranscoder

Reply via email to