It seems I am not the only one having this problem. But I failed to find
out whether this has been registered as a bug or accepted as a "feature"..
I am using fop 0.20.3 that comes with batik 1.1.1, in a web application
under Resin 2.0.5 (Windows 2000). All jars are in the application's
WEB-INF/lib. Each time the application is redeployed in the servlet
container, batik throws an exception and the servlet engine has to be
restarted. I tried replacing batik 1.1.1 with 1.0, with the same results.
This is apparently caused by the servlet container's classloader reloading
java.awt.RenderingHints.Key subclasses. They try to register themselves
from the constructor. Registered instances are stored in a static map in
RenderingHints.Key. And because RenderingHints.Key is already loaded in
the core VM, it contains all previously registered instances, and throws
an error. On subsequent calls there is a NoClassDefFoundError (stack
traces below). I hope I made some sense here, I know very little about
awt.
It seems to me that the only solution is to place batik.jar in resin/lib,
or jdk's jre/lib/ext, making batik part of the core VM. This doesn't work
well in a production environment, for obvious reasons.
Has anyone thought about this problem? Does this qualify as a bug? Or am I
missing out on some (other) obvious solution here?
--
Katja Kivilahti
-------------------------
java.lang.ExceptionInInitializerError: java.lang.IllegalArgumentException:
Instance(10100) of org.apache.batik.ext.awt.TranscodingHintKey already
registered
at
java.awt.RenderingHints$Key.recordIdentity(RenderingHints.java:45)
at java.awt.RenderingHints$Key.<init>(RenderingHints.java:64)
at org.apache.batik.ext.awt.TranscodingHintKey.<init>(Unknown
Source)
at org.apache.batik.ext.awt.RenderingHintsKeyExt.<clinit>(Unknown
Source)
at org.apache.batik.gvt.AbstractGraphicsNode.paint(Unknown Source)
at
org.apache.fop.render.pdf.PDFRenderer.renderSVGDocument(PDFRenderer.java:468)
at
org.apache.fop.render.pdf.PDFRenderer.renderSVGArea(PDFRenderer.java:382)
at org.apache.fop.svg.SVGArea.render(SVGArea.java:58)
at
org.apache.fop.render.pdf.PDFRenderer.renderForeignObjectArea(PDFRenderer.java:366)
at
org.apache.fop.layout.inline.ForeignObjectArea.render(ForeignObjectArea.java:50)
at
org.apache.fop.render.AbstractRenderer.renderLineArea(AbstractRenderer.java:223)
at org.apache.fop.layout.LineArea.render(LineArea.java:163)
at
org.apache.fop.render.AbstractRenderer.renderBlockArea(AbstractRenderer.java:192)
at org.apache.fop.layout.BlockArea.render(BlockArea.java:82)
at
org.apache.fop.render.AbstractRenderer.renderAreaContainer(AbstractRenderer.java:158)
at
org.apache.fop.layout.AreaContainer.render(AreaContainer.java:38)
at
....
org.apache.fop.render.AbstractRenderer.renderAreaContainer(AbstractRenderer.java:158)
at org.apache.fop.layout.ColumnArea.render(ColumnArea.java:33)
at
org.apache.fop.render.AbstractRenderer.renderSpanArea(AbstractRenderer.java:58)
at org.apache.fop.layout.SpanArea.render(SpanArea.java:53)
at
org.apache.fop.render.AbstractRenderer.renderBodyAreaContainer(AbstractRenderer.java:114)
at
org.apache.fop.render.pdf.PDFRenderer.renderPage(PDFRenderer.java:732)
at
org.apache.fop.render.pdf.PDFRenderer.render(PDFRenderer.java:700)
at
org.apache.fop.apps.StreamRenderer.queuePage(StreamRenderer.java:217)
at org.apache.fop.layout.AreaTree.addPage(AreaTree.java:81)
at
org.apache.fop.fo.pagination.PageSequence.format(PageSequence.java:307)
at
org.apache.fop.apps.StreamRenderer.render(StreamRenderer.java:200)
at
org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:182)
at
org.apache.xerces.parsers.SAXParser.endElement(SAXParser.java:1403)
at
org.apache.xerces.validators.common.XMLValidator.callEndElement(XMLValidator.java:1550)
at
org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(XMLDocumentScanner.java:1149)
at
org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:381)
at
org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1098)
at org.apache.fop.apps.Driver.render(Driver.java:481)
at org.apache.fop.apps.Driver.run(Driver.java:554)
at
com.xxx.xxx.pdfgenerator.FOPBridge.renderFO(FOPBridge.java:60)
at
...
at javax.servlet.http.HttpServlet.service(HttpServlet.java:103)
at
com.caucho.server.http.FilterChainServlet.doFilter(FilterChainServlet.java:82)
at com.caucho.server.http.Invocation.service(Invocation.java:277)
at
com.caucho.server.http.CacheInvocation.service(CacheInvocation.java:129)
at
com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:216)
at
com.caucho.server.http.HttpRequest.handleConnection(HttpRequest.java:158)
at com.caucho.server.TcpConnection.run(TcpConnection.java:140)
at java.lang.Thread.run(Thread.java:484)
...
[2002/03/28 11:23:35] null
java.lang.NoClassDefFoundError
at org.apache.batik.gvt.AbstractGraphicsNode.paint(Unknown Source)
at
org.apache.fop.render.pdf.PDFRenderer.renderSVGDocument(PDFRenderer.java:468)
at
org.apache.fop.render.pdf.PDFRenderer.renderSVGArea(PDFRenderer.java:382)
at org.apache.fop.svg.SVGArea.render(SVGArea.java:58)
at
org.apache.fop.render.pdf.PDFRenderer.renderForeignObjectArea(PDFRenderer.java:366)
at
org.apache.fop.layout.inline.ForeignObjectArea.render(ForeignObjectArea.java:50)
at
org.apache.fop.render.AbstractRenderer.renderLineArea(AbstractRenderer.java:223)
at org.apache.fop.layout.LineArea.render(LineArea.java:163)
at
org.apache.fop.render.AbstractRenderer.renderBlockArea(AbstractRenderer.java:192)
at org.apache.fop.layout.BlockArea.render(BlockArea.java:82)
at
org.apache.fop.render.AbstractRenderer.renderAreaContainer(AbstractRenderer.java:158)
at
....
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