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Posted to fop-dev@xmlgraphics.apache.org by bu...@apache.org on 2002/05/17 10:08:15 UTC
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NullPointerException when rendering PDF
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=5953
NullPointerException when rendering PDF
Summary: NullPointerException when rendering PDF
Product: Fop
Version: all
Platform: HP
OS/Version: HP-UX
Status: RESOLVED
Severity: Normal
Priority: Other
Component: pdf renderer
AssignedTo: fop-dev@xml.apache.org
ReportedBy: tkyjak@csas.cz
This error happenes sometimes(!) when FOP renders PDF for following HTTP
streaming to browser. It's running on the WebLogic Server 6.1.
PDF rendering error:::org.apache.fop.app
s.FOPException
at org.apache.fop.apps.Driver.render(Driver.java, Compiled Code)
at org.apache.fop.apps.Driver.run(Driver.java, Compiled Code)
at cz.csas.cbl.ci.servlet.service.PDFWriterServlet.renderFO
(PDFWriterServlet.java, Compiled Code)
at cz.csas.cbl.ci.servlet.service.PDFWriterServlet.doPost
(PDFWriterServlet.java, Compiled Code)
at javax.servlet.http.HttpServlet.service(HttpServlet.java, Compiled
Code)
at cz.csas.cbl.ci.servlet.framework.BaseViewServlet.service
(BaseViewServlet.java, Compiled Code)
at javax.servlet.http.HttpServlet.service(HttpServlet.java, Compiled
Code)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet
(ServletStubImpl.java, Compiled Code)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet
(ServletStubImpl.java, Compiled Code)
at weblogic.servlet.internal.RequestDispatcherImpl.forward
(RequestDispatcherImpl.java, Compiled Code)
at
cz.csas.cbl.ci.servlet.framework.BaseViewControllerServlet.forwardToView
(BaseViewControllerServlet.java, Compiled Code)
at cz.csas.cbl.ci.servlet.framework.FormControllerServlet.processForm
(FormControllerServlet.java, Compiled Code)
at cz.csas.cbl.ci.servlet.service.ServiceManagementServlet.processPost
(ServiceManagementServlet.java, Compiled Code)
at cz.csas.cbl.ci.servlet.framework.BaseViewControllerServlet.process
(BaseViewControllerServlet.java, Compiled Code)
at cz.csas.cbl.ci.servlet.framework.BaseViewControllerServlet.service
(BaseViewControllerServlet.java, Compiled Code)
at javax.servlet.http.HttpServlet.service(HttpServlet.java, Compiled
Code)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet
(ServletStubImpl.java, Compiled Code)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet
(ServletStubImpl.java, Compiled Code)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet
(WebAppServletContext.java, Compiled Code)
at weblogic.servlet.internal.ServletRequestImpl.execute
(ServletRequestImpl.java, Compiled Code)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java, Compiled
Code)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java, Compiled Code)
---------
java.lang.NullPointerException
at org.apache.xerces.framework.XMLParser.parse(XMLParser.java, Compiled
Code)
at org.apache.fop.apps.Driver.render(Driver.java, Compiled Code)
at org.apache.fop.apps.Driver.run(Driver.java, Compiled Code)
at cz.csas.cbl.ci.servlet.service.PDFWriterServlet.renderFO
(PDFWriterServlet.java, Compiled Code)
at cz.csas.cbl.ci.servlet.service.PDFWriterServlet.doPost
(PDFWriterServlet.java, Compiled Code)
at javax.servlet.http.HttpServlet.service(HttpServlet.java, Compiled
Code)
at cz.csas.cbl.ci.servlet.framework.BaseViewServlet.service
(BaseViewServlet.java, Compiled Code)
at javax.servlet.http.HttpServlet.service(HttpServlet.java, Compiled
Code)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet
(ServletStubImpl.java, Compiled Code)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet
(ServletStubImpl.java, Compiled Code)
at weblogic.servlet.internal.RequestDispatcherImpl.forward
(RequestDispatcherImpl.java, Compiled Code)
at
cz.csas.cbl.ci.servlet.framework.BaseViewControllerServlet.forwardToView
(BaseViewControllerServlet.java, Compiled Code)
at cz.csas.cbl.ci.servlet.framework.FormControllerServlet.processForm
(FormControllerServlet.java, Compiled Code)
at cz.csas.cbl.ci.servlet.service.ServiceManagementServlet.processPost
(ServiceManagementServlet.java, Compiled Code)
at cz.csas.cbl.ci.servlet.framework.BaseViewControllerServlet.process
(BaseViewControllerServlet.java, Compiled Code)
at cz.csas.cbl.ci.servlet.framework.BaseViewControllerServlet.service
(BaseViewControllerServlet.java, Compiled Code)
at javax.servlet.http.HttpServlet.service(HttpServlet.java, Compiled
Code)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet
(ServletStubImpl.java, Compiled Code)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet
(ServletStubImpl.java, Compiled Code)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet
(WebAppServletContext.java, Compiled Code)
at weblogic.servlet.internal.ServletRequestImpl.execute
(ServletRequestImpl.java, Compiled Code)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java, Compiled
Code)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java, Compiled Code)
java.lang.NullPointerException
at org.apache.fop.image.GifJpegImage.loadImage(GifJpegImage.java,
Compiled Code)
at org.apache.fop.image.AbstractFopImage.getBitmaps
(AbstractFopImage.java, Compiled Code)
at org.apache.fop.pdf.PDFXObject.output(PDFXObject.java, Compiled Code)
at org.apache.fop.pdf.PDFDocument.output(PDFDocument.java, Compiled
Code)
at org.apache.fop.render.pdf.PDFRenderer.render(PDFRenderer.java,
Compiled Code)
at org.apache.fop.apps.StreamRenderer.queuePage(StreamRenderer.java,
Compiled Code)
at org.apache.fop.layout.AreaTree.addPage(AreaTree.java, Compiled Code)
at org.apache.fop.fo.pagination.PageSequence.format(PageSequence.java,
Compiled Code)
at org.apache.fop.apps.StreamRenderer.render(StreamRenderer.java,
Compiled Code)
at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java,
Compiled Code)
at org.apache.xerces.parsers.SAXParser.endElement(SAXParser.java,
Compiled Code)
at org.apache.xerces.validators.common.XMLValidator.callEndElement
(XMLValidator.java, Compiled Code)
at
org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch
(XMLDocumentScanner.java, Compiled Code)
at org.apache.xerces.framework.XMLDocumentScanner.parseSome
(XMLDocumentScanner.java, Compiled Code)
at org.apache.xerces.framework.XMLParser.parse(XMLParser.java, Compiled
Code)
at org.apache.fop.apps.Driver.render(Driver.java, Compiled Code)
at org.apache.fop.apps.Driver.run(Driver.java, Compiled Code)
at cz.csas.cbl.ci.servlet.service.PDFWriterServlet.renderFO
(PDFWriterServlet.java, Compiled Code)
at cz.csas.cbl.ci.servlet.service.PDFWriterServlet.doPost
(PDFWriterServlet.java, Compiled Code)
at javax.servlet.http.HttpServlet.service(HttpServlet.java, Compiled
Code)
at cz.csas.cbl.ci.servlet.framework.BaseViewServlet.service
(BaseViewServlet.java, Compiled Code)
at javax.servlet.http.HttpServlet.service(HttpServlet.java, Compiled
Code)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet
(ServletStubImpl.java, Compiled Code)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet
(ServletStubImpl.java, Compiled Code)
at weblogic.servlet.internal.RequestDispatcherImpl.forward
(RequestDispatcherImpl.java, Compiled Code)
at
cz.csas.cbl.ci.servlet.framework.BaseViewControllerServlet.forwardToView
(BaseViewControllerServlet.java, Compiled Code)
at cz.csas.cbl.ci.servlet.framework.FormControllerServlet.processForm
(FormControllerServlet.java, Compiled Code)
at cz.csas.cbl.ci.servlet.service.ServiceManagementServlet.processPost
(ServiceManagementServlet.java, Compiled Code)
at cz.csas.cbl.ci.servlet.framework.BaseViewControllerServlet.process
(BaseViewControllerServlet.java, Compiled Code)
at cz.csas.cbl.ci.servlet.framework.BaseViewControllerServlet.service
(BaseViewControllerServlet.java, Compiled Code)
at javax.servlet.http.HttpServlet.service(HttpServlet.java, Compiled
Code)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet
(ServletStubImpl.java, Compiled Code)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet
(ServletStubImpl.java, Compiled Code)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet
(WebAppServletContext.java, Compiled Code)
at weblogic.servlet.internal.ServletRequestImpl.execute
(ServletRequestImpl.java, Compiled Code)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java, Compiled
Code)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java, Compiled Code)
------- Additional Comments From j3322ptm@yahoo.de 2002-05-17 08:08 -------
This could be a multithreading problem as well as bugs in the FO or other
sources, or even MT problems caused by the JVM (not directly related to FOP)
Without a testcease, it's hard to tell.
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