[FOP-2919] Direct Printing throws NullpointerException in AbstractRenderer

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4
• Fix Version/s: 2.6
• Component/s: renderer/awt
• Environment: Windows 10
• Assignee: Simon Steiner
• Reporter: Rainer Rieder
• Created: 13/Mar/20 15:25
• Updated: 22/Jul/20 11:12
• Resolved: 22/Jul/20 11:11

Description

While the Generation of PDF or PostScript Documents still works the output as a direct print

throws a NullpointerException under FOP 2.4.

Direct Printing worked under FOP 2.3 without a problem.

 

Testcall is:    java org.apache.fop.cli.Main  -fo test.fo -print

( see attached test.fo file)

org.apache.fop.apps.FOPException: javax.xml.transform.TransformerException: java.lang.NullPointerException
javax.xml.transform.TransformerException: java.lang.NullPointerException
at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:296)
at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:116)
at org.apache.fop.cli.Main.startFOP(Main.java:183)
at org.apache.fop.cli.Main.main(Main.java:214)
Caused by: javax.xml.transform.TransformerException: java.lang.NullPointerException
at java.xml/com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:783)
at java.xml/com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:370)
at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:293)
... 3 more
Caused by: java.lang.NullPointerException
at org.apache.fop.render.AbstractRenderer.renderMainReference(AbstractRenderer.java:527)
at org.apache.fop.render.AbstractRenderer.renderBodyRegion(AbstractRenderer.java:433)
at org.apache.fop.render.AbstractRenderer.renderRegionViewport(AbstractRenderer.java:380)
at org.apache.fop.render.AbstractRenderer.renderPageAreas(AbstractRenderer.java:345)
at org.apache.fop.render.java2d.Java2DRenderer.print(Java2DRenderer.java:1008)
at java.desktop/sun.print.RasterPrinterJob.printPage(RasterPrinterJob.java:2275)
at java.desktop/sun.print.RasterPrinterJob.print(RasterPrinterJob.java:1654)
at java.desktop/sun.print.RasterPrinterJob.print(RasterPrinterJob.java:1484)
at org.apache.fop.render.print.PrintRenderer.stopRenderer(PrintRenderer.java:137)
at org.apache.fop.area.RenderPagesModel.endDocument(RenderPagesModel.java:265)
at org.apache.fop.area.AreaTreeHandler.endDocument(AreaTreeHandler.java:342)
at org.apache.fop.fo.FOTreeBuilder.endDocument(FOTreeBuilder.java:170)
at java.xml/com.sun.org.apache.xml.internal.serializer.ToXMLSAXHandler.endDocument(ToXMLSAXHandler.java:183)
at java.xml/com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endDocument(AbstractSAXParser.java:746)
at java.xml/com.sun.org.apache.xerces.internal.xinclude.XIncludeHandler.endDocument(XIncludeHandler.java:1224)
at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:546)
at java.xml/com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:888)
at java.xml/com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:824)
at java.xml/com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at java.xml/com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1216)
at java.xml/com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:635)
at java.xml/com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(TransformerImpl.java:687)
at java.xml/com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:774)
... 5 more

Issue Links

• fixes: FOP-2948 Null pointer exception in render (AbstractRenderer.java:527) when XML send for printing on TCP/IP printer
• fixes: FOP-2953 NPE when printing FO