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SVG export fails with NPE [message #1828149]

Tue, 02 June 2020 12:22

Eclipse User

Hi,

I can export from my diagram editor in any other format. But for SVG it fails with an InvocationTargetException (triggered by an NPE in Apache Batik).

In Stack Overflow a problem was reported that sounds similar (and has a similar stack trace):
https://stackoverflow.com/questions/16138850/batik-svggraphics2d-nullpointerexception-when-drawing-image

They say that this is due to a missing batik-codec.jar on the classpath.

This may also be related to https://www.eclipse.org/forums/index.php/m/1809164/?srch=svg#msg_1809164

Re: SVG export fails with NPE [message #1828150 is a reply to message #1828149]

Tue, 02 June 2020 12:24

Eclipse User

here is the stack trace

java.lang.reflect.InvocationTargetException
at org.eclipse.graphiti.ui.features.DefaultSaveImageFeature$1.run(DefaultSaveImageFeature.java:281)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:436)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:352)
at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:469)
at org.eclipse.graphiti.ui.features.DefaultSaveImageFeature.save(DefaultSaveImageFeature.java:114)
at org.eclipse.graphiti.features.impl.AbstractSaveImageFeature.execute(AbstractSaveImageFeature.java:100)
at org.eclipse.graphiti.internal.command.GenericFeatureCommandWithContext.execute(GenericFeatureCommandWithContext.java:58)
at org.eclipse.graphiti.ui.internal.command.GefCommandWrapper.execute(GefCommandWrapper.java:48)
at org.eclipse.graphiti.ui.internal.editor.EmfOnGefCommand.execute(EmfOnGefCommand.java:51)
at org.eclipse.graphiti.internal.command.GFPreparableCommand2.doExecute(GFPreparableCommand2.java:40)
at org.eclipse.emf.transaction.RecordingCommand.execute(RecordingCommand.java:135)
at org.eclipse.emf.workspace.EMFCommandOperation.doExecute(EMFCommandOperation.java:119)
at org.eclipse.emf.workspace.AbstractEMFOperation.execute(AbstractEMFOperation.java:150)
at org.eclipse.core.commands.operations.DefaultOperationHistory.execute(DefaultOperationHistory.java:496)
at org.eclipse.emf.workspace.impl.WorkspaceCommandStackImpl.doExecute(WorkspaceCommandStackImpl.java:208)
at org.eclipse.emf.transaction.impl.AbstractTransactionalCommandStack.execute(AbstractTransactionalCommandStack.java:165)
at org.eclipse.graphiti.ui.internal.editor.GFWorkspaceCommandStackImpl.execute(GFWorkspaceCommandStackImpl.java:94)
at org.eclipse.graphiti.ui.internal.editor.GFCommandStack.execute(GFCommandStack.java:136)
at org.eclipse.graphiti.ui.internal.action.SaveImageAction.executeOnCommandStack(SaveImageAction.java:106)
at org.eclipse.graphiti.ui.internal.action.SaveImageAction.run(SaveImageAction.java:89)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:474)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:579)
at org.eclipse.jface.action.ActionContributionItem.lambda$4(ActionContributionItem.java:413)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4175)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3988)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3587)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1160)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1049)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:660)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:559)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:154)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:150)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594)
at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
at org.eclipse.equinox.launcher.Main.main(Main.java:1438)
Caused by: java.lang.NullPointerException
at org.apache.batik.svggen.ImageHandlerBase64Encoder.encodeImage(ImageHandlerBase64Encoder.java:157)
at org.apache.batik.svggen.ImageHandlerBase64Encoder.handleHREF(ImageHandlerBase64Encoder.java:133)
at org.apache.batik.svggen.ImageHandlerBase64Encoder.handleHREF(ImageHandlerBase64Encoder.java:72)
at org.apache.batik.svggen.DefaultImageHandler.handleImage(DefaultImageHandler.java:63)
at org.apache.batik.svggen.SimpleImageHandler.handleImage(SimpleImageHandler.java:100)
at org.apache.batik.svggen.SVGGraphics2D.drawImage(SVGGraphics2D.java:677)
at org.apache.batik.svggen.SVGGraphics2D.drawImage(SVGGraphics2D.java:868)
at org.eclipse.graphiti.export.batik.GraphicsToGraphics2DAdaptor.drawString(GraphicsToGraphics2DAdaptor.java:764)
at org.eclipse.graphiti.export.batik.GraphicsToGraphics2DAdaptor.drawText(GraphicsToGraphics2DAdaptor.java:719)
at org.eclipse.draw2d.Graphics.drawText(Graphics.java:426)
at org.eclipse.draw2d.Label.paintFigure(Label.java:515)
at org.eclipse.graphiti.ui.internal.figures.GFText.paintFigure(GFText.java:149)
at org.eclipse.draw2d.Figure.paint(Figure.java:1118)
at org.eclipse.draw2d.Figure.paintChildren(Figure.java:1170)
at org.eclipse.draw2d.Figure.paintClientArea(Figure.java:1205)
at org.eclipse.draw2d.Figure.paint(Figure.java:1120)
at org.eclipse.draw2d.Figure.paintChildren(Figure.java:1170)
at org.eclipse.draw2d.Figure.paintClientArea(Figure.java:1205)
at org.eclipse.draw2d.Figure.paint(Figure.java:1120)
at org.eclipse.draw2d.Figure.paintChildren(Figure.java:1170)
at org.eclipse.draw2d.Figure.paintClientArea(Figure.java:1209)
at org.eclipse.draw2d.Figure.paint(Figure.java:1120)
at org.eclipse.draw2d.Figure.paintChildren(Figure.java:1170)
at org.eclipse.draw2d.Figure.paintClientArea(Figure.java:1205)
at org.eclipse.draw2d.Figure.paint(Figure.java:1120)
at org.eclipse.draw2d.Figure.paintChildren(Figure.java:1170)
at org.eclipse.draw2d.Figure.paintClientArea(Figure.java:1205)
at org.eclipse.draw2d.Figure.paint(Figure.java:1120)
at org.eclipse.graphiti.export.batik.SVGExporter.export(SVGExporter.java:50)
at org.eclipse.graphiti.ui.features.DefaultSaveImageFeature$1.run(DefaultSaveImageFeature.java:278)
... 49 more
Root exception:
java.lang.NullPointerException
at org.apache.batik.svggen.ImageHandlerBase64Encoder.encodeImage(ImageHandlerBase64Encoder.java:157)
at org.apache.batik.svggen.ImageHandlerBase64Encoder.handleHREF(ImageHandlerBase64Encoder.java:133)
at org.apache.batik.svggen.ImageHandlerBase64Encoder.handleHREF(ImageHandlerBase64Encoder.java:72)
at org.apache.batik.svggen.DefaultImageHandler.handleImage(DefaultImageHandler.java:63)
at org.apache.batik.svggen.SimpleImageHandler.handleImage(SimpleImageHandler.java:100)
at org.apache.batik.svggen.SVGGraphics2D.drawImage(SVGGraphics2D.java:677)
at org.apache.batik.svggen.SVGGraphics2D.drawImage(SVGGraphics2D.java:868)
at org.eclipse.graphiti.export.batik.GraphicsToGraphics2DAdaptor.drawString(GraphicsToGraphics2DAdaptor.java:764)
at org.eclipse.graphiti.export.batik.GraphicsToGraphics2DAdaptor.drawText(GraphicsToGraphics2DAdaptor.java:719)
at org.eclipse.draw2d.Graphics.drawText(Graphics.java:426)
at org.eclipse.draw2d.Label.paintFigure(Label.java:515)
at org.eclipse.graphiti.ui.internal.figures.GFText.paintFigure(GFText.java:149)
at org.eclipse.draw2d.Figure.paint(Figure.java:1118)
at org.eclipse.draw2d.Figure.paintChildren(Figure.java:1170)
at org.eclipse.draw2d.Figure.paintClientArea(Figure.java:1205)
at org.eclipse.draw2d.Figure.paint(Figure.java:1120)
at org.eclipse.draw2d.Figure.paintChildren(Figure.java:1170)
at org.eclipse.draw2d.Figure.paintClientArea(Figure.java:1205)
at org.eclipse.draw2d.Figure.paint(Figure.java:1120)
at org.eclipse.draw2d.Figure.paintChildren(Figure.java:1170)
at org.eclipse.draw2d.Figure.paintClientArea(Figure.java:1209)
at org.eclipse.draw2d.Figure.paint(Figure.java:1120)
at org.eclipse.draw2d.Figure.paintChildren(Figure.java:1170)
at org.eclipse.draw2d.Figure.paintClientArea(Figure.java:1205)
at org.eclipse.draw2d.Figure.paint(Figure.java:1120)
at org.eclipse.draw2d.Figure.paintChildren(Figure.java:1170)
at org.eclipse.draw2d.Figure.paintClientArea(Figure.java:1205)
at org.eclipse.draw2d.Figure.paint(Figure.java:1120)
at org.eclipse.graphiti.export.batik.SVGExporter.export(SVGExporter.java:50)
at org.eclipse.graphiti.ui.features.DefaultSaveImageFeature$1.run(DefaultSaveImageFeature.java:278)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:436)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:352)
at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:469)
at org.eclipse.graphiti.ui.features.DefaultSaveImageFeature.save(DefaultSaveImageFeature.java:114)
at org.eclipse.graphiti.features.impl.AbstractSaveImageFeature.execute(AbstractSaveImageFeature.java:100)
at org.eclipse.graphiti.internal.command.GenericFeatureCommandWithContext.execute(GenericFeatureCommandWithContext.java:58)
at org.eclipse.graphiti.ui.internal.command.GefCommandWrapper.execute(GefCommandWrapper.java:48)
at org.eclipse.graphiti.ui.internal.editor.EmfOnGefCommand.execute(EmfOnGefCommand.java:51)
at org.eclipse.graphiti.internal.command.GFPreparableCommand2.doExecute(GFPreparableCommand2.java:40)
at org.eclipse.emf.transaction.RecordingCommand.execute(RecordingCommand.java:135)
at org.eclipse.emf.workspace.EMFCommandOperation.doExecute(EMFCommandOperation.java:119)
at org.eclipse.emf.workspace.AbstractEMFOperation.execute(AbstractEMFOperation.java:150)
at org.eclipse.core.commands.operations.DefaultOperationHistory.execute(DefaultOperationHistory.java:496)
at org.eclipse.emf.workspace.impl.WorkspaceCommandStackImpl.doExecute(WorkspaceCommandStackImpl.java:208)
at org.eclipse.emf.transaction.impl.AbstractTransactionalCommandStack.execute(AbstractTransactionalCommandStack.java:165)
at org.eclipse.graphiti.ui.internal.editor.GFWorkspaceCommandStackImpl.execute(GFWorkspaceCommandStackImpl.java:94)
at org.eclipse.graphiti.ui.internal.editor.GFCommandStack.execute(GFCommandStack.java:136)
at org.eclipse.graphiti.ui.internal.action.SaveImageAction.executeOnCommandStack(SaveImageAction.java:106)
at org.eclipse.graphiti.ui.internal.action.SaveImageAction.run(SaveImageAction.java:89)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:474)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:579)
at org.eclipse.jface.action.ActionContributionItem.lambda$4(ActionContributionItem.java:413)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4175)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3988)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3587)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1160)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1049)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:660)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:559)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:154)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:150)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594)
at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
at org.eclipse.equinox.launcher.Main.main(Main.java:1438)

Re: SVG export fails with NPE [message #1828178 is a reply to message #1828150]

Wed, 03 June 2020 06:14

Eclipse User

Hi Hendrik,

I just checked that with the installations I have on my machine, but there SVG export is working. I searched a bit and found that in my installations there is another plugin (org.apache.commons.codec) that provides the Base64 encoder required here.

Do you have a special setup for your Eclipse? I haven't tested all distributions, but I guess most will provide above Apache plugin.

Michael

Re: SVG export fails with NPE [message #1828721 is a reply to message #1828178]

Wed, 17 June 2020 11:00

Eclipse User

Hi Michael,

my installation is based on the IDE for Eclipse Committers and also contains org.apache.commons.codec. But this is not the same as what is contained in batik-codec.jar (they have different contents).
I just confirmed though, that the batik codec is also present in my installation.

I will try some debugging to see what happens.

Henrik

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