Struts2 XML 文件报错

java.lang.NullPointerException
at y.layout.router.OrthogonalEdgeRouter.Ć(Unknown Source)
at y.layout.router.OrthogonalEdgeRouter.ā(Unknown Source)
at y.layout.router.OrthogonalEdgeRouter.č(Unknown Source)
at y.layout.router.OrthogonalEdgeRouter.Ɲ(Unknown Source)
at y.layout.router.OrthogonalEdgeRouter.doLayout(Unknown Source)
at y.layout.router.ReducedSphereOfActionStage.doLayout(Unknown Source)
at y.layout.router.GroupNodeRouterStage.doLayout(Unknown Source)
at y.layout.MinNodeSizeStage.doLayout(Unknown Source)
at y.layout.AbstractLayoutStage.ĥ(Unknown Source)
at y.layout.BufferedLayouter.doLayout(Unknown Source)
at y.layout.BufferedLayouter.doLayout(Unknown Source)
at com.genuitec.eclipse.struts2.editor.layout.Struts2EditorLayoutManager.layoutSelectedNodes(Struts2EditorLayoutManager.java:152)
at com.genuitec.eclipse.struts2.editor.layout.Struts2EditorLayoutManager.doRouting(Struts2EditorLayoutManager.java:239)
at com.genuitec.eclipse.struts2.model.figures.Struts2DiagramFigure.validate(Struts2DiagramFigure.java:31)
at com.genuitec.eclipse.struts2.model.parts.Struts2ConnectionEditPart.refresh(Struts2ConnectionEditPart.java:332)
at org.eclipse.gef.editparts.AbstractConnectionEditPart.setTarget(AbstractConnectionEditPart.java:304)
at org.eclipse.gef.editparts.AbstractGraphicalEditPart.addTargetConnection(AbstractGraphicalEditPart.java:291)
at org.eclipse.gef.editparts.AbstractGraphicalEditPart.refreshTargetConnections(AbstractGraphicalEditPart.java:740)
at com.genuitec.eclipse.struts2.model.parts.Struts2WebResourceEditPart.propertyChange(Struts2WebResourceEditPart.java:96)
at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276)
at com.genuitec.eclipse.struts2.model.di.Struts2WebResourceNode.addConnection(Struts2WebResourceNode.java:41)
at com.genuitec.eclipse.struts2.model.di.Struts2GraphEdge.reconnect(Struts2GraphEdge.java:125)
at com.genuitec.eclipse.struts2.model.di.Struts2GraphEdge.reconnect(Struts2GraphEdge.java:106)
at com.genuitec.eclipse.struts2.model.di.Struts2GraphEdge.<init>(Struts2GraphEdge.java:36)
at com.genuitec.eclipse.struts2.model.di.Struts2WebResourceEdge.<init>(Struts2WebResourceEdge.java:22)
at com.genuitec.eclipse.struts2.model.di.Struts2DIModeBuilder.createWebResourceEdge(Struts2DIModeBuilder.java:196)
at com.genuitec.eclipse.struts2.model.di.Struts2DIModelBuilder2.createWebResourceEdge(Struts2DIModelBuilder2.java:212)
at com.genuitec.eclipse.struts2.model.di.Struts2DIModeBuilder.updateDiagram(Struts2DIModeBuilder.java:148)
at com.genuitec.eclipse.struts2.model.di.Struts2DIModelBuilder2.updateDiagram(Struts2DIModelBuilder2.java:253)
at com.genuitec.eclipse.struts2.editor.Struts2Editor.loadInput(Struts2Editor.java:471)
at com.genuitec.eclipse.struts2.editor.Struts2Editor.reloadInput(Struts2Editor.java:484)
at com.genuitec.eclipse.struts2.editor.Struts2ConfigEditor.pageChange(Struts2ConfigEditor.java:144)
at org.eclipse.ui.part.MultiPageEditorPart.setActivePage(MultiPageEditorPart.java:1067)
at com.genuitec.eclipse.struts2.editor.Struts2ConfigEditor.createPages(Struts2ConfigEditor.java:58)
at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:348)
at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:670)
at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:465)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
at org.eclipse.ui.internal.EditorReference.getEditor(EditorReference.java:289)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2863)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2768)
at org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPage.java:2760)
at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2711)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2707)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2691)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2682)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:651)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:610)
at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:365)
at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:168)
at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:229)
at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:208)
at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:274)
at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:250)
at org.eclipse.jdt.internal.ui.packageview.PackageExplorerActionGroup.handleOpen(PackageExplorerActionGroup.java:373)
at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart$4.open(PackageExplorerPart.java:526)
at org.eclipse.ui.OpenAndLinkWithEditorHelper$InternalListener.open(OpenAndLinkWithEditorHelper.java:48)
at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:845)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)
at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:843)
at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1131)
at org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(StructuredViewer.java:1235)
at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:264)
at org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.java:258)
at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:298)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2629)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2593)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2427)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:670)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:663)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574)
at org.eclipse.equinox.launcher.Main.run(Main.java:1407)