我正在使用Eclipse Hellios 3.6.1，当我尝试使用网页编辑器打开包含此字符<%=的JSP（例如<link href=" <%=request.getContextPath()%>）时
这个错误：
Could not open the editor: URLDecoder: Illegal hex characters in escape (%) pattern - For input string: "="
您只能通过使用JSP编辑器打开它来打开该JSP页面。
您能帮助我解决这个问题，并能够通过网页编辑器打开JSP pqges。
错误：
java.lang.IllegalArgumentException: URLDecoder: Illegal hex characters in escape (%) pattern - For input string: "=r"
at java.net.URLDecoder.decode(URLDecoder.java:173)
at org.eclipse.jst.pagedesigner.utils.ProjectResolver.getLocationByURI(ProjectResolver.java:372)
at org.eclipse.jst.pagedesigner.utils.ProjectResolver.getLocationByURI(ProjectResolver.java:500)
at org.eclipse.jst.pagedesigner.utils.ProjectResolver.getLocationByURI(ProjectResolver.java:489)
at org.eclipse.wst.html.core.internal.htmlcss.URLModelProvider.resolveURI(URLModelProvider.java:401)
at org.eclipse.wst.html.core.internal.htmlcss.URLModelProvider.getCommonModelFor(URLModelProvider.java:86)
at org.eclipse.wst.html.core.internal.htmlcss.URLModelProvider.getModelForRead(URLModelProvider.java:259)
at org.eclipse.wst.html.core.internal.htmlcss.LinkElementAdapter.retrieveModel(LinkElementAdapter.java:237)
at org.eclipse.wst.html.core.internal.htmlcss.LinkElementAdapter.getModel(LinkElementAdapter.java:105)
at org.eclipse.wst.html.core.internal.htmlcss.AbstractStyleSheetAdapter.getSheet(AbstractStyleSheetAdapter.java:83)
at org.eclipse.wst.html.core.internal.htmlcss.HTMLDocumentAdapter.item(HTMLDocumentAdapter.java:241)
at org.eclipse.jst.pagedesigner.css2.CSSTempUtil.getStyleSheets(CSSTempUtil.java:65)
at org.eclipse.jst.pagedesigner.css2.CSSUtil.getCSSDeclaration(CSSUtil.java:142)
at org.eclipse.jst.pagedesigner.css2.style.AbstractStyle.calculateDeclaration(AbstractStyle.java:143)
at org.eclipse.jst.pagedesigner.css2.style.AbstractStyle.getDeclaration(AbstractStyle.java:159)
at org.eclipse.jst.pagedesigner.css2.style.AbstractStyle.calculateProperty(AbstractStyle.java:201)
at org.eclipse.jst.pagedesigner.css2.style.AbstractStyle.getStyleProperty(AbstractStyle.java:124)
at org.eclipse.jst.pagedesigner.css2.style.AbstractStyle.getDisplay(AbstractStyle.java:538)
at org.eclipse.jst.pagedesigner.css2.layout.CSSFigure.regetLayout(CSSFigure.java:148)
at org.eclipse.jst.pagedesigner.css2.layout.CSSFigure.invalidateCSS(CSSFigure.java:95)
at org.eclipse.jst.pagedesigner.css2.layout.CSSFigure.setCSSStyle(CSSFigure.java:80)
at org.eclipse.jst.pagedesigner.figurehandler.DefaultFigureHandler.updateFigure(DefaultFigureHandler.java:33)
at org.eclipse.jst.pagedesigner.figurehandler.FigureFactory.updateDeepFigure(FigureFactory.java:128)
at org.eclipse.jst.pagedesigner.parts.ElementEditPart.refresh(ElementEditPart.java:324)
at org.eclipse.jst.pagedesigner.parts.ElementEditPart.refresh(ElementEditPart.java:265)
at org.eclipse.gef.editparts.AbstractEditPart.addNotify(AbstractEditPart.java:253)
at org.eclipse.gef.editparts.AbstractGraphicalEditPart.addNotify(AbstractGraphicalEditPart.java:225)
at org.eclipse.jst.pagedesigner.parts.NodeEditPart.addNotify(NodeEditPart.java:105)
at org.eclipse.jst.pagedesigner.parts.ElementEditPart.addNotify(ElementEditPart.java:156)
at org.eclipse.gef.editparts.AbstractEditPart.addChild(AbstractEditPart.java:213)
at org.eclipse.gef.editparts.AbstractEditPart.refreshChildren(AbstractEditPart.java:771)
at org.eclipse.jst.pagedesigner.parts.DocumentEditPart.refreshChildren(DocumentEditPart.java:134)
at org.eclipse.jst.pagedesigner.parts.DocumentEditPart.refreshChildren(DocumentEditPart.java:127)
at org.eclipse.gef.editparts.AbstractEditPart.refresh(AbstractEditPart.java:719)
at org.eclipse.gef.editparts.AbstractGraphicalEditPart.refresh(AbstractGraphicalEditPart.java:634)
at org.eclipse.jst.pagedesigner.parts.DocumentEditPart.refresh(DocumentEditPart.java:114)
at org.eclipse.gef.editparts.AbstractEditPart.addNotify(AbstractEditPart.java:253)
at org.eclipse.gef.editparts.AbstractGraphicalEditPart.addNotify(AbstractGraphicalEditPart.java:225)
at org.eclipse.jst.pagedesigner.parts.NodeEditPart.addNotify(NodeEditPart.java:105)
at org.eclipse.gef.editparts.AbstractEditPart.addChild(AbstractEditPart.java:213)
at org.eclipse.gef.editparts.SimpleRootEditPart.setContents(SimpleRootEditPart.java:105)
at org.eclipse.gef.ui.parts.AbstractEditPartViewer.setContents(AbstractEditPartViewer.java:618)
at org.eclipse.gef.ui.parts.AbstractEditPartViewer.setContents(AbstractEditPartViewer.java:627)
at org.eclipse.jst.pagedesigner.editors.SimpleGraphicalEditor.setModel(SimpleGraphicalEditor.java:425)
at org.eclipse.jst.pagedesigner.editors.HTMLEditor.connectDesignPage(HTMLEditor.java:365)
at org.eclipse.jst.pagedesigner.editors.HTMLEditor.createPages(HTMLEditor.java:444)
at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:351)
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.actions.OpenWithMenu.openEditor(OpenWithMenu.java:331)
at org.eclipse.ui.actions.OpenWithMenu$2.handleEvent(OpenWithMenu.java:179)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2640)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2604)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2438)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:671)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:664)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:121)
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:575)
at org.eclipse.equinox.launcher.Main.run(Main.java:1408)
at org.eclipse.equinox.launcher.Main.main(Main.java:1383)