我无法做到它的工作。
在以前版本的日食中，没有这样的问题。当我将鼠标放在 EL 表达式上并按 CTRL 键时，Erlier - EL 表达式带有下划线，当我单击它时 - 它带我进入了 java 代码。
现在：在开普勒 - 日食给我抛出一个异常（在错误日志中）：
Message: Unhandled event loop exception
Plug-in: org.eclipse.ui
java.lang.NullPointerException
at org.eclipse.jst.jsf.designtime.internal.view.AbstractDTViewHandler.getWebContentPath(AbstractDTViewHandler.java:214)
at org.eclipse.jst.jsf.designtime.internal.view.AbstractDTViewHandler.getViewId(AbstractDTViewHandler.java:197)
at org.eclipse.jst.jsf.designtime.DTAppManagerUtil.getXMLViewDefnAdapter(DTAppManagerUtil.java:101)
at org.eclipse.jst.jsf.designtime.DTAppManagerUtil.getXMLViewDefnAdapter(DTAppManagerUtil.java:55)
at org.eclipse.jst.jsf.ui.internal.jspeditor.JSPSourceUtil.getELExpression(JSPSourceUtil.java:115)
at org.eclipse.jst.jsf.ui.internal.jspeditor.JSPSourceUtil.findELRegion(JSPSourceUtil.java:48)
at org.eclipse.jst.jsf.ui.internal.jspeditor.AbstractELHyperlinkDetector.detectHyperlinks(AbstractELHyperlinkDetector.java:66)
at org.eclipse.jst.jsf.ui.internal.jspeditor.AbstractELHyperlinkDetector.detectHyperlinks(AbstractELHyperlinkDetector.java:55)
at org.eclipse.ui.texteditor.HyperlinkDetectorRegistry$HyperlinkDetectorDelegate.detectHyperlinks(HyperlinkDetectorRegistry.java:80)
at org.eclipse.jface.text.hyperlink.HyperlinkManager.findHyperlinks(HyperlinkManager.java:289)
at org.eclipse.jface.text.hyperlink.HyperlinkManager.findHyperlinks(HyperlinkManager.java:261)
at org.eclipse.jface.text.hyperlink.HyperlinkManager.mouseMove(HyperlinkManager.java:469)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:212)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4170)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3759)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:140)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:611)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
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:354)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
at org.eclipse.equinox.launcher.Main.main(Main.java:1426)
请注意，在 JSF 中解析 el 表达式 - 当我开始编写它时，它工作正常。你有什么提示吗？
好的，最后我设法解决了配置 Eclipse 项目方面的问题。
我遵循了本教程：http://www.mkyong.com/jsf2/how-to-make-eclipse-ide-supports-jsf-2-0/