该文为转载，原文地址 https://blog.csdn.net/youzhouliu/article/details/52287898
启动Eclipse时,在loading workbench时很快就闪退，反复启动几次都是这种情况，关机重启后还是出现这种情况，并且每次闪退后都提示查看\workspace\.metadata\.log ，进入该目录中，发现有如下异常信息记录：
!ENTRY org.eclipse.e4.ui.workbench.swt 4 2 2016-08-23 08:42:49.516
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.e4.ui.workbench.swt".
!STACK 0
java.lang.IllegalArgumentException: Argument cannot be null
at org.eclipse.swt.SWT.error(SWT.java:4472)
at org.eclipse.swt.SWT.error(SWT.java:4406)
at org.eclipse.swt.SWT.error(SWT.java:4377)
at org.eclipse.swt.widgets.Widget.error(Widget.java:482)
at org.eclipse.swt.widgets.Widget.checkParent(Widget.java:291)
at org.eclipse.swt.widgets.Widget.<init>(Widget.java:158)
at org.eclipse.swt.widgets.Control.<init>(Control.java:109)
at org.eclipse.swt.widgets.Scrollable.<init>(Scrollable.java:81)
at org.eclipse.swt.widgets.Composite.<init>(Composite.java:96)
at org.eclipse.e4.ui.workbench.renderers.swt.SashRenderer.createWidget(SashRenderer.java:127)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:971)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:640)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:746)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$0(PartRenderingEngine.java:717)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:711)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:695)
at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.createElement(PartServiceImpl.java:1205)
at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:1170)
at org.eclipse.ui.internal.WorkbenchPage.showPart(WorkbenchPage.java:1301)
at org.eclipse.ui.internal.WorkbenchPage.busyShowView(WorkbenchPage.java:1266)
at org.eclipse.ui.internal.WorkbenchPage$12.run(WorkbenchPage.java:4211)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage.java:4207)
at org.eclipse.ui.internal.ide.IDEWorkbenchPlugin$2.run(IDEWorkbenchPlugin.java:376)
at org.eclipse.swt.widgets.Display.runTimer(Display.java:4281)
at org.eclipse.swt.widgets.Display.messageProc(Display.java:3368)
at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2549)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3767)
at org.eclipse.swt.widgets.Display.release(Display.java:3825)
at org.eclipse.swt.graphics.Device.dispose(Device.java:295)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:155)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
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:669)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
at org.eclipse.equinox.launcher.Main.run(Main.java:1515)
at org.eclipse.equinox.launcher.Main.main(Main.java:1488)
出现该问题的原因是：由于项目没有正常关闭运行而导致"workbench.xmi"中的"persistedState"标签还保持在运行时的配置造成的。
解决办法：
找到<workspace>/.metadata/.plugins/org.eclipse.e4.workbench/workbench.xmi"文件，将其删掉，再重启Eclipse，恢复正常。
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作者：youzhouliu
来源：CSDN
原文：https://blog.csdn.net/youzhouliu/article/details/52287898
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