今天上午還用eclipse 但是未響應，我以為卡了就直接關閉了，沒想到下午就直接啟動不起來了，還提示到工作空間的.metadata資料夾下的.log檢視錯誤日誌，我打開了log檔案報錯如下：

!SESSION 2016-02-16 15:42:23.496 -----------------------------------------------

eclipse.buildId=v22.3.0-887826
java.version=1.7.0_07
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=zh_CN
Framework arguments:  -product com.android.ide.eclipse.adt.package.product
Command-line arguments:  -os win32 -ws win32 -arch x86_64 -product com.android.ide.eclipse.adt.package.product


!ENTRY org.eclipse.core.resources 2 10035 2016-02-16 15:42:24.777
!MESSAGE The workspace exited with unsaved changes in the previous session; refreshing workspace to recover changes.


!ENTRY org.eclipse.osgi 4 0 2016-02-16 15:42:28.378
!MESSAGE Application error
!STACK 1
org.eclipse.swt.SWTException: Failed to execute runnable (java.lang.NullPointerException)
at org.eclipse.swt.SWT.error(SWT.java:4361)
at org.eclipse.swt.SWT.error(SWT.java:4276)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:138)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4144)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761)
at org.eclipse.swt.widgets.Display.release(Display.java:3814)
at org.eclipse.swt.graphics.Device.dispose(Device.java:295)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:140)
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:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
Caused by: java.lang.NullPointerException
at org.eclipse.ui.internal.Workbench.createWorkbenchWindow(Workbench.java:1232)
at org.eclipse.ui.internal.Workbench.getActiveWorkbenchWindow(Workbench.java:1225)
at org.eclipse.cdt.codan.internal.ui.cxx.Startup$1.run(Startup.java:44)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
... 17 more


!ENTRY org.eclipse.core.resources 4 2 2016-02-16 15:42:28.409
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.core.resources".
!STACK 0
java.lang.NullPointerException
at org.eclipse.ui.activities.WorkbenchActivityHelper.isFiltering(WorkbenchActivityHelper.java:235)
at org.eclipse.ui.internal.ide.IDEWorkbenchActivityHelper$3.resourceChanged(IDEWorkbenchActivityHelper.java:158)
at org.eclipse.core.internal.events.NotificationManager$1.run(NotificationManager.java:291)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:285)
at org.eclipse.core.internal.events.NotificationManager.broadcastChanges(NotificationManager.java:149)
at org.eclipse.core.internal.resources.Workspace.broadcastPostChange(Workspace.java:395)
at org.eclipse.core.internal.resources.Workspace.endOperation(Workspace.java:1530)
at org.eclipse.core.internal.resources.Marker.setAttribute(Marker.java:251)
at com.android.ide.eclipse.adt.internal.project.BaseProjectHelper.markProject(BaseProjectHelper.java:213)
at com.android.ide.eclipse.adt.internal.project.BaseClasspathContainerInitializer$1.run(BaseClasspathContainerInitializer.java:66)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)


!ENTRY org.eclipse.core.resources 4 2 2016-02-16 15:42:28.440
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.core.resources".
!STACK 0
java.lang.NullPointerException
at org.eclipse.ui.activities.WorkbenchActivityHelper.isFiltering(WorkbenchActivityHelper.java:235)
at org.eclipse.ui.internal.ide.IDEWorkbenchActivityHelper$3.resourceChanged(IDEWorkbenchActivityHelper.java:158)
at org.eclipse.core.internal.events.NotificationManager$1.run(NotificationManager.java:291)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:285)
at org.eclipse.core.internal.events.NotificationManager.broadcastChanges(NotificationManager.java:149)
at org.eclipse.core.internal.resources.Workspace.broadcastPostChange(Workspace.java:395)
at org.eclipse.core.internal.resources.Workspace.endOperation(Workspace.java:1530)
at org.eclipse.core.internal.resources.Marker.setAttribute(Marker.java:251)
at org.eclipse.core.internal.resources.Marker.setAttribute(Marker.java:223)
at com.android.ide.eclipse.adt.internal.project.BaseProjectHelper.markProject(BaseProjectHelper.java:214)
at com.android.ide.eclipse.adt.internal.project.BaseClasspathContainerInitializer$1.run(BaseClasspathContainerInitializer.java:66)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)


!ENTRY org.eclipse.mylyn.tasks.ui 4 0 2016-02-16 15:42:28.440
!MESSAGE Could not load presentation extension
!STACK 0
java.lang.NullPointerException
at org.eclipse.ui.plugin.AbstractUIPlugin.imageDescriptorFromPlugin(AbstractUIPlugin.java:671)
at org.eclipse.mylyn.internal.tasks.ui.util.TasksUiExtensionReader.readPresentation(TasksUiExtensionReader.java:465)
at org.eclipse.mylyn.internal.tasks.ui.util.TasksUiExtensionReader.initStartupExtensions(TasksUiExtensionReader.java:266)
at org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin.start(TasksUiPlugin.java:583)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:464)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:340)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1212)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:273)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:52)
at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:269)
at org.eclipse.ui.internal.EarlyStartupRunnable.getExecutableExtension(EarlyStartupRunnable.java:117)
at org.eclipse.ui.internal.EarlyStartupRunnable.run(EarlyStartupRunnable.java:66)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.Workbench$54.run(Workbench.java:2412)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)


!ENTRY org.eclipse.core.resources 4 2 2016-02-16 15:42:28.440
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.core.resources".
!STACK 0
java.lang.NullPointerException
at org.eclipse.ui.activities.WorkbenchActivityHelper.isFiltering(WorkbenchActivityHelper.java:235)
at org.eclipse.ui.internal.ide.IDEWorkbenchActivityHelper$3.resourceChanged(IDEWorkbenchActivityHelper.java:158)
at org.eclipse.core.internal.events.NotificationManager$1.run(NotificationManager.java:291)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:285)
at org.eclipse.core.internal.events.NotificationManager.broadcastChanges(NotificationManager.java:149)
at org.eclipse.core.internal.resources.Workspace.broadcastPostChange(Workspace.java:395)
at org.eclipse.core.internal.resources.Workspace.endOperation(Workspace.java:1530)
at org.eclipse.core.internal.resources.Marker.setAttribute(Marker.java:251)
at org.eclipse.core.internal.resources.Marker.setAttribute(Marker.java:223)
at com.android.ide.eclipse.adt.internal.project.BaseProjectHelper.markProject(BaseProjectHelper.java:215)
at com.android.ide.eclipse.adt.internal.project.BaseClasspathContainerInitializer$1.run(BaseClasspathContainerInitializer.java:66)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)


!ENTRY org.eclipse.mylyn.tasks.ui 4 0 2016-02-16 15:42:28.440
!MESSAGE Could not load presentation extension
!STACK 0
java.lang.NullPointerException
at org.eclipse.ui.plugin.AbstractUIPlugin.imageDescriptorFromPlugin(AbstractUIPlugin.java:671)
at org.eclipse.mylyn.internal.tasks.ui.util.TasksUiExtensionReader.readPresentation(TasksUiExtensionReader.java:465)
at org.eclipse.mylyn.internal.tasks.ui.util.TasksUiExtensionReader.initStartupExtensions(TasksUiExtensionReader.java:266)
at org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin.start(TasksUiPlugin.java:583)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:464)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at org.eclipse.osgi.internal.loader.BundleLoader.loadClass(BundleLoader.java:340)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:229)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1212)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:174)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:273)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:52)
at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:269)
at org.eclipse.ui.internal.EarlyStartupRunnable.getExecutableExtension(EarlyStartupRunnable.java:117)
at org.eclipse.ui.internal.EarlyStartupRunnable.run(EarlyStartupRunnable.java:66)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.Workbench$54.run(Workbench.java:2412)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)


!ENTRY org.eclipse.mylyn.monitor.ui 4 0 2016-02-16 15:42:28.487
!MESSAGE Monitor UI stop failed
!STACK 0
java.lang.NullPointerException
at org.eclipse.mylyn.internal.monitor.ui.ActivityContextManager.stop(ActivityContextManager.java:152)
at org.eclipse.mylyn.internal.monitor.ui.MonitorUiPlugin.stop(MonitorUiPlugin.java:157)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:771)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.stop(BundleContextImpl.java:764)
at org.eclipse.osgi.framework.internal.core.BundleHost.stopWorker(BundleHost.java:510)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.suspend(AbstractBundle.java:566)
at org.eclipse.osgi.framework.internal.core.Framework.suspendBundle(Framework.java:1206)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.decFWSL(StartLevelManager.java:592)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:257)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.shutdown(StartLevelManager.java:215)
at org.eclipse.osgi.framework.internal.core.InternalSystemBundle.suspend(InternalSystemBundle.java:284)
at org.eclipse.osgi.framework.internal.core.Framework.shutdown(Framework.java:692)
at org.eclipse.osgi.framework.internal.core.Framework.close(Framework.java:600)
at org.eclipse.core.runtime.adaptor.EclipseStarter.shutdown(EclipseStarter.java:399)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:199)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)


!ENTRY org.eclipse.core.jobs 2 2 2016-02-16 15:42:29.300
!MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: org.eclipse.ui.internal.ide.IDEWorkbenchActivityHelper$4


!ENTRY org.eclipse.core.jobs 2 2 2016-02-16 15:42:29.302

!MESSAGE Job found still running after platform shutdown.  Jobs should be canceled by the plugin that scheduled them during shutdown: org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin$TasksUiInitializationJob

很是鬱悶，網上找了好多文章都沒找到，終於發現一個方法就是刪除\workspace\.metadata\.plugins\org.eclipse.e4.workbench資料夾，重啟eclipse。