eclipse 启动失败

今天上午还用eclipse 但是未响应，我以为卡了就直接关闭了，没想到下午就直接启动不起来了，还提示到工作空间的.metadata文件夹下的.log查看错误日志，我打开了log文件报错如下：

!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

很是郁闷，网上找了好多文章都没找到，终于发现一个方法就是删除\workspace\.metadata\.plugins\org.eclipse.e4.workbench文件夹，重启eclipse。