eclipse for mac an error has occ

第一次在mac上安装eclipse，并配置java环境，一切都摸索着来，看了好多帖子，最开始说mac上自带了java环境，安装eclipse可以直接使用了，结果在官网上下载后，提示安装jdk，自动跳转至苹果推荐的1.6版本，并不能解决问题，遂到Oracle官网下载最新jdk，满心欢喜安装好后，还是提示了新的错误（an error has occurred see the log file）。

!SESSION 2011-12-07 01:27:30.742 -----------------------------------------------eclipse.buildId=M20110909-1335java.version=1.6.0_29java.vendor=Apple Inc.BootLoader constants: OS=macosx, ARCH=x86, WS=cocoa, NL=en_USFramework arguments:  -product org.eclipse.epp.package.java.product -keyring /Users/Julien/.eclipse_keyring -showlocationCommand-line arguments:  -os macosx -ws cocoa -arch x86 -product org.eclipse.epp.package.java.product -keyring /Users/Julien/.eclipse_keyring -showlocation!ENTRY org.eclipse.equinox.p2.core 4 0 2011-12-07 01:27:31.721!MESSAGE Provisioning exception!STACK 1org.eclipse.equinox.p2.core.ProvisionException: Unknown repository type at file:/Applications/eclipse/configuration/org.eclipse.osgi/bundles/126/data/listener_1925729951/.    at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.fail(AbstractRepositoryManager.java:393)    at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.doCreateRepository(AbstractRepositoryManager.java:282)    at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.createRepository(MetadataRepositoryManager.java:41)    at org.eclipse.equinox.internal.provisional.p2.directorywatcher.RepositoryListener.initializeMetadataRepository(RepositoryListener.java:109)    at org.eclipse.equinox.internal.provisional.p2.directorywatcher.RepositoryListener.(RepositoryListener.java:59)    at org.eclipse.equinox.internal.p2.reconciler.dropins.DropinsRepositoryListener.(DropinsRepositoryListener.java:82)    at org.eclipse.equinox.internal.p2.reconciler.dropins.Activator.watchDropins(Activator.java:532)    at org.eclipse.equinox.internal.p2.reconciler.dropins.Activator.start(Activator.java:172)    at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)    at java.security.AccessController.doPrivileged(Native Method)    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)    at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)    at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(AbstractBundle.java:389)    at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1131)    at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:559)    at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:544)    at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:457)    at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:243)    at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:438)    at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:1)    at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)    at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)!SUBENTRY 1 org.eclipse.equinox.p2.metadata.repository 4 1005 2011-12-07 01:27:31.722!MESSAGE Unknown repository type at file:/Applications/eclipse/configuration/org.eclipse.osgi/bundles/126/data/listener_1925729951/.!ENTRY org.eclipse.equinox.p2.reconciler.dropins 4 0 2011-12-07 01:27:31.725!MESSAGE FrameworkEvent ERROR!STACK 0org.osgi.framework.BundleException: Exception in org.eclipse.equinox.internal.p2.reconciler.dropins.Activator.start() of bundle org.eclipse.equinox.p2.reconciler.dropins.    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)    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.resume(AbstractBundle.java:389)    at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1131)    at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:559)    at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:544)    at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:457)    at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:243)    at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:438)    at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:1)    at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)    at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)Caused by: java.lang.IllegalStateException: Could not create metadata repository for: file:/Applications/eclipse/configuration/org.eclipse.osgi/bundles/126/data/listener_1925729951/    at org.eclipse.equinox.internal.provisional.p2.directorywatcher.RepositoryListener.initializeMetadataRepository(RepositoryListener.java:112)    at org.eclipse.equinox.internal.provisional.p2.directorywatcher.RepositoryListener.(RepositoryListener.java:59)    at org.eclipse.equinox.internal.p2.reconciler.dropins.DropinsRepositoryListener.(DropinsRepositoryListener.java:82)    at org.eclipse.equinox.internal.p2.reconciler.dropins.Activator.watchDropins(Activator.java:532)    at org.eclipse.equinox.internal.p2.reconciler.dropins.Activator.start(Activator.java:172)    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)    ... 12 moreRoot exception:java.lang.IllegalStateException: Could not create metadata repository for: file:/Applications/eclipse/configuration/org.eclipse.osgi/bundles/126/data/listener_1925729951/    at org.eclipse.equinox.internal.provisional.p2.directorywatcher.RepositoryListener.initializeMetadataRepository(RepositoryListener.java:112)    at org.eclipse.equinox.internal.provisional.p2.directorywatcher.RepositoryListener.(RepositoryListener.java:59)    at org.eclipse.equinox.internal.p2.reconciler.dropins.DropinsRepositoryListener.(DropinsRepositoryListener.java:82)    at org.eclipse.equinox.internal.p2.reconciler.dropins.Activator.watchDropins(Activator.java:532)    at org.eclipse.equinox.internal.p2.reconciler.dropins.Activator.start(Activator.java:172)    at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)    at java.security.AccessController.doPrivileged(Native Method)    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)    at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)    at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(AbstractBundle.java:389)    at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1131)    at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:559)    at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:544)    at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:457)    at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:243)    at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:438)    at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:1)    at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)    at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)!ENTRY org.eclipse.osgi 4 0 2011-12-07 01:27:31.810!MESSAGE Application error!STACK 1org.osgi.service.application.ApplicationException: No application id has been found.    at org.eclipse.equinox.internal.app.EclipseAppContainer.startDefaultApp(EclipseAppContainer.java:262)    at org.eclipse.equinox.internal.app.MainApplicationLauncher.run(MainApplicationLauncher.java:29)    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:344)    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:622)    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)    at org.eclipse.equinox.launcher.Main.run(Main.java:1410)

几乎尝试了帖子里所有的方法：

1⃣️eclipse -clean

2⃣️删除 .metadata目录下.plugins/org.eclipse.e4.workbench，使用此方法需要显示隐藏文件显示Mac隐藏文件的命令：defaults write com.apple.finder AppleShowAllFiles -bool true

隐藏Mac隐藏文件的命令：defaults write com.apple.finder AppleShowAllFiles -bool false

需要重启finder，鼠标单击窗口左上角的苹果标志-->强制退出-->Finder-->重新启动

3⃣️删除eclipse-workspace/.metadata/.plugins里面文件，然后重新指定位置的

忙活了一天也没有解决什么问题。最后就想着用最原始的方法，删除最新jdk，换回jdk1.8。查看了java提供的官方文档，删除jdk：

导航到／Library/Java/JavaVirtualMachines并删除该目录下需要删除的jdk，由于mac上删除环境需要管理员权限。可用一下命令：

sudo rm -rf    jdk名称

然后下载安装jdk1.8，运行eclipse，大功告成。。