第一次在mac上安裝eclipse，并配置java環(huán)境，一切都摸索著來，看了好多帖子，最開始說mac上自帶了java環(huán)境，安裝eclipse可以直接使用了，結果在官網(wǎng)上下載后，提示安裝jdk，自動跳轉至蘋果推薦的1.6版本，并不能解決問題，遂到Oracle官網(wǎng)下載最新jdk，滿心歡喜安裝好后，還是提示了新的錯誤（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)
幾乎嘗試了帖子里所有的方法：
1??eclipse -clean
2??刪除 .metadata目錄下.plugins/org.eclipse.e4.workbench，使用此方法需要顯示隱藏文件顯示Mac隱藏文件的命令：defaults write com.apple.finder AppleShowAllFiles -bool true
隱藏Mac隱藏文件的命令：defaults write com.apple.finder AppleShowAllFiles -bool false
需要重啟finder，鼠標單擊窗口左上角的蘋果標志-->強制退出-->Finder-->重新啟動
3??刪除eclipse-workspace/.metadata/.plugins里面文件，然后重新指定位置的
忙活了一天也沒有解決什么問題。最后就想著用最原始的方法，刪除最新jdk，換回jdk1.8。查看了java提供的官方文檔，刪除jdk：
導航到／Library/Java/JavaVirtualMachines并刪除該目錄下需要刪除的jdk，由于mac上刪除環(huán)境需要管理員權限。可用一下命令：
sudo rm -rf? ? jdk名稱
然后下載安裝jdk1.8，運行eclipse，大功告成。。
