eclipse has occurred. see the log

今天上班，熟悉的打开Eclipse，shit，打不开了，直接报错

java.lang.ClassNotFoundException: javax.xml.parsers.SAXParserFactory
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at
org.eclipse.core.runtime.adaptor.EclipseAdaptor.registerEndorsedXMLParser(EclipseAdaptor.java:272)
at
org.eclipse.core.runtime.adaptor.EclipseAdaptor.frameworkStart(EclipseAdaptor.java:253)
at
org.eclipse.osgi.framework.internal.core.SystemBundleActivator.start(SystemBundleActivator.java:61)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:958)
at java.security.AccessController.doPrivileged(Native Method)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:954)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:937)
at
org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:553)
at
org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:477)
at
org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:273)
at
org.eclipse.osgi.framework.internal.core.StartLevelManager.launch(StartLevelManager.java:243)
at
org.eclipse.osgi.framework.internal.core.SystemBundle.resume(SystemBundle.java:166)
at
org.eclipse.osgi.framework.internal.core.Framework.launch(Framework.java:425)
at org.eclipse.osgi.framework.internal.core.OSGi.launch(OSGi.java:51)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.startup(EclipseStarter.java:216)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:127)
at java.lang.reflect.Method.invoke(Native Method)
at org.eclipse.core.launcher.Main.basicRun(Main.java:185)
at org.eclipse.core.launcher.Main.run(Main.java:704)
at org.eclipse.core.launcher.Main.main(Main.java:688)

看了好久都不知道是什么鬼，怎么办啊，我把.metadata里面的东西删除了，启动的时候还是报错的。

在ecplise的安装目录下面找configurations下面的.setting中找到org.eclipse.ui.ide.prefs，然后将里面的“SHOW_WORKSPACE_SELECTION_DIALOG”的值修改为true。重新打开eclipse，然后会提示选择工作空间，后面就ok了。。