启动 Eclipse 时出现 java.lang.NullPointerException

Question

我正在使用 Eclipse Juno，当我在某个工作区启动它时出现此错误:

An error has occurred. See error log for more details.

java.lang.NullPointerException

从同一个 SVN 存储库 check out 的其他工作区运行良好。有谁知道为什么会发生这种情况？

在工作区日志中，我得到以下异常:

!ENTRY org.eclipse.m2e.logback.appender 4 0 2014-03-11 13:26:25.798 !MESSAGE Could not add repository index

!ENTRY org.eclipse.ui.workbench 4 2 2014-03-11 13:26:37.470 !MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.ui.workbench". !STACK 0 java.lang.NullPointerException at org.tigris.subversion.subclipse.ui.history.SVNHistoryPage$2.getElements(SVNHistoryPage.java:631) at org.eclipse.jface.viewers.StructuredViewer.getRawChildren(StructuredViewer.java:1010) at org.eclipse.jface.viewers.ColumnViewer.getRawChildren(ColumnViewer.java:703) at org.eclipse.jface.viewers.AbstractTableViewer.getRawChildren(AbstractTableViewer.java:1087) at org.eclipse.jface.viewers.StructuredViewer.getFilteredChildren(StructuredViewer.java:917) at org.eclipse.jface.viewers.StructuredViewer.getSortedChildren(StructuredViewer.java:1067) at org.eclipse.jface.viewers.AbstractTableViewer.internalRefreshAll(AbstractTableViewer.java:701) at org.eclipse.jface.viewers.AbstractTableViewer.internalRefresh(AbstractTableViewer.java:649) at org.eclipse.jface.viewers.AbstractTableViewer.internalRefresh(AbstractTableViewer.java:636) at org.eclipse.jface.viewers.AbstractTableViewer$2.run(AbstractTableViewer.java:592) 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: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:629) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584) at org.eclipse.equinox.launcher.Main.run(Main.java:1438) at org.eclipse.equinox.launcher.Main.main(Main.java:1414)

Answer 1

已解决:清理我的 .metadata 文件夹并在 eclipse 中重新导入项目