Helios Annoyance：在“缓存刷新”期间发生内部错误- 空指针异常

Question

我不确定是什么引发了这个问题。我将其作为错误提交给 Eclipse，但他们关闭了它，并指出这是 JBoss 扩展问题。但是，这个问题不会出现在我的其他工作空间中（都使用 JBoss 工具）。

每次我按 Ctrl+Shift+T 打开新类型时都会发生这种情况。它只报告“缓存刷新”错误。然后，当我输入搜索字符串并单击“确定”时，它会弹出“缓存刷新”错误和“项目过滤”错误。这两个报告都报告了 NPE。

我检查了日志，但在堆栈中没有看到任何特定于 jboss 的内容。

缓存刷新：

!ENTRY org.eclipse.core.jobs 4 2 2011-04-19 11:55:05.983
!MESSAGE An internal error occurred during: "Cache refresh".
!STACK 0
java.lang.NullPointerException
        at org.jboss.ide.eclipse.as.classpath.core.ejb3.EJB3ClasspathContainer.getClasspathEntries(EJB3ClasspathContainer.java:106)
        at org.eclipse.jdt.internal.core.JavaProject.resolveClasspath(JavaProject.java:2656)
        at org.eclipse.jdt.internal.core.JavaProject.resolveClasspath(JavaProject.java:2788)
        at org.eclipse.jdt.internal.core.JavaProject.getResolvedClasspath(JavaProject.java:1920)
        at org.eclipse.jdt.internal.core.search.JavaWorkspaceScope.enclosingProjectsAndJars(JavaWorkspaceScope.java:84)
        at org.eclipse.jdt.internal.core.search.IndexSelector.initializeIndexLocations(IndexSelector.java:181)
        at org.eclipse.jdt.internal.core.search.IndexSelector.getIndexLocations(IndexSelector.java:276)
        at org.eclipse.jdt.internal.core.search.JavaSearchParticipant.selectIndexes(JavaSearchParticipant.java:107)
        at org.eclipse.jdt.internal.core.search.PatternSearchJob.getIndexes(PatternSearchJob.java:79)
        at org.eclipse.jdt.internal.core.search.PatternSearchJob.ensureReadyToRun(PatternSearchJob.java:50)
        at org.eclipse.jdt.internal.core.search.processing.JobManager.performConcurrentJob(JobManager.java:174)
        at org.eclipse.jdt.internal.core.search.BasicSearchEngine.searchAllTypeNames(BasicSearchEngine.java:1135)
        at org.eclipse.jdt.core.search.SearchEngine.searchAllTypeNames(SearchEngine.java:744)
        at org.eclipse.jdt.internal.ui.dialogs.FilteredTypesSelectionDialog$ConsistencyRunnable.refreshSearchIndices(FilteredTypesSelectionDialog.java:654)
        at org.eclipse.jdt.internal.ui.dialogs.FilteredTypesSelectionDialog$ConsistencyRunnable.run(FilteredTypesSelectionDialog.java:637)
        at org.eclipse.jdt.internal.ui.dialogs.FilteredTypesSelectionDialog.reloadCache(FilteredTypesSelectionDialog.java:680)
        at org.eclipse.ui.dialogs.FilteredItemsSelectionDialog$RefreshCacheJob.run(FilteredItemsSelectionDialog.java:1508)
        at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

项目过滤：

java.lang.NullPointerException
        at org.jboss.ide.eclipse.as.classpath.core.ejb3.EJB3ClasspathContainer.getClasspathEntries(EJB3ClasspathContainer.java:106)
        at org.eclipse.jdt.internal.core.JavaProject.resolveClasspath(JavaProject.java:2656)
        at org.eclipse.jdt.internal.core.JavaProject.resolveClasspath(JavaProject.java:2788)
        at org.eclipse.jdt.internal.core.JavaProject.getResolvedClasspath(JavaProject.java:1920)
        at org.eclipse.jdt.internal.core.search.JavaWorkspaceScope.enclosingProjectsAndJars(JavaWorkspaceScope.java:84)
        at org.eclipse.jdt.internal.core.search.IndexSelector.initializeIndexLocations(IndexSelector.java:181)
        at org.eclipse.jdt.internal.core.search.IndexSelector.getIndexLocations(IndexSelector.java:276)
        at org.eclipse.jdt.internal.core.search.JavaSearchParticipant.selectIndexes(JavaSearchParticipant.java:107)
        at org.eclipse.jdt.internal.core.search.PatternSearchJob.getIndexes(PatternSearchJob.java:79)
        at org.eclipse.jdt.internal.core.search.PatternSearchJob.ensureReadyToRun(PatternSearchJob.java:50)
        at org.eclipse.jdt.internal.core.search.processing.JobManager.performConcurrentJob(JobManager.java:174)
        at org.eclipse.jdt.internal.core.search.BasicSearchEngine.searchAllTypeNames(BasicSearchEngine.java:1135)
        at org.eclipse.jdt.core.search.SearchEngine.searchAllTypeNames(SearchEngine.java:846)
        at org.eclipse.jdt.internal.ui.dialogs.FilteredTypesSelectionDialog.fillContentProvider(FilteredTypesSelectionDialog.java:557)
        at org.eclipse.ui.dialogs.FilteredItemsSelectionDialog$FilterJob.filterContent(FilteredItemsSelectionDialog.java:2188)
        at org.eclipse.ui.dialogs.FilteredItemsSelectionDialog$FilterJob.internalRun(FilteredItemsSelectionDialog.java:2130)
        at org.eclipse.ui.dialogs.FilteredItemsSelectionDialog$FilterJob.doRun(FilteredItemsSelectionDialog.java:2102)
        at org.eclipse.ui.dialogs.FilteredItemsSelectionDialog$FilterJob.run(FilteredItemsSelectionDialog.java:2089)
        at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

Answer 1

我必须重新安装 Helios (SR2) 才能消除这些错误。

Answer 2

我面临同样的问题并做了同样的事情。为了避免 Eclipse 出现一些内存问题，您可以增加安装文件夹中 eclipse.ini 文件中的内存使用量，但不要过度使用，这取决于您的计算机 RAM。