Helios Annoyance：在“缓存刷新”期间发生内部错误- 空指针异常
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)
I am not sure what started this problem. I submitted it as a bug to Eclipse but they closed it, stating it is a JBoss extension problem. However, this problem doesn't occur in my other workspace (both utilize the JBoss tools).
It occurs every time I hit Ctrl+Shift+T to open a new type. It only reports the "Cache Refresh" error. Then when I type in a search string and hit OK, it pops up both the "Cache Refresh" error and a "Items filtering" error. Both of these report NPEs.
I inspected the logs but don't see anything jboss-specific in the stacks.
Cache refresh:
!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)
Items Filtering:
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)
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评论（2）
我必须重新安装 Helios (SR2) 才能消除这些错误。
I had to reinstall Helios (SR2) to make these errors go away.
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。
i faced the same problem and did the same thing. to avoid some memory problems with eclipse you can increase the memory use in the eclipse.ini file located in the installation folder, but don't over do it, it depends on your machines ram.