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我已经将 gwt 与 Hibernate 集成，但是当我创建 hibernate.reveng.xml 时，我有一个错误，我不能实体 bean 类。错误消息；

从插件调用代码时出现问题：“org.eclipse.core.resources”。[在此处输入链接描述][1]

java.lang.NullPointerException
at org.jboss.ide.eclipse.archives.core.WorkspaceChangeListener$2.visit(WorkspaceChangeListener.java:74)
at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:69)
at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:49)
at org.jboss.ide.eclipse.archives.core.WorkspaceChangeListener.resourceChanged(WorkspaceChangeListener.java:70)
at org.eclipse.core.internal.events.NotificationManager$1.run(NotificationManager.java:291)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:285)
at org.eclipse.core.internal.events.NotificationManager.broadcastChanges(NotificationManager.java:149)
at org.eclipse.core.internal.resources.Workspace.broadcastPostChange(Workspace.java:395)
at org.eclipse.core.internal.resources.Workspace.checkpoint(Workspace.java:557)
at org.eclipse.ltk.core.refactoring.PerformChangeOperation$1.run(PerformChangeOperation.java:263)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2344)
at org.eclipse.ltk.core.refactoring.PerformChangeOperation.executeChange(PerformChangeOperation.java:306)
at org.eclipse.ltk.internal.ui.refactoring.UIPerformChangeOperation.executeChange(UIPerformChangeOperation.java:92)
at org.eclipse.ltk.core.refactoring.PerformChangeOperation.run(PerformChangeOperation.java:218)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2344)
at org.eclipse.ltk.internal.ui.refactoring.WorkbenchRunnableAdapter.run(WorkbenchRunnableAdapter.java:87)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)
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1 回答 1

0

这个问题的主题最好是这样的： NullPointerException from org.jboss.ide.eclipse.archives.core.WorkspaceChangeListener（从插件调用代码时出现问题：“org.eclipse.core.resources”。

我在用：

  • JBoss 开发人员工作室（核心功能）7.0.1.GA-v20130930-2238-B7 com.jboss.jbds.product.feature.feature.group JBoss 由 Red Hat
    • （见 Eclipse->Help->About->Installation Details->Installed Software）
  • JBossTools Archives 核心插件 3.4.100.Final-v20130717-0846-B106 (org.jboss.ide.eclipse.archives.core)
    • （见 Eclipse->Help->About->Installation Details->Plug-ins）

我没有找到最终答案，但有几点可以缩小原因（如果不需要，在 Eclipse 中卸载 JBOSS Dev Tools可能会解决它）：

  • 已经修复了类似的错误，但没有进一步解释可能导致它的原因：

  • 2008：这里我们有更多（插件代码相关）开发人员提示：https ://issues.jboss.org/browse/JBIDE-2746?page=com.atlassian.jira.plugin.system.issuetabpanels:changehistory-tabpanel&_sscc =t

    • 忘记设置组件

    • 忘了关

    • 当资源 = 工作区根时的 NPE

  • 我的一些相关异常（这似乎不是原因，而是“问题触发器”）：

    • AutoBuildJob.doBuild - 触发

      java.lang.NullPointerException
at org.jboss.ide.eclipse.archives.core.WorkspaceChangeListener$2.visit(WorkspaceChangeListener.java:74)
at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:69)
at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:49)
at org.jboss.ide.eclipse.archives.core.WorkspaceChangeListener.resourceChanged(WorkspaceChangeListener.java:70)
at org.eclipse.core.internal.events.NotificationManager$1.run(NotificationManager.java:291)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:285)
at org.eclipse.core.internal.events.NotificationManager.broadcastChanges(NotificationManager.java:149)
at org.eclipse.core.internal.resources.Workspace.broadcastPostChange(Workspace.java:396)
at org.eclipse.core.internal.resources.Workspace.endOperation(Workspace.java:1531)
at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:156)
at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)

    • JavaScriptPreferencesManager.createSuspendOnException - 触发

      java.lang.NullPointerException
at org.jboss.ide.eclipse.archives.core.WorkspaceChangeListener$2.visit(WorkspaceChangeListener.java:74)
at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:69)
at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:49)
at org.jboss.ide.eclipse.archives.core.WorkspaceChangeListener.resourceChanged(WorkspaceChangeListener.java:70)
at org.eclipse.core.internal.events.NotificationManager$1.run(NotificationManager.java:291)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:285)
at org.eclipse.core.internal.events.NotificationManager.broadcastChanges(NotificationManager.java:149)
at org.eclipse.core.internal.resources.Workspace.broadcastPostChange(Workspace.java:396)
at org.eclipse.core.internal.resources.Workspace.endOperation(Workspace.java:1531)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2354)
at org.eclipse.debug.core.model.Breakpoint.run(Breakpoint.java:341)
at org.eclipse.wst.jsdt.debug.internal.core.breakpoints.JavaScriptExceptionBreakpoint.<init>(JavaScriptExceptionBreakpoint.java:79)
at org.eclipse.wst.jsdt.debug.internal.core.JavaScriptPreferencesManager.createSuspendOnException(JavaScriptPreferencesManager.java:168)
at org.eclipse.wst.jsdt.debug.internal.core.JavaScriptPreferencesManager.access$2(JavaScriptPreferencesManager.java:166)
at org.eclipse.wst.jsdt.debug.internal.core.JavaScriptPreferencesManager$StartJob.run(JavaScriptPreferencesManager.java:80)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)

    • DebugUIPlugin.buildAndLaunch -相关/触发

      java.lang.NullPointerException
at org.jboss.ide.eclipse.archives.core.WorkspaceChangeListener$2.visit(WorkspaceChangeListener.java:74)
at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:69)
at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:49)
at org.jboss.ide.eclipse.archives.core.WorkspaceChangeListener.resourceChanged(WorkspaceChangeListener.java:70)
at org.eclipse.core.internal.events.NotificationManager$1.run(NotificationManager.java:291)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:285)
at org.eclipse.core.internal.events.NotificationManager.broadcastChanges(NotificationManager.java:149)
at org.eclipse.core.internal.resources.Workspace.broadcastPostChange(Workspace.java:396)
at org.eclipse.core.internal.resources.Workspace.endOperation(Workspace.java:1531)
at org.eclipse.core.internal.resources.Workspace.buildInternal(Workspace.java:532)
at org.eclipse.core.internal.resources.Workspace.build(Workspace.java:423)
at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:830)
at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:707)
at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:1018)
at org.eclipse.debug.internal.ui.DebugUIPlugin$8.run(DebugUIPlugin.java:1222)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)

    • …… InternalWorkspaceJob.run_

    • …… at org.jboss.tools.common.model.filesystems.impl.EclipseFileBodySource.write_

    • ...

于 2013-11-15T07:49:43.257 回答