java - Netbeans 保存挂起

Question

我有一个 Editor TopComponent 实现。出于某种原因，当我保存文档时，它会引发错误。下面列出的是错误。我不知道从哪里开始这个异常(exception)。你能分享你所知道的吗？谢谢

java.lang.IllegalArgumentException: Self-causation not permitted 
   at java.lang.Throwable.initCause(Throwable.java:458) 
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.MutualExclusionSupport.addStack(MutualExclusionSupport.java:122) 
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.MutualExclusionSupport.addStack(MutualExclusionSupport.java:109) 
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.MutualExclusionSupport.addResource(MutualExclusionSupport.java:98) 
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObj.getOutputStream(FileObj.java:127) 
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObj.getOutputStream(FileObj.java:102) 
   at org.openide.text.DataEditorSupport$Env.outputStream(DataEditorSupport.java:891) 
   at org.openide.text.CloneableEditorSupport.saveDocument(CloneableEditorSupport.java:1172) 
   at org.openide.text.DataEditorSupport.superSaveDoc(DataEditorSupport.java:602) 
   at org.openide.text.DataEditorSupport$SaveImpl.run(DataEditorSupport.java:1315) 
   at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:127) 
   at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:609) 
   at org.openide.filesystems.FileUtil.runAtomicAction(FileUtil.java:415) 
   at org.openide.text.DataEditorSupport.saveDocument(DataEditorSupport.java:598) 
   at org.netbeans.modules.openide.loaders.SimpleES$SaveCookieImpl.save(SimpleES.java:226) 
   at org.openide.actions.SaveAction.performAction(SaveAction.java:132) 
   at org.openide.actions.SaveAction.performAction(SaveAction.java:102) 
   at org.openide.actions.SaveAction$Delegate.actionPerformed(SaveAction.java:249) 
   at org.openide.awt.ContextAction$Performer.actionPerformed(ContextAction.java:231) 
   at org.openide.awt.ContextManager.actionPerformed(ContextManager.java:257) 
   at org.openide.awt.ContextAction.actionPerformed(ContextAction.java:109) 
   at org.openide.util.actions.ActionInvoker$1.run(ActionInvoker.java:93) 
   at org.openide.util.actions.ActionInvoker$ActionRunnable.actionPerformed(ActionInvoker.java:162) 
   at org.netbeans.core.ModuleActions.invokeAction(ModuleActions.java:109) 
   at org.netbeans.modules.openide.actions.ActionsBridgeImpl.invokeAction(ActionsBridgeImpl.java:60) 
   at org.openide.util.actions.ActionInvoker$ActionRunnable.doRun(ActionInvoker.java:153) 
   at org.openide.util.actions.ActionInvoker$2.run(ActionInvoker.java:110) 
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1432) 
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2044) 
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to 
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:424) 
   at org.openide.util.actions.ActionInvoker.doPerformAction(ActionInvoker.java:114) 
   at org.openide.util.actions.ActionInvoker.invokeAction(ActionInvoker.java:99) 
   at org.openide.awt.GeneralAction$BaseDelAction.actionPerformed(GeneralAction.java:234) 
   at org.openide.windows.TopComponent.processKeyBinding(TopComponent.java:1176) 
   at javax.swing.JComponent.processKeyBindings(JComponent.java:2940) 
   at javax.swing.JComponent.processKeyEvent(JComponent.java:2842) 
   at java.awt.Component.processEvent(Component.java:6282) 
   at java.awt.Container.processEvent(Container.java:2229) 
   at java.awt.Component.dispatchEventImpl(Component.java:4861) 
   at java.awt.Container.dispatchEventImpl(Container.java:2287) 
   at java.awt.Component.dispatchEvent(Component.java:4687) 
   at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1895) 
   at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:762) 
   at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1027) 
   at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:899) 
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:727) 
   at java.awt.Component.dispatchEventImpl(Component.java:4731) 
   at java.awt.Container.dispatchEventImpl(Container.java:2287) 
   at java.awt.Window.dispatchEventImpl(Window.java:2719) 
   at java.awt.Component.dispatchEvent(Component.java:4687) 
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:723) 
   at java.awt.EventQueue.access$200(EventQueue.java:103) 
   at java.awt.EventQueue$3.run(EventQueue.java:682) 
   at java.awt.EventQueue$3.run(EventQueue.java:680) 
   at java.security.AccessController.doPrivileged(Native Method) 
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) 
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87) 
   at java.awt.EventQueue$4.run(EventQueue.java:696) 
   at java.awt.EventQueue$4.run(EventQueue.java:694) 
   at java.security.AccessController.doPrivileged(Native Method) 
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) 
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:693) 
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159) 
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242) 
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161) 
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150) 
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146) 
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138) 
[catch] at java.awt.EventDispatchThread.run(EventDispatchThread.java:91) 

编辑 1

我有一个 dataObject 和一个 VisualElement 子类，它们配置了新的 mime 类型 text/x-puml。一旦我将它们改回 text/plain ，事情就开始工作了。我搜索了 text/plain 以查看是否遗漏了对 text/x-puml 的任何更改，但我找不到任何内容。为了将 mime 类型更改为 text/x-puml，还有什么我应该更改的吗？

编辑 2

现在似乎偶尔发生，但经常发生。如果我有自定义 mime 类型，是否需要实现自己的 SaveCookie 或 Savable？

Answer 1

它看起来像一个信号量问题。

系统无法保存该文件，因为该文件上有独占锁。另一个独占锁(根据保存需要)是不可能的。

尝试查看文件处理。某处必须是一把锁。