Java：在Windows和Linux上处理注销或关闭 [英] Java: Handle logoff or shutdown on Windows and Linux

问题描述

除了使用JNI之外，Java GUI应用程序是否有办法响应系统关闭或注销事件？ （在Windows上，JNI会在Linux上使用WM_QUERYENDSESSION吗？）

Is there a way for a Java GUI application to respond to system shutdown or logoff events, other than to use JNI? (On Windows, the JNI would use WM_QUERYENDSESSION, on Linux?)

该方法应该允许程序提示用户保存等，然后继续注销过程。

The method should allow the program to prompt users to save, etc., and then continue the logoff process.

推荐答案

据我所知，Java无法捕获系统关闭或注销事件。

As far as I know, there's no way in Java to catch the system shutdown or logoff events.

但是，当JVM以添加关闭钩子。

AWT的 WindowAdapter 还有一个windowClosing事件，你可以覆盖它挂钩到要监视的窗口。 Swing继承了这个;我相信SWT也是如此。请注意，如果覆盖此事件，必须手动处理窗口！

AWT's WindowAdapter also has a windowClosing event that you can override and hook to a window that you want to monitor. Swing inherits this; I believe SWT does as well. Be aware that you MUST manually dispose of the window if you override this event!

我相信MS Windows会在关闭时触发这些事件。我相信Linux / UNIX上的SIGTERM会做同样的事情，尽管如果这是在关机期间，Linux会很快在SIGKILL上发布应用程序。

I believe that MS Windows will fire these events as it is closing. I believe a SIGTERM on Linux/UNIX does the same, although Linux will SIGKILL an app shortly afterwords if this is during shutdown.

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