java - 如何从 Java watchservice 注销目录？

Question

我向我的 watchService 注册了一个文件夹:

path.register(watchService, ENTRY_CREATE, ENTRY_DELETE, ENTRY_MODIFY);

稍后，我想取消此注册。我知道我需要以某种方式告诉 watchService 我想取消哪个 WatchKey。实现此目的的正确函数是什么？

Answer 1

Watchable 接口(interface) javadoc 中的信息提供了注册 Watchable 对象(例如 Path 实例)的方法 < br/>

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公共(public)界面可观看

This interface defines the register method to register the object with a WatchService returning a WatchKey to represent the registration. An object may be registered with more than one watch service. Registration with a watch service is cancelled by invoking the key's cancel method.

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所以你只需要做:

WatchKey watchKey = path.register(watchService, ENTRY_CREATE, ENTRY_DELETE, ENTRY_MODIFY);
...
watchKey.cancel();