Java WatchService在某些文件夹上不起作用 [英] Java WatchService doesn't work on some folders

问题描述

我想使用 Java 7 WatchService 来监视 / proc 文件夹，但这不起作用（文件夹中的更改不会被报告）。我已经测试了其他文件夹，比如 / home / user / Desktop 和 / tmp ，它可以工作。可能是什么原因？是因为权限？ / proc 显然属于root，而另一个文件夹属于登录用户。然而， / tmp 也由root拥有，但是它起作用。我正在使用这个基本的实施进行测试。

我的操作系统是Ubuntu 13.10 64bit。这是因为/ proc不是一个正常的文件系统，因此不支持inotify：

/ p>

https://unix.stackexchange.com/questions/90627/notify-of-changes-on-a-file-under-proc
https://unix.stackexchange.com/questions/74713/how-frequently-is -pro-file-system-updated-on-linux？rq = 1

I want to use Java 7 WatchService to monitor /proc folder, but that's not working (changes made in the folder are not reported). I've tested other folders such as /home/user/Desktop and /tmp and it works. What could be the reason? Is it because of permissions? /proc is obviously owned by root whereas the other folder is owned by logged in user. The /tmp however is also owned by root, but it works. I'm using this basic implementation to test it.

My OS is Ubuntu 13.10 64bit. Oracle Java 1.7.0_51.

解决方案

It's because /proc isn't a normal filesystem and therefore doesn't support inotify:

https://unix.stackexchange.com/questions/90627/notify-of-changes-on-a-file-under-proc https://unix.stackexchange.com/questions/74713/how-frequently-is-the-proc-file-system-updated-on-linux?rq=1

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