在Java中,File.canExecute()究竟做了什么? [英] In Java what exactly does File.canExecute() do?
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问题描述
我创建了一个没有执行权限的普通文件但是当我使用这个文件的路径/名称创建一个Java File对象然后调用File.canExecute()时,我得到了结果,而我希望这个方法打电话给假。有人可以解释我在这里缺少的东西吗?
I have created a plain file which does not have execute permission but when I create a Java File object using this file's path/name and then call File.canExecute() I get true as the result, whereas I would expect this method call to return false. Can someone explain what I'm missing here?
Solaris:
$ touch /tmp/nonexecutable
$ ls -l /tmp/nonexecutable
-rw-r--r-- 1 root root 0 May 21 07:48 /tmp/nonexecutable
Java:
String pathName = "/tmp/nonexecutable";
File myFile = new File(pathName);
if (!myFile.canExecute())
{
String errorMessage = "The file is not executable.";
log.error(errorMessage);
throw new RuntimeException(errorMessage);
}
预先感谢您的帮助。
- James
--James
推荐答案
与Java无关 - 你以root身份运行,root是允许一切,无论权限说什么。
Nothing to do with Java - you're running as root, and root is allowed everything, not matter what the permissions say.
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