如何知道Java中文件删除失败的原因？

问题描述

File file = new File(path);
if (!file.delete())
{
    throw new IOException(
        "Failed to delete the file because: " +
        getReasonForFileDeletionFailureInPlainEnglish(file));
}

有没有一个很好的实现 getReasonForFileDeletionFailureInPlainEnglish（file） 已经在那里了否则我只需要自己写。

Is there a good implementation of getReasonForFileDeletionFailureInPlainEnglish(file) already out there? Or else I'll just have to write it myself.

推荐答案

在Java 6中，不幸的是没有办法确定为什么文件无法删除。使用Java 7，可以使用 java.nio.file.Path＃delete（），如果文件或目录不能请删除。

In Java 6, there is unfortunately no way to determine why a file cannot be deleted. With Java 7, you can use java.nio.file.Path#delete() instead, which will give you a detailed cause of the failure, if the file or directory cannot be deleted.

请注意，file.list（）可能会返回可以删除的目录条目。用于删除的API文档说，只有空目录可以被删除，但是目录被认为是空的，如果包含的文件是例如操作系统的特定元数据

Note that file.list() may return entries for directories, which can be deleted. The API documentation for delete says that only empty directories can be deleted, but a directory is considered empty, if the contained files are e.g. OS specific metadata files.

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