如何获取文件的正确文件创建日期？ [英] How to get proper file creation date of file?

问题描述

我不需要上次修改时间而不是上次文件访问时间，但文件创建时间。我还没有找到有关此信息。也许是一些库？

I need not last modification time and not last file accessed time, but file creation time. I have not found information about this. Maybe some libs?

Path p = Paths.get(f.getAbsoluteFile().toURI());
BasicFileAttributes view = null;
try {
    view = Files.getFileAttributeView(p,
                            BasicFileAttributeView.class).readAttributes();
} catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}
FileTime creationTime = view.creationTime();

此代码创建时间无效，今天返回日期。

In this code creation time is not valid and return today date.

操作系统：Windows 7
Java：SE-1.7

Operation System: Windows 7 Java: SE-1.7

推荐答案

正如yshavit所说，并非所有操作系统都记录创建的日期。但是，您应该能够使用 java.nio.file 来确定具有此功能的操作系统上的此信息 - 请参阅 files.getAttribute - 请注意 BasicFileAttributeView 有一个字段对于 creationTime 。

As yshavit said, not all operating systems record the date created. However, you should be able to use java.nio.file to determine this information on operating systems that do have this functionality - see the documentation for files.getAttribute - note that BasicFileAttributeView has a field for creationTime.

您可以使用 FileSystems.getDefault（）; 确定当前操作系统支持 FileAttributeView 。

You can use FileSystems.getDefault(); to determine what FileAttributeViews are supported on the current operating system.

Files.getAttribute（path，basic：createdAt）; 将返回一个 FileTime 对象，其中包含在支持的系统上创建文件的日期 BasicFileAttributeView 。你必须将它转换为 java.util.Date 对象，但我会让你自己解决这个问题。

Files.getAttribute(path, "basic:createdAt"); will return a FileTime object with the date the file was created on a system that supports BasicFileAttributeView. You'll have to convert it to a java.util.Date object, but I'll let you figure that out on your own.

• NIO API getAttribute（）


• NIO BasicFileAttributeView <的com / javase / 7 / docs / api / java / nio / file / attribute / BasicFileAttributeView.htmlrel =nofollow noreferrer> API / li>
  
• 教程使用 readAttributes（）


• 综合教程


• 另一个StackOverflow thread 同一主题

• NIO API for getAttribute()
• NIO API for BasicFileAttributeView
• A tutorial for using readAttributes()
• A comprehensive tutorial on using FileAttributes
• Another StackOverflow thread on the same topic

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