Java - 复制 JPG 同时保留所有文件属性

Question

在保持文件所有属性(创建日期、日期等)的同时移动/复制文件的最佳方法是什么？

谢谢

Answer 1

如果您使用的是 Java 7，请使用 java.nio.file.Files.copy(Path source, Path target, CopyOption... options)

使用 COPY_ATTRIBUTES 选项来维护上次修改时间:

COPY_ATTRIBUTES Attempts to copy the file attributes associated with this file to the target file. The exact file attributes that are copied is platform and file system dependent and therefore unspecified. Minimally, the last-modified-time is copied to the target file if supported by both the source and target file store. Copying of file timestamps may result in precision loss.

已添加强调

对于Java 6及更早版本，Apache commons具有复制文件的功能

    org.apache.commons.io.FileUtils.copyFile(File srcFile, File destFile,
boolean preserveFileDate)

注意评论

Setting preserveFileDate to true tries to preserve the file's last modified date/times using File.setLastModified(long), however it is not guaranteed that the operation will succeed. If the modification operation fails, no indication is provided.

这只会尝试保留修改日期，而不是其他文件属性。

否则，您将必须使用 Runtime.exec 或类似的东西来运行外部进程。