java - 在文件路径中向后走

Question

在我的程序中，我得到了一个文件路径E:\MyProject\ImageUploads\TestImageUpload\target\TestImageUpload2\

我需要向后走并获取E:\MyProject\ImageUploads\TestImageUpload

在java中执行操作的最佳方法是什么？

Answer 1

你是这个意思吗？

for(File file = new File("E:\\MyProject\\ImageUploads\\TestImageUpload\\target\\TestImageUpload2\\"); file != null; file = file.getParentFile())
    System.out.println(file);

输出:

E:\MyProject\ImageUploads\TestImageUpload\target\TestImageUpload2
E:\MyProject\ImageUploads\TestImageUpload\target
E:\MyProject\ImageUploads\TestImageUpload
E:\MyProject\ImageUploads
E:\MyProject
E:\