将路径转换为绝对路径

Question

I have a path object that needs to be converted to absolute path.

Path path = Paths.get("..\\this\\that\\blah.txt");

System.out.println(path.toFile().getCanonicalPath());

This is skipping the main project folder due to which I can't access the file. I want something like:

C:\Folder\ProjectFolder\this\\that\\blah.txt

instead of

C:\Folder\this\\that\\blah.txt

Answer 1

Try to get the absolute path from where you call the file itself.

Example:

    File blah = new File("/this/that/blah.txt");
    String blahAP = blah.getAbsolutePath();
    System.out.println("AP: " + blahAP);

This should work, but I have no computer around me at the moment to make sure.

Answer 2

I have the feeling that @Brian Gordon is right and you just need to do:

Path path = Paths.get("this\\that\\blah.txt");

instead of:

Path path = Paths.get("..\\this\\that\\blah.txt");

.. represents the parent directory.
So, if you're in C:\\Folder\\ProjectFolder , .. represents C:\\Folder .

Answer 3

看看getAbsolutePath http://docs.oracle.com/javase/7/docs/api/java/io/File.html#getAbsoluteFile（）