如何制作非相对JavaFx“媒体”

Question

Whenever I try to convert a File to a JavaFx Media , it tries to make the path relative, which I do not want. I'm using a Mac.

This is my code:

static String AUDIO_URL_TO_TEST =  "file://Users/Mike/Desktop/calb.mp3";
basicTime.getAudioOutput().setSource(new File(AUDIO_URL_TO_TEST));

I've tried almost everything for AUDIO_URL_TO_TEST, such as:

static String AUDIO_URL_TO_TEST =  "file:///Users/Mike/Desktop/calb.mp3";
static String AUDIO_URL_TO_TEST =  "file:/c:/Users/Mike/Desktop/calb.mp3";
static String AUDIO_URL_TO_TEST =  "/Users/Mike/Desktop/calb.mp3";
static String AUDIO_URL_TO_TEST =  "~/Users/Mike/Desktop/calb.mp3";

This is the code that setSource() calls:

Media m = new Media(source.getAbsoluteFile().toURI().toURL().toString());
player = new MediaPlayer(m);

Media ends up as something like this: /path/to/eclipse/directory/file://Users/Mike/Desktop/Calb.mp3 , trying to make it relative.

I've tried things other than source.getAbsoluteFile().toURI().toURL().toString() , with just as little luck.

A side question: Why does the Media class only accept strings? That seems like a horrible design. Strings were meant to contain text, not reference files.

Answer 1

The API doc of Media says:

The Media class represents a media resource. It is instantiated from the string form of a source URI. ...

So the constructor of it converts the String path to URI. But since none of the example paths in your question is a valid URI, Media treated them as relative paths. For more info please refer to File , URI and file protocol documentations. The valid URI can be:

File f = new File("C:/Users/Mike/Desktop/Calb.mp3");
Media m = new Media(f.toURI().toString());

Alternatively,

URI uri = new URI("file:///C:/Users/Mike/Desktop/Calb.mp3");
// or
URI uri = new URI("file:/C:/Users/Mike/Desktop/Calb.mp3");
// in short.
Media m = new Media(uri.toString());