I send WAV files using a client and server, but I want to play the WAV when it received. I try this method but it did not work:
Runtime.getRuntime().exec("C:\\Documents and Settings\\Administratore\\Desktop\\gradpro\\test1\\s1.wav") ;
This the exception that I get:
"Error! It didn't work! java.io.IOException: Cannot run program "C:\\Documents": CreateProcess error=193, %1 is not a valid Win32 application"
What am I doing wrong?
You need to execute the audio player program (probably windows media player or something similar) and then pass the filename (the full path to the file) in as a parameter:
String wavPlayer = "/path/to/winmediaplayer.exe";
String fileToPlay = "/path/to/wav/file.wav";
Runtime.getRuntime().exec(wavPlayer, new String[]{fileToPlay}) ;
That should work.
What's wrong with Javas built in WAV playback support? You can play it back using AudioClip:
private void playBackClip(String fileName) {
try {
AudioInputStream soundStream = null;
if (fileName.startsWith("res:")) {
soundStream = AudioSystem.getAudioInputStream(
Object.class.getResourceAsStream(fileName.substring(4)));
} else {
File audioFile = resMap.get(fileName);
soundStream = AudioSystem.getAudioInputStream(audioFile);
}
AudioFormat streamFormat = soundStream.getFormat();
DataLine.Info clipInfo = new DataLine.Info(Clip.class,
streamFormat);
Clip clip = (Clip) AudioSystem.getLine(clipInfo);
soundClip = clip;
clip.open(soundStream);
clip.setLoopPoints(0, -1);
clip.start();
} catch (UnsupportedAudioFileException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (LineUnavailableException e) {
e.printStackTrace();
}
}
Instead of specifying the media player to use, let windows look it up for you:
String comspec = System.getenv().get("ComSpec");
String fileToPlay = "/path/to/wav/file.wav";
Runtime.getRuntime().exec(comspec, new String[]{"/c", "start", fileToPlay}) ;
You are basically doing something like:
cmd.exe /c start path_to_wav_file.wav
To see all the options start gives you (start is a built-in operation of cmd.exe, not a stand-alone program, which is why you have to run cmd.exe instead of a 'start.exe'), do
start /h
Is the use of the default audio player mandatory? If not you might want to look into Java's AudioSystem .
旧问题,但有记录:
java.awt.Desktop.getDesktop().open(new java.io.File(my_filename));
Try:
Runtime.getRuntime().exec("'C:\Documents and Settings\Administratore\Desktop\gradpro\test1\s1.wav'") ;
Note the extra single quotations. I'm not even sure if your method will work, but give that a go.
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