我彻底查看了文档,但不能 找到答案。问题是我正在尝试让Java播放.mp3文件。但事情是,eclipse不断提出:
访问限制:由于
无法访问LineListener类型 对所需图书馆的限制 /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/rt.jar
这是我的代码:
package net.codejava.sound;
import java.io.File;
import java.io.IOException;
import javax.*;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.LineEvent;
import javax.sound.sampled.LineListener;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.UnsupportedAudioFileException;
/**
* This is an example program that demonstrates how to play back an audio file
* using the Clip in Java Sound API.
* @author www.codejava.net
*
*/
public class Sound implements LineListener {
/**
* this flag indicates whether the playback completes or not.
*/
boolean playCompleted;
/**
* Play a given audio file.
* @param audioFilePath Path of the audio file.
*/
void play(String audioFilePath) {
File audioFile = new File(audioFilePath);
try {
AudioInputStream audioStream = AudioSystem.getAudioInputStream(audioFile);
AudioFormat format = audioStream.getFormat();
DataLine.Info info = new DataLine.Info(Clip.class, format);
Clip audioClip = (Clip) AudioSystem.getLine(info);
audioClip.addLineListener(this);
audioClip.open(audioStream);
audioClip.start();
while (!playCompleted) {
// wait for the playback completes
try {
Thread.sleep(1000);
} catch (InterruptedException ex) {
ex.printStackTrace();
}
}
audioClip.close();
} catch (UnsupportedAudioFileException ex) {
System.out.println("The specified audio file is not supported.");
ex.printStackTrace();
} catch (LineUnavailableException ex) {
System.out.println("Audio line for playing back is unavailable.");
ex.printStackTrace();
} catch (IOException ex) {
System.out.println("Error playing the audio file.");
ex.printStackTrace();
}
}
/**
* Listens to the START and STOP events of the audio line.
*/
@Override
public void update(LineEvent event) {
LineEvent.Type type = event.getType();
if (type == LineEvent.Type.START) {
System.out.println("Playback started.");
} else if (type == LineEvent.Type.STOP) {
playCompleted = true;
System.out.println("Playback completed.");
}
}
public static void main(String[] args) {
String audioFilePath = "E:/Test/Audio.wav";
Sound player = new Sound();
player.play(audioFilePath);
}
}