JFileChooser - 选择音频（.wav） - Java

Question

我在选择wav时遇到了问题。附近是代码：

JFileChooser chooser = new JFileChooser(); 
FileNameExtensionFilter filter = new FileNameExtensionFilter(
          "mp3 & wav Images", "wav", "mp3"); 
chooser.setFileFilter(filter); 
int returnVal = chooser.showOpenDialog(getParent()); 
if(returnVal == JFileChooser.APPROVE_OPTION) { 
     System.out.println("You chose to open this file: " + chooser.getSelectedFile().getName()); 
} 

InputStream in = new FileInputStream(chooser.getSelectedFile().getAbsolutePath()); 
AudioStream as = new AudioStream(in); 
AudioPlayer.player.start(as); 

我在eclipse错误语音串流和AudioPlayer，我使用JDK 7。如何解决这个问题？

Answer 1

这个SSCCE适合我。我正在linux上运行jdk 1.7.0_45。我与文件测试它

/usr/lib/libreoffice/share/gallery/sounds/train.wav

Main.java

import sun.audio.AudioPlayer; 
import sun.audio.AudioStream; 
import javax.swing.*; 
import javax.swing.filechooser.FileNameExtensionFilter; 
import java.io.FileInputStream; 
import java.io.InputStream; 

/** 
* http://stackoverflow.com/questions/20639187/jfilechooser-select-audio-wav-java 
*/ 
public class Main { 
    public static void main(String[] args) throws Exception { 
     JFileChooser chooser = new JFileChooser(); 
     chooser.setFileFilter(new FileNameExtensionFilter("mp3 & wav Images", "wav", "mp3")); 
     if (chooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) { 
      InputStream in = new FileInputStream(chooser.getSelectedFile().getAbsolutePath()); 
      AudioStream as = new AudioStream(in); 
      AudioPlayer.player.start(as); 
     } 
     // Move the code that was here, to play the file, inside the if statement so the 
     // application doesn't crash if the user doesn't select a file to play. 
    } 
} 

你可以在命令行中使用以下测试：

javac Main.java 
java Main 

在代码，您张贴，如果您没有从JFileChooser中选择文件，则会产生运行时错误，因为即使用户没有选择文件，也要访问所选文件。

Answer 2

试试下面的代码片段，为我工作好几次：

... 
URL url = ClassLoader.getResource(chooser.getSelectedFile().getAbsolutePath()); 
AudioInputStream ais = AudioSystem.getAudioInputStream(url); 
Clip clip = AudioSystem.getClip(); 
clip.open(ais); 
... 

在How to cast from InputStream to AudioInputStream

BTW还讨论：你的代码工作在我的机器上很好...