如何让用户选择一个音频文件，并在Java中播放 [英] How to have the user choose an audio file and play it in Java

问题描述

我希望能够使无论是在用户点击一个按钮，选择从他们的计算机的音频文件（兼容格式的）GUI或控制台应用程序，它扮演，而作为我完全没有经验的GUI中，如果我能得到一个提示，如何实现暂停和播放按钮，以及一个音量电位器/拨号和停止按钮这将是很好。我只知道我会不得不进口 java.io。* 和 sun.audio。* 。

的修改的
我现在的code是这样的：

 进口sun.audio *。 //导入sun.audio包
进口java.awt中的*。
进口java.io. *;
公共类内置扬声器扩展框架实现了FilenameFilter {/ **
 *
 * /
私有静态最后的serialVersionUID长= 4914433234899026080L;
按钮openButton =新按钮（打开）;
按钮为playButton =新按钮（播放）;
按钮loopButton =新按钮（循环）;
按钮STOPBUTTON =新按钮（停止）;
标签名=新标签（）;
文件theFile = NULL;
@燮pressWarnings（{限购}）
AudioData海图= NULL;
InputStream的nowPlaying = NULL;@燮pressWarnings（{德precation}）
公共内置扬声器（）{
    超级（内置扬声器）;
    调整（300，200）;
    面板北=新面板（）;
    north.setLayout（新的FlowLayout（FlowLayout.LEFT））;
    north.add（新标签（文件））;
    north.add（北，文件名）;
    加（北，北）;
    面板南方=新面板（）;
    south.add（openButton）;
    south.add（为playButton）;
    south.add（loopButton）;
    south.add（STOPBUTTON）;
    加（南方，南）;
}@燮pressWarnings（德precation）
公共静态无效的主要（字串[] args）{
    内置扬声器SP =新的内置扬声器（）;
    sp.show（）;
}@燮pressWarnings（{德precation，限购}）
公共无效的open（）{
    的FileDialog的fd =新的FileDialog（这一点，请选择一个.AU文件：）;
    fd.setFilenameFilter（本）;
    fd.show（）;
    尝试{
        theFile =新的文件（fd.getDirectory（）+/+ fd.getFile（））;
        如果（theFile！= NULL）{
            filename.setText（theFile.getName（））;
            FIS的FileInputStream =新的FileInputStream（theFile）;
            语音串流为=新语音串流（FIS）;
            海图= as.getData（）;
        }
    }
    赶上（IOException异常五）{
        通信System.err.println（E）;
    }
}@燮pressWarnings（限购）
公共无效播放（）{
    停止（）;
    如果（海图== NULL）开（）;
    如果（海图！= NULL）{
        AudioDataStream广告=新AudioDataStream（海图）;
        AudioPlayer.player.start（广告）;
        nowPlaying =广告;
    }
}@燮pressWarnings（限购）
公共无效停止（）{
    如果（nowPlaying！= NULL）{
        AudioPlayer.player.stop（nowPlaying）;
        nowPlaying = NULL;
    }
}@燮pressWarnings（限购）
公共无效循环（）{
    停止（）;
    如果（海图== NULL）开（）;
    如果（海图！= NULL）{
        ContinuousAudioDataStream CADS =新ContinuousAudioDataStream（海图）;
        AudioPlayer.player.start（CADS）;
        nowPlaying = CADS;
    }
}公共布尔行动（事件E，对象怎么办）{    如果（e.target ==为playButton）{
        玩（）;
        返回true;
    }
    否则，如果（e.target == openButton）{
        打开（）;
        返回true;
    }
    否则，如果（e.target == loopButton）{
        循环（）;
        返回true;
    }
    否则，如果（e.target == STOPBUTTON）{
        停止（）;
        返回true;
    }    返回false;}公共布尔接受（文件目录，字符串名称）{    名称= name.toLowerCase（）;
    如果（name.endsWith（）非盟）返回true;
    如果（name.endsWith（WAV））返回true;
    返回false;}}
 

解决方案

下面是扮演一个短片的简单方法。

 进口javax.sound.sampled中*。
进口的java.net.URL;
进口javax.swing.JOptionPane中;类ClipTest {  公共静态无效的主要（字串[] args）抛出异常{
    字符串clipName = NULL;
    如果（args.length == 1）{
      clipName = ARGS [0];
    }其他{
      clipName =HTTP：//ps$c$c.org/media/leftright.wav
    }
    的System.out.println（循环'+ clipName +'）;
    网址URL =新的URL（clipName）;
    AIS的AudioInputStream = AudioSystem.getAudioInputStream（URL）;
    夹夹= AudioSystem.getClip（）;
    clip.open（AIS）;
    clip.loop（2）;
    clip.start（）;
    JOptionPane.showMessageDialog（NULL，关闭结束..）;
  }
}
 

样品输入/输出。

  F：\\凸出＆GT;的java ClipTest HTTP：//ps$c$c.org/media/100_2817-linear.wav
循环的http：//ps$c$c.org/media/100_2817-linear.wav。F：\\凸出＆GT;的java ClipTest
循环的http：//ps$c$c.org/media/leftright.wav。F：\\凸出＆GT;
 

I want to be able to make either a GUI or console application where the user clicks a button to select an audio file from their computer (of a compatible format) and it plays, and as I'm completely inexperienced in GUIs, it would be nice if I could be given a hint as to how to implement a pause and play button, as well as a volume slide/dial and a stop button. All I know is I'm gonna have to import java.io.* and sun.audio.*.

EDIT My current code is thus:

import sun.audio.*; //import the sun.audio package
import java.awt.*;
import java.io.*;


public class Boombox extends Frame implements FilenameFilter {

/**
 * 
 */
private static final long serialVersionUID = 4914433234899026080L;
Button openButton = new Button("Open");  
Button playButton = new Button("Play");
Button loopButton = new Button("Loop");
Button stopButton = new Button("Stop");
Label filename = new Label("                   ");
File theFile = null;
@SuppressWarnings({ "restriction" })
AudioData theData = null;
InputStream nowPlaying = null;

@SuppressWarnings({ "deprecation" })
public Boombox() {
    super("Boombox");
    resize(300, 200);
    Panel north = new Panel();
    north.setLayout(new FlowLayout(FlowLayout.LEFT));
    north.add(new Label("File: "));
    north.add("North", filename);
    add("North", north);
    Panel south = new Panel();
    south.add(openButton);
    south.add(playButton);
    south.add(loopButton);
    south.add(stopButton);
    add("South", south);
}

@SuppressWarnings("deprecation")
public static void main(String[] args) {
    Boombox sp = new Boombox();
    sp.show();
}

@SuppressWarnings({ "deprecation", "restriction" })
public void open() {
    FileDialog fd = new FileDialog(this, "Please select a .au file:");
    fd.setFilenameFilter(this);
    fd.show();
    try {
        theFile = new File(fd.getDirectory() + "/" + fd.getFile());
        if (theFile != null) {
            filename.setText(theFile.getName());
            FileInputStream fis = new FileInputStream(theFile);
            AudioStream as = new AudioStream(fis);
            theData = as.getData();
        }
    }
    catch (IOException e) {
        System.err.println(e);
    }
}

@SuppressWarnings("restriction")
public void play() {
    stop();    
    if (theData == null) open();
    if (theData != null) {
        AudioDataStream ads = new AudioDataStream(theData);
        AudioPlayer.player.start(ads);
        nowPlaying = ads;
    }
}

@SuppressWarnings("restriction")
public void stop() {
    if (nowPlaying != null) {
        AudioPlayer.player.stop(nowPlaying);
        nowPlaying = null;
    }
}

@SuppressWarnings("restriction")
public void loop() {
    stop();
    if (theData == null) open();
    if (theData != null) {
        ContinuousAudioDataStream cads = new ContinuousAudioDataStream(theData);
        AudioPlayer.player.start(cads);
        nowPlaying = cads;
    }
}

public boolean action(Event e, Object what) {

    if (e.target == playButton) {
        play();
        return true;
    }
    else if (e.target == openButton) {
        open();
        return true;
    }
    else if (e.target == loopButton) {
        loop();
        return true;
    }
    else if (e.target == stopButton) {
        stop();
        return true;
    }

    return false;

}

public boolean accept(File dir, String name) {

    name = name.toLowerCase();
    if (name.endsWith(".au")) return true;
    if (name.endsWith(".wav")) return true;
    return false;

}

}

解决方案

Here is a simple way to play a short clip.

import javax.sound.sampled.*;
import java.net.URL;
import javax.swing.JOptionPane;

class ClipTest {

  public static void main(String[] args) throws Exception {
    String clipName = null;
    if (args.length==1) {
      clipName = args[0];
    } else {
      clipName = "http://pscode.org/media/leftright.wav";
    }
    System.out.println("Looping '" + clipName + "'.");
    URL url = new URL(clipName);
    AudioInputStream ais = AudioSystem.getAudioInputStream(url);
    Clip clip = AudioSystem.getClip();
    clip.open( ais );
    clip.loop(2);
    clip.start();
    JOptionPane.showMessageDialog(null, "Close to end..");
  }
}

Sample input/output.

F:\proj>java ClipTest http://pscode.org/media/100_2817-linear.wav
Looping 'http://pscode.org/media/100_2817-linear.wav'.

F:\proj>java ClipTest
Looping 'http://pscode.org/media/leftright.wav'.

F:\proj>

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