如何使用JButton播放.wav文件？

Question

所以最近，我一直在嘗試制作自己的Mario游戲（對我自己來說，可能是為了向其他朋友展示）。 游戲包括按鈕。 當我單擊其他游戲中的按鈕時，它會播放聲音。 我很想將該功能添加到我的游戲中。 問題是，它無法播放。 我的源代碼是：

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;

import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class JButtonClick {

    JButton test = new JButton("Click Me!");
    JPanel panel = new JPanel();

    public void playSound(String soundName)
     {
       try 
       {
        AudioInputStream audioInputStream = AudioSystem.getAudioInputStream(new File(soundName).getAbsoluteFile());
        Clip clip = AudioSystem.getClip();
        clip.open(audioInputStream);
        clip.start();
       }
       catch(Exception ex)
       {
         System.out.println("Error with playing sound.");
         ex.printStackTrace( );
       }
     }


    public JButtonClick() {
        JFrame frame = new JFrame("Button-Click test");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocationRelativeTo(null);
        frame.pack();
        frame.add(panel);
        frame.setSize(800, 600);
        frame.setResizable(true);
        frame.setVisible(true);

        panel.add(test);

        test.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e)
            {
             playSound("JButton.wav");
            }
        });
    }
    public static void main(String[] args) {
        new JButtonClick();
    }
}

我的.wav文件與此類位於同一軟件包中。 但是它沒有播放我想要的聲音，而是這樣說：

java.io.FileNotFoundException: C:\Users\diego\workspace\Super Mario Bros 1\JButton.wav (The system cannot find the file specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(Unknown Source)
at com.sun.media.sound.WaveFloatFileReader.getAudioInputStream(Unknown Source)
at javax.sound.sampled.AudioSystem.getAudioInputStream(Unknown Source)
at JButtonClick.playSound(JButtonClick.java:21)
at JButtonClick$1.actionPerformed(JButtonClick.java:49)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

我究竟做錯了什么？！

Answer 1

這是由於放置.wav文件而引起的問題。

根據您的問題，已將其與此類放在同一包中，這就是為什么您得到FileNotFoundException的原因。

讓我解釋一下new File(pathname)工作原理：

關於File的 Javadoc說：

路徑名，無論是抽象路徑還是字符串形式，都可以是絕對路徑或相對路徑。 絕對路徑名是完整的，因為不需要其他信息即可找到它表示的文件。 相反，相對路徑名必須根據從其他路徑名獲取的信息來解釋。 默認情況下，java.io包中的類始終針對當前用戶目錄解析相對路徑名。

• 如果您正在Eclipse中運行此應用程序，然后將.wav文件直接放置在項目中（ src文件夾外部），如下所示：

   AudioSystem.getAudioInputStream(new File("Jbutton.wav")); 

• 您也可以將其放在resource文件夾中進行嘗試。

   AudioSystem.getAudioInputStream(new File("resources/Jbutton.wav")); 

Answer 2

使用NetBeans播放自定義聲音。
首先導入一些像這樣的包或類名

   import java.applet.Applet;
   import java.applet.AudioClip;
   import java.net.URL;

無法工作，因為在java.lang.NullPointerException上生成錯誤

URL url = getClass().getResource("\\dbmsystem\\src\\sound\\Your_sound_name.wav");

URL url = getClass().getResource("G:\\zala\\dbmsystem\\src\\sound\\Your_sound_name.wav");

但是像這樣正確工作

URL url = getClass().getResource("/sound/Your_sound_name.wav");    
AudioClip clip = Applet.newAudioClip(url);
clip.play();