1

我必须从 URL 播放 .wav 文件，但得到UnsupportedFileException.

下面是代码。

public class LoopSound {
    public static void main(String[] args) throws Exception {
        HostnameVerifier hv = new HostnameVerifier() {

            @Override
            public boolean verify(String urlHostName, SSLSession session) {
                System.out.println("Warning: URL Host: " + urlHostName
                        + " vs. " + session.getPeerHost());
                return true;
            }
        };
        // Now you are telling the JRE to trust any https server.
        // If you know the URL that you are connecting to then this should
        // not be a problem
        try {
            trustAllHttpsCertificates();
        } catch (Exception e) {
            System.out.println("Trustall" + e.getStackTrace());
        }
        HttpsURLConnection.setDefaultHostnameVerifier(hv);
        StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw);
        URL url = new URL(
          "https://74.127.51.154/SiPbx/playback.php?access=subscriber&login=501%40mix&domain=mix.nms.mixnetworks.net&user=501&type=vmail&file=vm-20130109213353000125_netsapiens_com.wav&time=20130110170638&auth=de5dda39287604a88fc4b80c467e161d&submit=PLAY");
        Clip clip = AudioSystem.getClip();
        AudioInputStream ais = AudioSystem.
          getAudioInputStream( url );
        clip.open(ais);
        clip.loop(0);
        javax.swing.JOptionPane.
          showMessageDialog(null, "Close to exit!");
      }

     private static void trustAllHttpsCertificates() throws Exception {

            // Create a trust manager that does not validate certificate chains:

            javax.net.ssl.TrustManager[] trustAllCerts =

            new javax.net.ssl.TrustManager[1];

            javax.net.ssl.TrustManager tm = new TempTrustedManager();

            trustAllCerts[0] = tm;

            javax.net.ssl.SSLContext sc =

            javax.net.ssl.SSLContext.getInstance("SSL");

            sc.init(null, trustAllCerts, null);

            javax.net.ssl.HttpsURLConnection.setDefaultSSLSocketFactory(

            sc.getSocketFactory());

        }
     public static class TempTrustedManager implements
        javax.net.ssl.TrustManager, javax.net.ssl.X509TrustManager {
    public java.security.cert.X509Certificate[] getAcceptedIssuers() {
        return null;
    }

    public boolean isServerTrusted(
            java.security.cert.X509Certificate[] certs) {
        return true;
    }

    public boolean isClientTrusted(
            java.security.cert.X509Certificate[] certs) {
        return true;
    }

    public void checkServerTrusted(
            java.security.cert.X509Certificate[] certs, String authType)
            throws java.security.cert.CertificateException {
        return;
    }

    public void checkClientTrusted(
            java.security.cert.X509Certificate[] certs, String authType)
            throws java.security.cert.CertificateException {
        return;
    }
}

以下是获得的异常：

Exception in thread "main" javax.sound.sampled.UnsupportedAudioFileException: could not get audio input stream from input URL
    at javax.sound.sampled.AudioSystem.getAudioInputStream(Unknown Source)
    at LoopSound.main(LoopSound.java:35)

当我将上述 URL 放在浏览器的地址栏中时，我可以下载该文件，但我无法以编程方式播放。我该如何解决这个问题？

编辑

我将链接更改为

https://74.127.51.154/SiPbx/playback.php?access=subscriber&login=501%40mix&domain=mix.nms.mixnetworks.net&user=501&type=vmail&file=vm-20130109213353000125_netsapiens_com.wav&time=20130110170638&auth=de5dda39287604a88fc4b80c467e161d&submit=PLAY

现在上面的链接放在浏览器上下载文件。

但是当我现在执行程序时得到新的异常。

Exception in thread "main" javax.sound.sampled.LineUnavailableException: line with format ULAW 8000.0 Hz, 8 bit, mono, 1 bytes/frame,  not supported.
    at com.sun.media.sound.DirectAudioDevice$DirectDL.implOpen(Unknown Source)
    at com.sun.media.sound.DirectAudioDevice$DirectClip.implOpen(Unknown Source)
    at com.sun.media.sound.AbstractDataLine.open(Unknown Source)
    at com.sun.media.sound.DirectAudioDevice$DirectClip.open(Unknown Source)
    at com.sun.media.sound.DirectAudioDevice$DirectClip.open(Unknown Source)
    at LoopSound.main(LoopSound.java:36)

提前致谢。

4

2 回答 2

2

WAV是一种容器格式（就像 zip 文件是许多不同文件的容器），因此没有实际的 WAV 音频格式（LPCM 是最常见的）。在这种情况下，您的 WAV 包含一种名为“CCITT u-Law”的格式，该格式并未得到广泛支持（它用于 Cisco VoIP 电话）。我还没有看到可以读取它的 Java 库，但也许知道要查找的内容会有所帮助。

于 2013-01-10T19:39:43.700 回答
0

下面的链接帮助了我，我现在可以播放 wav 文件了。

如何播放格式为 CCITT u-Law 的 wav 文件

编辑

根据 Millimoose 的评论，我正在粘贴上面链接中的一些代码以帮助其他人。

我正在更改CCITT U-Law to PCM_SIGNED确切的 wav 格式的 wav 文件的格式。

URL url = new URL(
                          "https://sssss/xxxxx/playback.php?access=subscriber&login=501%40mix&domain=mix.nms.mixnetworks.net&user=501&type=vmail&file=vm-20130109213243000082_mixnetworks_net.wav&time=20130110170638&auth=c43ff32546e126be9b895bbf225b2e75&submit=PLAY");
                 AudioInputStream fis =
                  AudioSystem.getAudioInputStream(url);
                 System.out.println("File AudioFormat: " + fis.getFormat());
                 AudioInputStream ais = AudioSystem.getAudioInputStream(
                  AudioFormat.Encoding.PCM_SIGNED,fis);
                 AudioFormat af = ais.getFormat();
                 System.out.println("AudioFormat: " + af.toString());

                 int frameRate = (int)af.getFrameRate();
                 System.out.println("Frame Rate: " + frameRate);
                 int frameSize = af.getFrameSize();
                 System.out.println("Frame Size: " + frameSize);

                 SourceDataLine line = AudioSystem.getSourceDataLine(af);
                 line.addLineListener(new MyLineListener());

                 line.open(af);
                 int bufSize = line.getBufferSize();
                 System.out.println("Buffer Size: " + bufSize);

                 line.start();

                 byte[] data = new byte[bufSize];
                 int bytesRead;

                 while ((bytesRead = ais.read(data,0,data.length)) != -1)
                     line.write(data,0,bytesRead);

                 line.drain();
                 line.stop();
                 line.close();
于 2013-01-10T19:50:30.907 回答