用Java按顺序播放多个音频部件，不是同时播放。代码如下：
List<String> files = new ArrayList<String>();
files.add("barcode_prefix.wav");
for (char letter : barcode.toCharArray())
{
files.add(letter + ".wav");
}
files.add("barcode_suffix.wav");
byte[] buffer = new byte[4096];
for (String file : files)
{
try
{
AudioInputStream is = AudioSystem.getAudioInputStream(this.getClass().getResourceAsStream(file));
AudioFormat format = is.getFormat();
SourceDataLine line = AudioSystem.getSourceDataLine(format);
line.open(format);
line.start();
while (is.available() > 0)
{
int len = is.read(buffer);
line.write(buffer, 0, len);
}
line.drain(); // **[DEIT]** wait for the buffer to empty before closing the line
line.close();
}
catch (Exception e)
{
e.printStackTrace();
}
}
这个我在本地播放没有问题，放到服务器上会报错：
java.io.IOException: mark/reset not supported at java.util.zip.InflaterInputStream.reset(Unknown Source) at com.sun.media.sound.SoftMidiAudioFileReader.getAudioInputStream(Unknown Source) at javax.sound.sampled.AudioSystem.getAudioInputStream(Unknown Source) at com.yulong.mes.winapp.form.quality.ForBatchOperationForm$PlayAudioRunnable.run(ForBatchOperationForm.java:4317) at java.lang.Thread.run(Unknown Source)
网上说要用BufferedInputStream封装一下。修改下代码确实如此：
List<String> files = new ArrayList<String>();
files.add("barcode_prefix.wav");
for (char letter : barcode.toCharArray())
{
files.add(letter + ".wav");
}
files.add("barcode_suffix.wav");
byte[] buffer = new byte[4096];
for (String file : files)
{
try
{
InputStream stream = this.getClass().getResourceAsStream(file);
InputStream bufferedIn = new BufferedInputStream(stream);
AudioInputStream is = AudioSystem.getAudioInputStream(bufferedIn);
AudioFormat format = is.getFormat();
SourceDataLine line = AudioSystem.getSourceDataLine(format);
line.open(format);
line.start();
while (is.available() > 0)
{
int len = is.read(buffer);
line.write(buffer, 0, len);
}
line.drain(); // **[DEIT]** wait for the buffer to empty before closing the line
line.close();
}
catch (Exception e)
{
e.printStackTrace();
}
}
