Java AudioSystem和TargetDataLine

我试图从我的电脑上接收来自线路输入的音频,为此我正在使用AudioSystem类.静态AudioSystem.write方法有两种选择之一：写入文件或写入流.我可以让它写入文件就好了,但每当我尝试写入流时,我都会抛出java.io.IOException(未指定流长度).至于我的缓冲区,我使用的是ByteArrayOutputStream.是否有其他类型的流我应该使用或搞乱其他地方？

同样在相关主题中,可以通过调用read直接在(TargetDataLine)中对音频线进行采样.这是进行音频捕获还是使用AudioSystem的首选方式？

更新
请求的源代码：

final private TargetDataLine line;
final private AudioFormat format;
final private AudioFileFormat.Type fileType;
final private AudioInputStream audioInputStream;
final private ByteArrayOutputStream bos;

// Constructor, etc.

public void run()
{
    System.out.println("AudioWorker Started");
    try
    {
        line.open(format);
        line.start();

        // This commented part is regarding the second part
        // of my question
        // byte[] buff = new byte[512];
        // int bytes = line.read(buff, 0, buff.length);

        AudioSystem.write(audioInputStream, fileType, bos);

    }
    catch ( Exception e )
    {
        e.printStackTrace();
    }

    System.out.println("AudioWorker Finished");
}


// Stack trace in console
AudioWorker Started
java.io.IOException: stream length not specified
    at com.sun.media.sound.WaveFileWriter.write(Unknown Source)
    at javax.sound.sampled.AudioSystem.write(Unknown Source)
    at AudioWorker.run(AudioWorker.java:41)
AudioWorker Finished

解决方法:

来自AudioSystem.write JavaDoc：

Writes a stream of bytes representing an audio file of the specified file type to the output stream provided. Some file types require that the length be written into the file header; such files cannot be written from start to finish unless the length is known in advance. An attempt to write a file of such a type will fail with an IOException if the length in the audio file type is AudioSystem.NOT_SPECIFIED.

标签：java,audio,audio-recording,javasound
来源： https://codeday.me/bug/20190527/1160907.html