java中使用MappedByteBuffer将 File类转ByteBuffer

public static WavFile openWavFile(File file) throws IOException, WavFileException

    {

        FileChannel channel = new FileInputStream(file).getChannel();

        MappedByteBuffer mappedByteBuffer = channel

                .map(FileChannel.MapMode.READ_ONLY, 0, channel.size());

        return openWavFile(mappedByteBuffer);

    }

public static WavFile openWavFile(ByteBuffer buffer) throws IOException, WavFileException

{

。。。。

}

来源：https://www.baeldung.com/java-mapped-byte-buffer