java中怎么将多个音频文件拼接合成一个

<dependencies>  
    <!-- MP3处理库 -->  
    <dependency>  
        <groupId>javazoom</groupId>  
        <artifactId>jlayer</artifactId>  
        <version>1.0.1</version>  
    </dependency>  
    <!-- 音频处理库 -->  
    <dependency>  
        <groupId>be.tarsos.dsp</groupId>  
        <artifactId>TarsosDSP</artifactId>  
        <version>YOUR_VERSION</version>  
    </dependency>  
    <!-- 其他可能需要的库，如文件操作等 -->  
</dependencies>

import javazoom.jl.decoder.Bitstream;  
import javazoom.jl.decoder.Decoder;  
import javazoom.jl.decoder.Header;  
import javazoom.jl.decoder.SampleBuffer;  
// ... 其他必要的导入 ...  
public class AudioMerger {  
    public void mergeAudioFiles(List<File> inputFiles, File outputFile) throws IOException {  
        // 这里假设我们有一个方法来处理PCM数据的合并和编码回MP3  
        byte[] mergedPcmData = mergePcmData(inputFiles);  
        // 编码回MP3的代码（这里省略，因为需要额外的库）  
        // encodePcmToMp3(mergedPcmData, outputFile);  
    }  
    private byte[] mergePcmData(List<File> inputFiles) throws IOException {  
        // 初始化合并的PCM数据（这里只是伪代码）  
        ByteArrayOutputStream mergedData = new ByteArrayOutputStream();  
        for (File file : inputFiles) {  
            Bitstream bitstream = new Bitstream(new FileInputStream(file));  
            Decoder decoder = new Decoder();  
            Header frameHeader = null;  
            try {  
                while ((frameHeader = bitstream.readFrame()) != null) {  
                    SampleBuffer output = (SampleBuffer) decoder.decodeFrame(frameHeader, bitstream);  
                    // 将output中的数据追加到mergedData中（这里省略具体实现）  
                }  
            } finally {  
                if (bitstream != null) bitstream.close();  
            }  
        }  
        // 返回合并后的PCM数据（这里只是一个示例，实际上您可能需要处理采样率、声道数等）  
        return mergedData.toByteArray();  
    }  
    // ... 其他必要的代码 ...  
}

import javax.sound.sampled.*;  
import java.io.*;  
public class WavMerger {  
    public static void main(String[] args) {  
        // 假设我们有两个WAV文件要合并  
        File wavFile1 = new File("input1.wav");  
        File wavFile2 = new File("input2.wav");  
        File outputFile = new File("merged.wav");  
        try {  
            mergeWavFiles(new File[]{wavFile1, wavFile2}, outputFile);  
            System.out.println("WAV files merged successfully!");  
        } catch (Exception e) {  
            e.printStackTrace();  
        }  
    }  
    public static void mergeWavFiles(File[] wavFiles, File outputFile) throws UnsupportedAudioFileException, IOException, LineUnavailableException {  
        AudioInputStream[] audioStreams = new AudioInputStream[wavFiles.length];  
        // 读取所有WAV文件到AudioInputStream  
        for (int i = 0; i < wavFiles.length; i++) {  
            audioStreams[i] = AudioSystem.getAudioInputStream(wavFiles[i]);  
        }  
        // 验证所有文件的音频格式是否相同  
        AudioFormat targetFormat = audioStreams[0].getFormat();  
        for (int i = 1; i < audioStreams.length; i++) {  
            if (!audioStreams[i].getFormat().equals(targetFormat)) {  
                throw new IllegalArgumentException("All input files must have the same format.");  
            }  
        }  
        // 创建一个SequenceInputStream来合并所有的AudioInputStream  
        SequenceInputStream mergedStream = new SequenceInputStream(new Enumeration<AudioInputStream>() {  
            int index = 0;  
            @Override  
            public boolean hasMoreElements() {  
                return index < audioStreams.length;  
            }  
            @Override  
            public AudioInputStream nextElement() {  
                if (index >= audioStreams.length) {  
                    throw new NoSuchElementException();  
                }  
                return audioStreams[index++];  
            }  
        });  
        // 写入合并后的音频到文件  
        try (AudioSystem.write(mergedStream, AudioFileFormat.Type.WAVE, outputFile)) {  
            // 写入操作在try-with-resources块中自动完成  
        }  
        // 关闭所有的AudioInputStream  
        for (AudioInputStream stream : audioStreams) {  
            stream.close();  
        }  
    }  
}