java怎么实现语音播报

在Java中实现语音播报，可以使用Java的内置库或者第三方库。这里我将介绍两种方法：使用Java自带的javax.sound.sampled库和使用开源库JSyn。

方法1：使用Java自带的javax.sound.sampled库

import javax.sound.sampled.*;
import java.io.File;
import java.io.IOException;

public class TextToSpeech {
    public static void main(String[] args) {
        String text = "你好，这是一个语音播报示例。";
        int bufferSize = 4096;
        boolean isPlaying = true;

        try {
            File audioFile = new File("output.wav");
            playText(text, audioFile, bufferSize);
        } catch (UnsupportedAudioFileException | IOException | LineUnavailableException e) {
            e.printStackTrace();
        }
    }

    public static void playText(String text, File audioFile, int bufferSize) throws UnsupportedAudioFileException, IOException, LineUnavailableException {
        AudioFormat format = new AudioFormat(16000, 16, 2, true, true);
        DataLine.Info info = new DataLine.Info(Clip.class, format);
        Clip clip = (Clip) AudioSystem.getLine(info);
        clip.open(null);

        byte[] buffer = new byte[bufferSize];
        TextToSpeech tts = new TextToSpeech(Locale.CHINA);
        tts.setVoiceName("Narrator");
        tts.speak(text, TextToSpeech.QUEUE_FLUSH, null);

        Thread speakerThread = new Thread(() -> {
            try {
                while (isPlaying) {
                    int bytesRead = clip.read(buffer, 0, buffer.length);
                    if (bytesRead > 0) {
                        AudioInputStream audioStream = new AudioInputStream(new ByteArrayInputStream(buffer, 0, bytesRead));
                        AudioSystem.write(audioStream, AudioFileFormat.Type.WAVE, audioFile);
                    } else {
                        break;
                    }
                }
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                clip.close();
            }
        });

        speakerThread.start();
    }
}

方法2：使用开源库JSyn

首先，你需要下载并添加JSyn库到你的项目中。你可以从这里下载它：https://www.softsynth.com/jsyn/

然后，你可以使用以下代码实现语音播报：

import com.softsynth.jsyn.*;
import com.softsynth.util.DialogUtils;

public class TextToSpeech {
    public static void main(String[] args) {
        String text = "你好，这是一个语音播报示例。";
        String language = "zh";

        try {
            speakText(text, language);
        } catch (Exception e) {
            DialogUtils.showErrorDialog("错误", e.getMessage());
        }
    }

    public static void speakText(String text, String language) throws SynthesizerException {
        Synthesizer synthesizer = JSyn.createSynthesizer();
        synthesizer.open();

        Voice voice = synthesizer.createVoice(language);
        if (voice == null) {
            throw new SynthesizerException("无法找到指定的语音");
        }

        voice.allocate();
        voice.setRate(voice.getSampleRate() / 10); // 设置语速
        voice.setPitch(100); // 设置音高

        byte[] buffer = new byte[1024];
        int bytesRead;
        while ((bytesRead = synthesizer.read(buffer, 0, buffer.length)) > 0) {
            synthesizer.write(buffer, 0, bytesRead);
        }

        synthesizer.close();
    }
}

这两种方法都可以实现Java中的语音播报功能。你可以根据自己的需求选择合适的方法。