尝试使用freetts生成2个tts文件时出现异常

Question

当我第二次尝试调用方法textToMp3()时，我得到了IllegalStateException。我试着只关闭播放器，我只试着结束它，正如你所看到的，它仍然不起作用。当我第一次调用这个方法，并且总是在第二次调用time.Do之后抛出excetion时，它总是起作用。你知道为什么吗？

public class TextToSpeech {
    static VoiceManager manager;
    static Voice voice;

    public TextToSpeech() {

        manager = VoiceManager.getInstance();

        Voice[] voices = new MbrolaVoiceDirectory().getVoices();

        voice = voices[0];
        assert voice != null;
        voice.allocate();

    }

    public File textToMp3(String text, String filename) throws IOException {
        File dir = new File("atis");
        if (!dir.exists()) dir.mkdir();

        SingleFileAudioPlayer player = new SingleFileAudioPlayer(dir.getName() + "\\"+ filename, AudioFileFormat.Type.WAVE);

        player.setVolume(100);

        voice.setAudioPlayer(player);
        voice.setRate(125);

        voice.speak(text);
        voice.deallocate();

        player.end();
        player.close();
        return new File(dir.getName() + "\\"+ filename);
    }
}

这里有个例外

Trouble while processing utterance java.lang.IllegalStateException: output queue closed
java.lang.IllegalStateException: output queue closed
    at com.sun.speech.freetts.OutputQueue.post(OutputQueue.java:53)
    at com.sun.speech.freetts.Voice.processUtterance(Voice.java:424)
    at com.sun.speech.freetts.Voice.speak(Voice.java:289)
    at com.sun.speech.freetts.Voice.speak(Voice.java:235)
    at LavaPlayer.TextToSpeech.textToMp3(TextToSpeech.java:42)
    at Commands.Atis.onGuildMessageReceived(Atis.java:179)
    at net.dv8tion.jda.api.hooks.ListenerAdapter.onEvent(ListenerAdapter.java:463)
    at net.dv8tion.jda.api.hooks.InterfacedEventManager.handle(InterfacedEventManager.java:96)
    at net.dv8tion.jda.internal.hooks.EventManagerProxy.handleInternally(EventManagerProxy.java:88)
    at net.dv8tion.jda.internal.hooks.EventManagerProxy.handle(EventManagerProxy.java:70)
    at net.dv8tion.jda.internal.JDAImpl.handleEvent(JDAImpl.java:158)
    at net.dv8tion.jda.internal.handle.MessageCreateHandler.handleInternally(MessageCreateHandler.java:97)
    at net.dv8tion.jda.internal.handle.SocketHandler.handle(SocketHandler.java:36)
    at net.dv8tion.jda.internal.requests.WebSocketClient.onDispatch(WebSocketClient.java:952)
    at net.dv8tion.jda.internal.requests.WebSocketClient.onEvent(WebSocketClient.java:839)
    at net.dv8tion.jda.internal.requests.WebSocketClient.handleEvent(WebSocketClient.java:817)
    at net.dv8tion.jda.internal.requests.WebSocketClient.onBinaryMessage(WebSocketClient.java:990)
    at com.neovisionaries.ws.client.ListenerManager.callOnBinaryMessage(ListenerManager.java:385)
    at com.neovisionaries.ws.client.ReadingThread.callOnBinaryMessage(ReadingThread.java:276)
    at com.neovisionaries.ws.client.ReadingThread.handleBinaryFrame(ReadingThread.java:996)
    at com.neovisionaries.ws.client.ReadingThread.handleFrame(ReadingThread.java:755)
    at com.neovisionaries.ws.client.ReadingThread.main(ReadingThread.java:108)
    at com.neovisionaries.ws.client.ReadingThread.runMain(ReadingThread.java:64)
    at com.neovisionaries.ws.client.WebSocketThread.run(WebSocketThread.java:45)

Answer 1

在不太了解您的库的用法的情况下，看起来您正在构造函数中设置一个voice变量，然后在textToMp3方法中调用voice.deallocate。这意味着如果您在同一个Java对象上调用textToMp3两次，它将尝试使用一个已释放的声音。

您还将voiceManager和voice存储为static类字段，但是您使用的代码似乎只有在它们是实例变量的情况下才能工作。您可能应该更改这一点，以便它们被称为实例字段，这样您就可以构造一个类并在每次访问它。