Watson 文本转语音不产生音频输出

Watson Text to speech not producing Audio output

这是我的 java 代码:

public static void main(String[] args) {

    TextToSpeech textService = new TextToSpeech(IBM_WATSON_USERNAME, IBM_WATSON_PASSWORD);

    //String voice = "en-US_AllisonVoice";
    String text = "This is Just awesome And i am going to experience the effect";
    //String format = "audio/mp3";

    try {
        InputStream in = textService.synthesize(text, Voice.EN_ALLISON, AudioFormat.OGG_VORBIS)
                .execute();
        System.out.println(in.available());

    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

}

当我在 eclipse 中执行代码时,我得到:

Dec 12, 2017 3:05:08 PM okhttp3.internal.platform.Platform log
INFO: --> POST https://stream.watsonplatform.net/text-to-speech/api/v1/synthesize?voice=en-US_AllisonVoice&accept=audio/ogg;%20codecs%3Dvorbis http/1.1 (71-byte body)
Dec 12, 2017 3:05:09 PM okhttp3.internal.platform.Platform log
INFO: <-- 200 OK https://stream.watsonplatform.net/text-to-speech/api/v1/synthesize?voice=en-US_AllisonVoice&accept=audio/ogg;%20codecs%3Dvorbis (588ms, unknown-length body)

in.available() 的输出是:0

为什么我收不到任何音频?根据 POST 请求,我可以看到我的文本没有得到 POSTED。我缺少什么?

InputStream 中的 available() 方法将始终 returns 0,因为它取决于 InputStream 的实现。请参阅 InputStream Javadoc。

调用 synthesize() 时获得的 InputStream 是 okHttp 库中的 byteStream()。

您需要从 InputStream 读取到文件或其他地方。 这是可用于此的代码片段:

inputStream = textToSpeech.synthesize(/* parameters*/).execute();
outputStream = new FileOutputStream(new File("audio.ogg"));
int read = 0;
byte[] bytes = new byte[1024];
while ((read = inputStream.read(bytes)) != -1) {
  outputStream.write(bytes, 0, read);
}
System.out.println("Done!");

注意: 上面的代码片段没有任何 try{}catch 并且它不会关闭流。我会把它留给你 =)