我已经下载了IVR for beginners tutorial并对其进行了一些修改,以提供俄语语音响应(java文件的编码为UTF-8)：

@Override
protected void doPost(HttpServletRequest servletRequest,HttpServletResponse servletResponse)
        throws IOException {
    VoiceResponse response = new VoiceResponse.Builder()
            .gather(new Gather.Builder()
                    .action("/menu/show")
                    .numDigits(1)
                    .build())
            .say(new Say.Builder("Привет")
                  .voice(Say.Voice.ALICE)
                  .language(Say.Language.RU_RU)
                  .build())
            .build();

    servletResponse.setContentType("text/xml");
    try {
        servletResponse.getWriter().write(response.toXml());
    } catch (TwiMLException e) {
        throw new RuntimeException(e);
    }
}

但是,当我拨打电话时,我会听到沉默.控制台的呼叫日志显示问号而不是西里尔字符.

希望能为您解决这个问题提供帮助.