How to implement dynamic voice playback based on SpringBoot and Vue
May 12, 2023 pm 07:13 PM
1. The background interface returns byte[]
1. Add the interface in the controller and return byte[]
Set produces = “application/octet-stream ”
Set the return type ResponseEntity
@PostMapping(value = "/v/voice", produces = "application/octet-stream")
public ResponseEntity<byte[]> voice(@RequestBody JSONObject param, HttpServletResponse response) throws IOException {
String text = param.getString("text");
// 以下代碼調(diào)用阿里云接口，把文字轉(zhuǎn)語音
byte[] voice = SpeechRestfulUtil.text2voice(text);
// 返回音頻byte[]
return ResponseEntity.ok().body(voice);
}This example is to call the Alibaba Cloud tts interface to convert text to speech
2. Add a parser in configureMessageConverters
ByteArrayHttpMessageConverter
@Override
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
MappingJackson2HttpMessageConverter jackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter(objectMapper());
converters.add(jackson2HttpMessageConverter);
converters.add(new ByteArrayHttpMessageConverter());
}2. Vue front-end call interface to play voice
Use axios call Backend interface, set responseType=blob
1) Get the browser playback control audioContext
2) Use FileReader to read the obtained byte[]
3) FileReader binding load event, play the voice after reading byte[] is completed
function doVoice(){
axios({
method:'post',
url:req.voice,
responseType:'blob',
data:{text:data.info} // 需要播放的文本
}).then(function (response) {
console.log(response);
if(response.status===200){
// 1）得到瀏覽器播放控件 audioContext
let audioContext = new (window.AudioContext || window.webkitAudioContext)();
let reader = new FileReader();
reader.onload = function(evt) {
if (evt.target.readyState === FileReader.DONE) {
// 3）FileReader綁定load事件，讀取byte[]完成后播放語音
audioContext.decodeAudioData(evt.target.result,
function(buffer) {
// 解碼成pcm流
let audioBufferSouceNode = audioContext.createBufferSource();
audioBufferSouceNode.buffer = buffer;
audioBufferSouceNode.connect(audioContext.destination);
audioBufferSouceNode.start(0);
}, function(e) {
console.log(e);
});
}
};
// 2）使用FileReader讀取得到的byte[]
reader.readAsArrayBuffer(response.data);
}
})
.catch(function (error) {
// handle error
console.log(error);
})
.finally(function () {
// always executed
});
}The above is the detailed content of How to implement dynamic voice playback based on SpringBoot and Vue. For more information, please follow other related articles on the PHP Chinese website!
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