我正在从 Spotify API 获取数据，但运行一段时间后它会标记错误并开始一遍又一

Question

我试图了解 Spotify API。这个小代码控制台记录了用户正在收听的歌曲的当前节拍信息。它工作正常，但在运行几秒钟后，它会记录一个错误，在该错误之后，它开始一遍又一遍地记录同一节拍的信息。有任何想法吗？这是我的代码，提前谢谢你！var spotifyApi, spotifyToken;var current, currentId, timeProgress, beatStart, beatsTotal;var dataArray = [];var beatsArray = [];var spotifyToken = 'token';spotifyApi = new SpotifyWebApi();spotifyApi.setAccessToken( spotifyToken );init();function init(){  onReceiveCurrent();}function onReceiveCurrent ( err, data ) {  if (err) {    console.error(err);    return;  }  spotifyApi.getMyCurrentPlaybackState({}, onReceiveCurrent );  currentId = data.item.id;  timeProgress = data.progress_ms;  spotifyApi.getAudioAnalysisForTrack(currentId, onReceiveAnalysisCallback);}function onReceiveAnalysisCallback ( err, data ) {  if (err) {    console.error(err);    return;  }  for (var i=0; i<data.beats.length; i++) {    beatsArray[i] = data.beats[i].start;  }  var found = beatsArray.find(function (element) {        return element >= timeProgress/1000;  });  var a = beatsArray.indexOf(found);  beatStart = data.beats[a];  console.log(beatStart);}这是错误：

Answer 1

您不小心在该方法中创建了一个无限循环onReceiveCurrent，该getMyCurrentPlaybackState方法调用的回调为onReceiveCurrent. 它一遍又一遍地调用自己，直到达到 Spotify 的限制并返回 429。

回调应该是一个单独的函数，如下所示：

function callSpotify () {

  spotifyApi.getMyCurrentPlaybackState({}, onReceiveStateCallback );

}

function onReceiveStateCallback(err, data) {

  if (err) {

    console.error(err);

    return;

  }

  currentId = data.item.id;

  timeProgress = data.progress_ms;

  spotifyApi.getAudioAnalysisForTrack(currentId, onReceiveAnalysisCallback);

}