我正在嘗試像這樣訪問Spotify API令牌：$.ajax({  url: "https://accounts.spotify.com/api/token",  type: 'POST',  contentType: "application/json; charset=\"utf-8\"",  crossDomain: true,  data: {    grant_type: "authorization_code",    code: code,    redirect_uri: "http://www.bancadigital.com.br/spotifyteste/callback.html"  },  processData: false,  dataType: "json",  headers: {    Authorization: "Basic " + utf8_to_b64(key)  },  success: function( response ) {    alert(response.access_token);  },});但是該服務(wù)返回以下錯(cuò)誤：XMLHttpRequest無(wú)法加載https://accounts.spotify.com/api/token。所請(qǐng)求的資源上不存在“ Access-Control-Allow-Origin”標(biāo)頭。因此，不允許訪問來(lái)源“ http://www.bancadigital.com.br ”。有人知道我可以使用該服務(wù)嗎？