我正在集成 amadeus 航班搜索 api，但在使用 access_token 時(shí)出現(xiàn)錯(cuò)誤。我猜問(wèn)題出在檢索訪問(wèn)令牌？{ "errors": [ { "code": "38191", "title": "Invalid HTTP header", "detail": "Missing or invalid format for mandatory Authorization header", "status": "401" } ] }我需要獲取從出發(fā)地到目的地的所有航班及其價(jià)格詳細(xì)信息。$curls = curl_init();curl_setopt($curls, CURLOPT_URL, 'https://test.api.amadeus.com/v1/security/oauth2/token'); curl_setopt($curls, CURLOPT_POST, true);curl_setopt($curls, CURLOPT_POSTFIELDS, "grant_type=client_credentials&client_id=$secretid&client_secret=$secretkey");curl_setopt($curls, CURLOPT_HTTPHEADER, array('Content-Type: application/x-www-form-urlencoded'));$token = curl_exec($curls);$data = json_decode($token,true);curl_setopt($curls, CURLOPT_URL, 'https://test.api.amadeus.com/v2/shopping/flight-offers?originLocationCode=SYD&destinationLocationCode=BKK&departureDate=2020-10-01&returnDate=2020-08-05&adults=2&includedAirlineCodes=TG&max=3');curl_setopt($curls, CURLOPT_HTTPHEADER, array('Authorization: Bearer' .$data['access_token']));$result = curl_exec($curls);    if (curl_errno($curls)) {        echo 'Error:' . curl_error($curls);    }//print_r ($result);curl_close ($curls);