我在尝试使用App Scripts调用Gemini API时，持续收到’InvalidSignature’错误消息。我使用的代码是根据他们文档中关于私有API调用的Python代码转换而来的。

代码如下：

function createHeaders(payload) {  var geminiApiKey = API_KEY  var geminiApiSecret = SECRET_KEY  var encodedApiSecret = Utilities.newBlob(geminiApiSecret, 'UTF-8').getBytes()  var payloadNonce = new Date().getTime() / 1000;  payload["nonce"] = Math.round(payloadNonce);  var encodedPayload = Utilities.newBlob(JSON.stringify(payload), 'UTF-8').getBytes()  var b64 = Utilities.base64Encode(encodedPayload) //string  var signature = Utilities.computeHmacSignature(    Utilities.MacAlgorithm.HMAC_SHA_384,    b64,    geminiApiSecretAuditor   ) //bytes  return {    "Content-Type": "text/plain",    "X-GEMINI-APIKEY": geminiApiKeyAuditor,    "X-GEMINI-PAYLOAD": b64,    "X-GEMINI-SIGNATURE": Utilities.base64Encode(signature), //string    "Cache-Control": "no-cache"  };}function fetchGeminiData() {  var baseUrl = "https://api.gemini.com";  var url = baseUrl + "/v1/mytrades";  var payload = {    "request": "/v1/mytrades"  };  var headers = createHeaders(payload);  var options = {    "method": "post",    "headers": headers,  };  var response = UrlFetchApp.fetch(url, options);  var responseData = response.getContentText();  var jsonResponse = JSON.parse(responseData);  Logger.log(jsonResponse);}

错误消息如下：

Exception: Request failed for https://api.gemini.com returned code 400. Truncated server response: {"result":"error","reason":"InvalidSignature","message":"InvalidSignature"}

我已经确保了对象类型符合每个方法的预期，但仍然收到上述错误消息。我遗漏了什么？

回答：

我认为您的目标如下。

• 您希望将以下Python脚本转换为Google Apps Script。 参考

  import requestsimport jsonimport base64import hmacimport hashlibimport datetime, timeurl = "https://api.gemini.com/v1/mytrades"gemini_api_key = "mykey"gemini_api_secret = "1234abcd".encode()t = datetime.datetime.now()payload_nonce = time.time()payload =  {"request": "/v1/mytrades", "nonce": payload_nonce}encoded_payload = json.dumps(payload).encode()b64 = base64.b64encode(encoded_payload)signature = hmac.new(gemini_api_secret, b64, hashlib.sha384).hexdigest()request_headers = {    'Content-Type': "text/plain",    'Content-Length': "0",    'X-GEMINI-APIKEY': gemini_api_key,    'X-GEMINI-PAYLOAD': b64,    'X-GEMINI-SIGNATURE': signature,    'Cache-Control': "no-cache"    }response = requests.post(url, headers=request_headers)my_trades = response.json()print(my_trades)

在这种情况下，以下示例脚本如何？

示例脚本：

function myFunction() {  API_KEY = "mykey"; // 请设置您的API密钥。  SECRET_KEY = "1234abcd"; // 请设置您的密钥。  var gemini_api_key = API_KEY;  var gemini_api_secret = SECRET_KEY;  var baseUrl = "https://api.gemini.com";  var url = baseUrl + "/v1/mytrades";  var nonce = (new Date().getTime() / 1000).toString();  var payload = `{"request": "/v1/mytrades", "nonce": "${nonce}"}`;  var b64 = Utilities.base64Encode(payload);  var signature = Utilities.computeHmacSignature(Utilities.MacAlgorithm.HMAC_SHA_384, b64, gemini_api_secret).map(b => ('0' + (b & 0xFF).toString(16)).slice(-2)).join('');  var request_headers = {    'Content-Type': "text/plain",    'X-GEMINI-APIKEY': gemini_api_key,    'X-GEMINI-PAYLOAD': b64,    'X-GEMINI-SIGNATURE': signature,    'Cache-Control': "no-cache"  };  var options = { method: "post", headers: request_headers };  var response = UrlFetchApp.fetch(url, options);  var responseData = response.getContentText();  var jsonResponse = JSON.parse(responseData);  console.log(jsonResponse);}

注意事项：

• 我认为这个示例脚本的请求与上述Python脚本相同。但遗憾的是，我无法测试此脚本。因此，如果发生错误，请再次确认您的API密钥、密钥和URL。

参考资料：

• fetch(url, params)