GoogleSheet API 错误：FetchError：对 https://www.googleapis.com/oauth2/v4/token 的请求失败，原因：getaddrinfo ENOTFOUND 808

Question

我正在尝试访问 google sheet api，但首先我尝试使用以下代码生成访问令牌。

const { google } = require("googleapis");

getAccessToken = () => {
  return new Promise(function(resolve, reject) {
   const key = require('./credentials.json');
   const jwtClient = new google.auth.JWT(
    key.client_email,
    null,
    key.private_key,
    "https://www.googleapis.com/auth/spreadsheets",
    null
   );
   jwtClient.authorize(function(err, tokens) {
    if (err) {
     reject(err);
     return;
    }
    console.log("token===",tokens.access_token);
    resolve(tokens.access_token);
   });
  });
 };

getAccessToken();

但未能在 jwtClient.authorize() 授权 并得到如下错误：

C:\Google API\GoogleSheet UsingJWT\GoogleSheet UsingJWT>node index.js
(node:16820) UnhandledPromiseRejectionWarning: FetchError: request to https://www.googleapis.com/oauth2/v4/token failed, reason: getaddrinfo ENOTFOUND 808
    at ClientRequest.<anonymous> (C:\Google API\GoogleSheet UsingJWT\GoogleSheet UsingJWT\node_modules\node-fetch\lib\index.js:1461:11)
    at ClientRequest.emit (events.js:314:20)
    at onerror (C:\Google API\GoogleSheet UsingJWT\GoogleSheet UsingJWT\node_modules\agent-base\dist\src\index.js:117:21)
    at callbackError (C:\Google API\GoogleSheet UsingJWT\GoogleSheet UsingJWT\node_modules\agent-base\dist\src\index.js:136:17)
    at processTicksAndRejections (internal/process/task_queues.js:97:5)
(node:16820) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:16820) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

我也没有使用任何代理。我无法理解实际问题。

谁能帮帮我？

Answer 1

我了解到您想为您的 Sheets API Node.js 脚本生成一个OAuth 2.0 token flow，但您收到一个错误作为响应。该错误消息描述了此问题如何源自未处理的承诺。要解决这种情况，您应该使用handled promises。一种方法是使用以下示例：

const fs = require('fs');
const readline = require('readline');
const {
  google
} = require('googleapis');

const SCOPES = ['https://www.googleapis.com/auth/spreadsheets'];
const TOKEN_PATH = 'token.json';

fs.readFile('credentials.json', (err, content) => {
  if (err) return console.log('Error loading client secret file:', err);
  authorize(JSON.parse(content), myFunction);
});

function authorize(credentials, callback) {
  const {
    client_secret,
    client_id,
    redirect_uris
  } = credentials.installed;
  const oAuth2Client = new google.auth.OAuth2(
    client_id, client_secret, redirect_uris[0]);

  fs.readFile(TOKEN_PATH, (err, token) => {
    if (err) return getNewToken(oAuth2Client, callback);
    oAuth2Client.setCredentials(JSON.parse(token));
    callback(oAuth2Client);
  });
}

function getNewToken(oAuth2Client, callback) {
  const authUrl = oAuth2Client.generateAuthUrl({
    access_type: 'offline',
    scope: SCOPES,
  });
  console.log('Authorize this app by visiting this url:', authUrl);
  const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
  });
  rl.question('Enter the code from that page here: ', (code) => {
    rl.close();
    oAuth2Client.getToken(code, (err, token) => {
      if (err) return console.error(
        'Error while trying to retrieve access token', err);
      oAuth2Client.setCredentials(token);
      fs.writeFile(TOKEN_PATH, JSON.stringify(token), (err) => {
        if (err) return console.error(err);
        console.log('Token stored to', TOKEN_PATH);
      });
      callback(oAuth2Client);
    });
  });
}

function myFunction(auth) {
  // YOUR CODE HERE
}

该脚本将达到您所描述的目标，您只需记住更改scope（如果需要）并更新myFunction。如果您需要有关此方法的帮助，请随时发表评论。