尝试获取用户 Youtube 频道时出现权限不足错误

Question

我已经针对 Youtube 帐户进行了身份验证并成功获得了访问令牌。现在我想使用下面的代码获取用户的 Youtube 频道：

        async fetchYoutubeChannels() {
        let accessToken = ....;
        const authCredentials = accessToken;
        const oauth2Client = initOAuth2Client(); //Oauth2 Client initialized at the top with secret, redirect url and and client id
        oauth2Client.setCredentials(authCredentials);
        oauth2Client.on('tokens', async (tokens) => {
            if (tokens.refresh_token) {
           //Save new token
            }
        });
        let service = google.youtube('v3');
        service.channels.list({
            auth: oauth2Client,
            part: 'snippet,contentDetails,statistics',
        }, function (err, response) {
            if (err) {
                console.log('The Youtube API returned an error: ' + err);
                return;
            }
            let channels = response.data;
            console.log(`Retrieved Channels = ${JSON.stringify(channels, null, 2)}`);
        });
    }

但我一直收到的是这条错误消息：

The Youtube API returned an error: Error: Insufficient Permission

我错过了什么？

如有任何想法，我们将不胜感激。 谢谢。

Answer 1

Error: Insufficient Permission

表示用户已授权您的应用程序，但他们尚未授予您访问此方法所需的权限。

我假设您正在关注 quickstart nodejs 而只是忽略了一些代码。

注意获取通道方法如何传递作为授权的一部分创建的 auth 参数。您似乎试图通过设置访问令牌来手动创建它。您应该让代码创建访问令牌，因为它将在适当的范围内创建。

var fs = require('fs');
var readline = require('readline');
var {google} = require('googleapis');
var OAuth2 = google.auth.OAuth2;

// If modifying these scopes, delete your previously saved credentials
// at ~/.credentials/youtube-nodejs-quickstart.json
var SCOPES = ['https://www.googleapis.com/auth/youtube.readonly'];
var TOKEN_DIR = (process.env.HOME || process.env.HOMEPATH ||
    process.env.USERPROFILE) + '/.credentials/';
var TOKEN_PATH = TOKEN_DIR + 'youtube-nodejs-quickstart.json';

// Load client secrets from a local file.
fs.readFile('client_secret.json', function processClientSecrets(err, content) {
  if (err) {
    console.log('Error loading client secret file: ' + err);
    return;
  }
  // Authorize a client with the loaded credentials, then call the YouTube API.
  authorize(JSON.parse(content), getChannel);
});

/**
 * Create an OAuth2 client with the given credentials, and then execute the
 * given callback function.
 *
 * @param {Object} credentials The authorization client credentials.
 * @param {function} callback The callback to call with the authorized client.
 */
function authorize(credentials, callback) {
  var clientSecret = credentials.installed.client_secret;
  var clientId = credentials.installed.client_id;
  var redirectUrl = credentials.installed.redirect_uris[0];
  var oauth2Client = new OAuth2(clientId, clientSecret, redirectUrl);

  // Check if we have previously stored a token.
  fs.readFile(TOKEN_PATH, function(err, token) {
    if (err) {
      getNewToken(oauth2Client, callback);
    } else {
      oauth2Client.credentials = JSON.parse(token);
      callback(oauth2Client);
    }
  });
}

/**
 * Get and store new token after prompting for user authorization, and then
 * execute the given callback with the authorized OAuth2 client.
 *
 * @param {google.auth.OAuth2} oauth2Client The OAuth2 client to get token for.
 * @param {getEventsCallback} callback The callback to call with the authorized
 *     client.
 */
function getNewToken(oauth2Client, callback) {
  var authUrl = oauth2Client.generateAuthUrl({
    access_type: 'offline',
    scope: SCOPES
  });
  console.log('Authorize this app by visiting this url: ', authUrl);
  var rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
  });
  rl.question('Enter the code from that page here: ', function(code) {
    rl.close();
    oauth2Client.getToken(code, function(err, token) {
      if (err) {
        console.log('Error while trying to retrieve access token', err);
        return;
      }
      oauth2Client.credentials = token;
      storeToken(token);
      callback(oauth2Client);
    });
  });
}

/**
 * Store token to disk be used in later program executions.
 *
 * @param {Object} token The token to store to disk.
 */
function storeToken(token) {
  try {
    fs.mkdirSync(TOKEN_DIR);
  } catch (err) {
    if (err.code != 'EEXIST') {
      throw err;
    }
  }
  fs.writeFile(TOKEN_PATH, JSON.stringify(token), (err) => {
    if (err) throw err;
    console.log('Token stored to ' + TOKEN_PATH);
  });
}

/**
 * Lists the names and IDs of up to 10 files.
 *
 * @param {google.auth.OAuth2} auth An authorized OAuth2 client.
 */
function getChannel(auth) {
  var service = google.youtube('v3');
  service.channels.list({
    auth: auth,
    part: 'snippet,contentDetails,statistics',
    forUsername: 'GoogleDevelopers'
  }, function(err, response) {
    if (err) {
      console.log('The API returned an error: ' + err);
      return;
    }
    var channels = response.data.items;
    if (channels.length == 0) {
      console.log('No channel found.');
    } else {
      console.log('This channel\'s ID is %s. Its title is \'%s\', and ' +
                  'it has %s views.',
                  channels[0].id,
                  channels[0].snippet.title,
                  channels[0].statistics.viewCount);
    }
  });
}

来自评论

How do I get the username of a youtube account. is it the user display name retrieved during the oauth2 process?

YouTube api 是基于频道而不是基于用户的。您被授予访问用户频道的权限。从技术上讲，用户自己 activites 可能会给你一些关于用户授权你访问哪个频道的信息，但我还没有真正尝试过。

Error: No filter selected. Expected one of: mySubscribers, id, categoryId, mine, managedByMe, forUsername

Channels: list 要求您发送过滤器。检查部分 Filters (specify exactly one of the following parameters)