带有gmail api的node js，API返回错误：错误：未授权客户端

Posted 2023-03-08

【中文标题】带有gmail api的node js，API返回错误：错误：未授权客户端

【英文标题】：node js with gmail api, The API returned an error: Error: unauthorized_client

【发布时间】：2016-05-14 02:52:28

【问题描述】：

编辑： 这段代码发生了错误：

   var gmail = google.gmail('v1');
      gmail.users.labels.list(
        auth: auth,
        userId: 'me',
      , function(err, response) 
        if (err) 
          console.log('The API returned an error: ' + err);
          return;
        

我正在使用带有 Node js 的 gmail api。当我浏览他们的快速入门指南时，我不断收到此错误。

https://developers.google.com/gmail/api/quickstart/nodejs

 The API returned an error: Error: unauthorized_client

请记住，我使用我的电子邮件地址完成了快速入门，一切都很好。完全没有错误。我决定为测试目的创建一个虚拟电子邮件。我所做的唯一更改是step 1-g 切换出client_secret.json 文件以保存新的凭据和密钥。我尝试切换回旧文件，但错误仍然存​​在。

在页面底部的链接中提供了它的状态。

Authorization information is stored on the file system, so subsequent executions will not prompt for authorization. Would I have to clear or refresh the information? If so how can I do this?

如果有帮助，我将重新发布我的 quickstart.js 文件中的所有代码。

var fs = require('fs');
var readline = require('readline');
var google = require('googleapis');
var googleAuth = require('google-auth-library');

var SCOPES = ['https://www.googleapis.com/auth/gmail.readonly'];
var TOKEN_DIR = (process.env.HOME || process.env.HOMEPATH ||
    process.env.USERPROFILE) + '/.credentials/';
var TOKEN_PATH = TOKEN_DIR + 'gmail-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
  // Gmail API.
  authorize(JSON.parse(content), listLabels);
);

/**
 * 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 auth = new googleAuth();
  var oauth2Client = new auth.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));
  console.log('Token stored to ' + TOKEN_PATH);


/**
 * Lists the labels in the user's account.
 *
 * @param google.auth.OAuth2 auth An authorized OAuth2 client.
 */
function listLabels(auth) 
  var gmail = google.gmail('v1');
  gmail.users.labels.list(
    auth: auth,
    userId: 'me',
  , function(err, response) 
    if (err) 
      console.log('The API returned an error: ' + err);
      return;
    
    var labels = response.labels;
    if (labels.length == 0) 
      console.log('No labels found.');
     else 
      console.log('Labels:');
      for (var i = 0; i < labels.length; i++) 
        var label = labels[i];
        console.log('- %s', label.name);
      
    
  );

【参考方案1】：

我在TOKEN_PATH 上做了一个console.log，它给了我文件所在的路径。

我不得不删除文件

/Users/user/.credentials/gmail-nodejs-quickstart.json

这是我在 Mac 上找不到的隐藏文件夹。

【讨论】：

注意这个目录是在你的代码中定义的：var TOKEN_PATH = TOKEN_DIR + 'gmail-nodejs-quickstart.json';