如何在Node.js中发现Google OAuth2中的API

Question

I've got a problem with .discover method in Node.js. I've got such a piece of code:

googleapis.discover('oauth2', 'v2').execute(function(err, client){
    if(!err)
        callback(client);
});

And it throws error: TypeError: Object # has no method 'discover' But in all tutorials there is such a method mentioned. Does anyone know what's wrong?

Answer 1

I got the same error. I think they updated the googleapis client for Node.

Try follow the new syntax or use older version:

var google = require('googleapis');
var OAuth2 = google.auth.OAuth2;
var oauth2Client = new OAuth2(CLIENT_ID, CLIENT_SECRET, REDIRECT_URL);
var drive = google.drive({ version: 'v2', auth: oauth2Client });

Answer 2

I got the same error. But after looking around for a few hours. I came across this question and realized they might have changed the API and haven't updated the official documentation.

I was also trying this piece of code from this link ( https://developers.google.com/drive/web/quickstart/quickstart-nodejs )

 var googleapis = require('googleapis'), readline = require('readline'); var CLIENT_ID = 'YOUR CLIENT ID HERE', CLIENT_SECRET = 'YOUR CLIENT SECRET HERE', REDIRECT_URL = 'YOUR REDIRECT URL HERE', SCOPE = 'https://www.googleapis.com/auth/drive.file'; var rl = readline.createInterface({ input: process.stdin, output: process.stdout }); var auth = new googleapis.OAuth2Client(CLIENT_ID, CLIENT_SECRET, REDIRECT_URL); googleapis.discover('drive', 'v2').execute(function(err, client) { var url = auth.generateAuthUrl({ scope: SCOPE }); var getAccessToken = function(code) { auth.getToken(code, function(err, tokens) { if (err) { console.log('Error while trying to retrieve access token', err); return; } auth.credentials = tokens; upload(); }); }; var upload = function() { client.drive.files .insert({ title: 'My Document', mimeType: 'text/plain' }) .withMedia('text/plain', 'Hello World!') .withAuthClient(auth).execute(console.log); }; console.log('Visit the url: ', url); rl.question('Enter the code here:', getAccessToken); }); 

After trying for hours and hours. I changed my quickstart.js to this after looking at some other docs/tutorials on the internet.

 var googleapis = require('googleapis'); var OAuth2 = googleapis.auth.OAuth2; var readline = require('readline'); var CLIENT_ID = 'YOUR CLIENT ID HERE', CLIENT_SECRET = 'YOUR CLIENT SECRET HERE', REDIRECT_URL = 'YOUR REDIRECT URL HERE', SCOPE = 'https://www.googleapis.com/auth/drive.file'; var rl = readline.createInterface({ input: process.stdin, output: process.stdout }); var oauth2Client = new OAuth2(CLIENT_ID, CLIENT_SECRET, REDIRECT_URL); var drive = googleapis.drive({ version: 'v2', auth: oauth2Client }); var execute = function(err, client) { var url = oauth2Client.generateAuthUrl({ scope: SCOPE }); var getAccessToken = function(code) { oauth2Client.getToken(code, function(err, tokens) { if (err) { console.log('Error while trying to retrieve access token', err); return; } oauth2Client.credentials = tokens; upload(); }); }; var upload = function() { console.log(client) client.drive.files .insert({ title: 'My Document', mimeType: 'text/plain' }) .withMedia('text/plain', 'Hello World!') .withAuthClient(oauth2Client).execute(console.log); }; console.log('Visit the url: ', url); rl.question('Enter the code here:', getAccessToken); }; execute(); 

It started working but although I got it to output the URL to go to, I get an error after pasting the authorization code from the URL. The Client object in the upload function is undefined so I get an type error saying "cannot read property 'drive' of undefined". If someone knows the problem, please do let me know. I am also just learning NodeJS.