node js api example 在 コバにゃんチャンネル Youtube 的精選貼文
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node js api example 在 Node.js Quickstart | YouTube Data API | Google Developers 的推薦與評價
Complete the steps described in the rest of this page, and in about five minutes
you'll have a simple Node.js command-line application that makes requests to the
YouTube Data API.
channel resourcefor the GoogleDevelopers YouTube channel and prints some basic information from
that resource.Prerequisites
To run this quickstart, you'll need:
Node.js installed.
The npm package management tool (comes with
Node.js).
Access to the internet and a web browser.
A Google account.
Step 1: Turn on the YouTube Data API
Use
this wizard
to create or select a project in the Google Developers Console and
automatically turn on the API. Click Continue, then
Go to credentials.
On the Create credentials page, click the
Cancel button.
At the top of the page, select the OAuth consent screen tab.
Select an Email address, enter a Product name if not
already set, and click the Save button.
Select the Credentials tab, click the Create credentials
button and select OAuth client ID.
Select the application type Other, enter the name
"YouTube Data API Quickstart", and click the Create button.
Click OK to dismiss the resulting dialog.
Click the
(Download JSON) button to the right of the client ID.
Move the downloaded file to your working directory and rename it
client_secret.json.
Step 2: Install the client library
Run the following commands to install the libraries using npm:
Step 3: Set up the sample
npm install googleapis --save
npm install google-auth-library --save
Create a file named quickstart.js in your working directory and copy in
the following code:
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);
}
});
}
Step 4: Run the sample
Run the sample using the following command:
node quickstart.js
The first time you run the sample, it will prompt you to authorize access:
Browse to the provided URL in your web browser.
If you are not already logged into your Google account, you will be
prompted to log in. If you are logged into multiple Google accounts, you
will be asked to select one account to use for the authorization.
Click the Accept button.
Copy the code you're given, paste it into the command-line prompt, and press
Enter.
It worked!
Great! Check out the further reading section below to learn more.
I got an error
Bummer.
Thanks for letting us know and we'll work to fix this quickstart.
Authorization information is stored on the file system, so subsequent
executions will not prompt for authorization.
The authorization flow in this example is designed for a command line
application. For information on how to perform authorization in a web
application that uses the YouTube Data API, see
Using OAuth 2.0 for Web Server Applications.
For information on how to perform authorization in other contexts, see the
Authorizing and Authenticating
section of the library's README.
Further reading
Google Developers Console help documentation
Google APIs Client for Node.js documentation YouTube Data API reference documentation
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node js api example 在 zowe/sample-node-api - GitHub 的推薦與評價
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