expressjsHow can I implement authorization in an Express.js application?
Authorization in an Express.js application can be implemented by using the Express.js middleware Passport.js. Passport.js provides a simple way to implement authentication and authorization in an Express.js application.
Below is an example of how to use Passport.js in an Express.js application:
const passport = require('passport');
const express = require('express');
const app = express();
// Initialize Passport
app.use(passport.initialize());
// Set up a route to handle authentication
app.get('/auth/google', passport.authenticate('google', {
scope: ['profile', 'email']
}));
// Set up a route to handle the callback
app.get('/auth/google/callback', passport.authenticate('google', {
successRedirect: '/',
failureRedirect: '/login'
}));
In the example code above:
- The
passport
module is imported. - The
passport.initialize()
middleware is used to initialize Passport. - The
passport.authenticate()
middleware is used to authenticate the user with the Google OAuth2 service. - The
successRedirect
andfailureRedirect
options are used to redirect the user to the appropriate page after authentication.
For more information about using Passport.js in an Express.js application, see the Passport.js documentation.
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