How can I implement JWT security in a Flask RESTful API?

How can I implement JWT security in a Flask RESTful API?

To implement JWT security in a Flask RESTful API, you can use the Flask-JWT-Extended library. First, install it using pip.

What are the steps to set it up?

1. Install Flask-JWT-Extended. 2. Configure your Flask app. 3. Create a user model and authentication endpoint. 4. Protect your routes with JWT.

Can you show me a code example?

Sure! Here's a simple example:

from flask import Flask, jsonify, request
from flask_jwt_extended import JWTManager, create_access_token, jwt_required

app = Flask(__name__)
app.config['JWT_SECRET_KEY'] = 'your_secret_key'
jwt = JWTManager(app)

@app.route('/login', methods=['POST'])
def login():
    username = request.json.get('username')
    # Validate username and password
    access_token = create_access_token(identity=username)
    return jsonify(access_token=access_token)

@app.route('/protected', methods=['GET'])
@jwt_required()
def protected():
    return jsonify(message='This is a protected route')

This code sets up a login route and a protected route.

What should I do if I want to refresh the token?

You can implement a refresh token endpoint using create_refresh_token and jwt_refresh_token_required. This allows users to obtain a new access token without logging in again.