Python Flask-Restful Development Real War
Python Flask-RESTFUL Development Real Combat
Python Flask-Restful is a Python-based web development framework that is used to build an efficient and easy-to be maintained RESTFUL API.This article will introduce how to use Python Flask-Restful for development, and provide relevant code examples and configuration descriptions.
1. Installation and configuration Flask-Restful
First, you need to install the Flask-Restful module.You can use the PIP command for installation:
pip install flask-restful
After the installation is completed, you can start creating the Flask-Restful project.Create a new Python file and import Flask and FLASK-RESTFUL modules:
python
from flask import Flask
from flask_restful import Api
Then, create a FLASK application and instantiated API object:
python
app = Flask(__name__)
api = Api(app)
2. Create resources
In Flask-Restful, the resource represents one of the endpoints in the API.You can handle different requests from the client by defining the resource class.
python
class HelloWorld(Resource):
def get(self):
return {'message': 'Hello, World!'}
def post(self):
return {'message': 'Received a POST request'}
In the above example, the HelloLoWorld class inherits the resource class of Flask-RESTFUL, and implements the get () and post () methods to handle the get and post requests.
3. Add resource routing
In order to allow the resource class to process the client's request, it needs to be mapped to the corresponding URL path.You can use Flask-Restful's `Add_Resource () method to add resource routing.
python
api.add_resource(HelloWorld, '/hello')
In the above example, the HELLOWORLD resource class is mapped to the '/Hello' path.
4. Run application
After completing the above steps, you can run Flask applications.Add the following code at the end of the application file:
python
if __name__ == '__main__':
app.run()
Now, you can start the FLASK server by running the application file:
python app.py
5. Test API
Flask-Restful automatically generates a set of default URL paths and the mapping relationship between HTTP methods.You can test your API with browser, command line tools (such as CURL) or HTTP client tools.
-GET request: Open the browser, enter http: // localhost: 5000/hello, and will return to `{'message': 'hello, world!'}`.
-POST request: You can use the Curl command to send the post request:
curl -X POST http://localhost:5000/hello
Return to `{'message': 'Received a Post Request'}`.
The above is the basic actual combat content developed using Python Flask-RESTFUL.You can add more HTTP methods and business logic to the resource category according to your actual needs.Flask-Restful provides other rich functions, such as request parameters analysis, certification and authorization, etc., and can also be configured and used as needed in actual development.
