Flask-Restful quickly builds the technical principles of Web API (Research on the Technical Principles of Fast Building Web API with Flask-RESTFUL)

Flask-Restful is a Python-based lightweight web framework that is used to quickly build a web API interface.It uses the RESTFUL architecture style, allowing developers to easily design, develop and test the API interface. First, we need to use the Flask framework to build a basic web application.Flask is a miniature framework with flexible and concise characteristics.We can use PIP tools to install Flask and Flask-Restful. After the installation is completed, we need to create a Flask application object and define the API interface.In Flask-Restful, the API interface is realized by creating a class inherited from the Flask_restful.Resource class.Each class represents a specific API resources, such as users, articles or comments. Next, we need to use the decoration to bind the interface to the URL.Flask provides@app.route decorations to achieve route function.By specifying the URL path and request method in the decoration, we can bind the specific interface to a specific URL. In the API interface, we can define the processing function of various HTTP request methods.For example, the get method is used to obtain resources, the post method is used to create resources, the PUT method is used to update resources, and the delete method is used to delete resources.We can use methods in the class to process these different requests, such as get, post, put, and delete. For different interfaces, we can define different HTTP request methods to process functions.In the processing function, we can use the request object to obtain the request parameter and use the database operation to read or modify the data.For example, we can use Request.args to obtain query parameters and use request.get_json to obtain JSON data in the request body. In addition, Flask-Restful also provides some additional functions, such as abnormal processing, response objects and field verification.We can use the ABORT function to capture and process abnormalities, and use the Marshal function to define the response data format.You can also use the ReqParse module to verify and analyze the request parameters. Finally, we need to start Flask applications and monitor specific host addresses and ports.By calling Flask's Run method, we can start a debug server locally for testing and development. In general, Flask-Restful provides many convenient functions and tools, allowing developers to quickly build an efficient and reliable Web API interface.During the development process, we need to reasonably design the URL structure, processing requests and response, abnormal processing and data verification in order to provide high -quality API services.