Python Flask中的jsonify_python jsonify

# -*- coding: utf-8 -*-
# @Time    : 2022/4/13 11:46 下午
# @Author  : renwoxing
# @File    : flask_restful_demo.py
# @Software: PyCharm
 
from flask import Flask, jsonify, abort, request
 
app = Flask(__name__)
books = [
    {
        'id': 1,
        'name': u'大学',
        'author': '张三',
        'price': 98
    },
    {
        'id': 2,
        'name': u'骆驼祥子',
        'author': '老舍',
        'price': 98
    }
]
 
@app.route("/bookstore/api/v1/books", methods=['GET'])
def get_books():
    return jsonify({'books': books})
 
if __name__ == '__main__':
    app.run(host="0.0.0.0", port="8000", debug=True)

1. 根据函数说明：该函数在dumps函数上做了封装，变得更易用；
2. 实际调用过程：
   jsonify调用下面的函数：

current_app.response_class(
        dumps(data, indent=indent, separators=separators) + "\n",
        mimetype=current_app.config["JSONIFY_MIMETYPE"],
    )

上面的dumps实际上是调用了itsdangerous 库json.dumps函数而已：

from itsdangerous import json as _json
 
    _dump_arg_defaults(kwargs, app=app)
    encoding = kwargs.pop("encoding", None)
    rv = _json.dumps(obj, **kwargs)
    if encoding is not None and isinstance(rv, text_type):
        rv = rv.encode(encoding)
    return rv