在flask中自定义响应数据的格式。
目录结构：

 ├── demoflask.py
 ├── main
 │   ├── __init__.py
 │   ├── errors.py

errors.py中分别定义处理响应和异常的函数generate_response、my_abort

# coding:utf-8

from flask_restful import abort


class ResponseCode:
    SUCCESS = 200
    WRONG_PARAM = 400
    MESSAGE = '处理成功！'


def generate_response(data=None, message=ResponseCode.MESSAGE, status=ResponseCode.SUCCESS):
    return {
        'message': message,
        'status': status,
        'data': data
    }


def my_abort(http_status_code, *args, **kwargs):
    if http_status_code == 400:
        # 重定义400返回参数
        abort(400, **generate_response(data=[kwargs.get('message')], message='参数错误！', status=http_status_code))

    abort(http_status_code)

再在demoflask.py中注册restful的异常处理

import flask_restful
import os
from flask_restful import request
from werkzeug.datastructures import FileStorage
from flask import Flask
from flask_restful import Resource, Api, reqparse

from main.errors import my_abort, generate_response

app = Flask(__name__)
api = Api(app=app)

ddir = os.getcwd()

# 自定义错误
flask_restful.abort = my_abort


class UserInfos(Resource):
    def __init__(self):
        self.parser = reqparse.RequestParser(bundle_errors=True)
        self.parser.add_argument('name', type=str, required=True, help='缺少该参数')
        self.parser.add_argument('email', type=str, required=True, help='缺少该参数')
        self.parser.add_argument('address', type=str, required=True, help='缺少该参数')

    def post(self):
        self.parser.parse_args()
        print('OK')
        return generate_response()


#
# DataApi
#
class DataApi(Resource):
    """
    数据接口
    """

    def __init__(self):
        self.parser = reqparse.RequestParser()
        self.parser.add_argument('file', required=True, type=FileStorage, help='csv file', location='files')

    def post(self):
        file = request.files['file']
        print(file.name, file.mimetype, file.stream)
        file.save('test.png')

        return generate_response()


api.add_resource(DataApi, '/data')
api.add_resource(UserInfos, '/user')


if __name__ == '__main__':
    app.run(debug=True)

正常数据：

ok

在调用/user接口时，如果是400错误，则会按照我们自定义的方式返回响应数据。

400