JavaScript呼叫ajax傳送一個json

        $('#cc').click(function () {
            mdffilepath = {
                'name1': 'aaaa1','name2': 'aaaa2','name3': 'aaaa3','name4': 'aaaa4'//要傳送的字典，在JavaScript裡被定義為物件
            }; //傳輸資料
            $.ajax({
                type: 'POST',
                url: '/calc/read_inca_func',
                data: JSON.stringify(mdffilepath),//將物件打包成json的字串傳送，對應下面也要將字串解碼成字典
                contentType: 'application/json;charset=UTF-8',//編碼格式
                dataType: 'json',
                success: function (data) {
                    console.log(typeof(data["calc"]));//列印為字串
                    console.log(data["calc"]);//列印為物件object
                }
            })
        })
 

from flask import Flask,render_template, request, url_for, jsonify
import os
import json
import sys
import subprocess

app = Flask(__name__)//與下面的  app.run()對應
app.config['SECRET_KEY'] = "dfdfdffdad"//抄的，不知道幹嘛

@app.route('/')
def index():
    return render_template('index.html')

@app.route('/calc/read_inca_func', methods=['POST'])
def upload_file():
    a=request.get_data()//得到JavaScript傳送的字串流
    print(type(a))//bytes
    s1 = str(a, encoding='utf-8')//解碼為string
    print(type(s1))
    print(s1)
    user_dict1 = json.loads(s1)//將string變成dict
    for key in user_dict1.keys():
        print(key,user_dict1[key])
    user_dict = json.loads(a)//將bytes變成dict
    # info = eval(str(requests.post(url_now).content.decode()))//抄的，不知道什麼意思
    for key in user_dict.keys():
        print(key,user_dict[key])
    dict4={"calc":"fail"}
    return jsonify(dict4)

if __name__ == '__main__'://flask例項化，上面相當於類的子函式
    app.run()