Flask处理前台POST过来的JSON

POST JSON数据的JS代码：

$.ajax({
          　　  url:'http://127.0.0.1:5000/calc',
          　　  type : 'post',
          　　  dataType:'json',
                headers: {
                    "Content-Type": "application/json;charset=utf-8"
                },
                contentType:'application/json; charset=utf-8',
                data:JSON.stringify({D:D,q:q,ls:ls,Lz:Lz,l:l,Uz:Uz,u:u,y:y,P:P,h1:h1,data_list:data_lists}),
          　　  success:function(data){
                  $("#finally").show();
              }
        })

from flask import request

后台使用request.get_data(as_text=True) 来接收数据，数据的格式为bytes，加入了as_test=True参数后就变成Unicode了

在使用json.loads()方法就可以转换成字典：

from flask import Flask, render_template, request, make_response
import json
import light_calc

app = Flask(__name__)
app.debug = True


@app.route('/', methods=['POST', 'GET'])
def main():
    return render_template('test_inputs.html')


@app.route('/calc', methods=['POST'])
def calc():
    data_list = []
    data = json.loads(request.get_data(as_text=True))
    for key, value in data.items():
        if value == '':
            data[key] = 0
    for key, value in data.items():
        if type(value) == str and value != 'i':
            data[key] = float(value)

    for i in data['data_list']:
        new_dict = {}
        new_dict['r'] = float(i['r'])
        new_dict['d'] = float(i['d'])
        new_dict['n'] = float(i['n'])
        new_dict['n_2'] = float(i['n_2'])
        data_list.append(new_dict)
    print(data)
    print(data_list)
    try:
        result = light_calc.main(data['D'], data['q'], data['ls'], data['Lz'], data['Uz'], data['l'], data['u'], data['y'],
                             data['P'], data['h1'], data_list)
        resp = make_response(result)
        resp.headers['Content-Type'] = 'text/json'
        return result
    except Exception as e:
        print(e)
        return '{"status":"500"}'

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