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()

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