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(); ?????}})对于前端POST请求发送过来的json数据，Flask后台可使用 request.get_data() 来接收数据，数据的格式为 bytes；加上as_text=True 参数后就变成 Unicode 了； 再使用 json.loads() 方法就可以转换字典。
示例代码：
from flask import Flask, render_template, request, make_responseimport jsonimport 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)) ??# request.get_data(as_text=True) ： 获取前端POST请求传过来的 json 数据 ???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()参考链接：https://blog.csdn.net/qq_29113041/article/details/80392597
Flask处理前端POST过来的JSON
原文地址：https://www.cnblogs.com/neozheng/p/10440405.html