var hotel=$( "#listHotel option:selected" ).val();
$.ajax({
    url: "/getHotels",
    contentType: "application/xml; charset=utf-8",
    data: JSON.stringify({'hotel':hotel}),
    type: "POST",
    success: function(response){
        var r= JSON.parse(response);
        var rating =r.message
        alert(rating);
        $("#rate").html("Ratings : "+rating);
        $("#rate").show('slow');
        console.log(response);
    },
    error: function(error){
        alert(response);
        console.log(error);
    }
});

def getHotels():
    try:
        _hotel = {"value": request.json['hotel']}
        print _hotel
        hotel= _hotel["value"]
        print hotel

但沒有獲得JSON對(duì)象，請(qǐng)求給予幫助以獲取JSON對(duì)象/值。

from flask import Flask, request

app = Flask(__name__)

@app.route('/get_json', methods=['POST'])
def get_json():
    json_data = request.get_json()  # 獲取請(qǐng)求體中的JSON數(shù)據(jù)
    data = json.loads(json_data)  # 將JSON數(shù)據(jù)加載到一個(gè)字典中

    # 從字典中訪問(wèn)JSON數(shù)據(jù)的鍵值對(duì)
    hotel = data['hotel']
    rating = data['rating']

    # 返回響應(yīng)
    return {'hotel': hotel, 'rating': rating}

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

from flask import Flask
from flask_restful import Resource, Api

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

class Hotel(Resource):
    def post(self):
        json_data = request.get_json()  # 獲取請(qǐng)求體中的JSON數(shù)據(jù)
        data = json.loads(json_data)  # 將JSON數(shù)據(jù)加載到一個(gè)字典中

        # 從字典中訪問(wèn)JSON數(shù)據(jù)的鍵值對(duì)
        hotel = data['hotel']
        rating = data['rating']

        # 返回響應(yīng)
        return {'hotel': hotel, 'rating': rating}

api.add_resource(Hotel, '/hotel')

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