09 | Django REST framework+Vue 生鲜超市 ——支付宝
支付宝沙箱环境配置
创建应用
进入蚂蚁金服开放平台，登录后进入管理中心-->>应用列表
https://open.alipay.com/platform/home.htm
创建应用
创建应用后会有一个appid。还需要提交信息进行审核。微信支付和支付宝支付都是要求企业认证才可以完成的，个人开发不可以，所以我们需要用
沙箱环境，它可以让我们不具备这些应用或者说应用审核还没通过的时候先开发调试
沙箱环境
沙箱应用地址：
https://openhome.alipay.com/platform/appDaily.htm?tab=info
（1）公钥和私钥的生成方法
地址：https://docs.open.alipay.com/291/105971/
选winwods，如果linux就选linux
下载好工具照着生成就可以了
（2） 把生成的公钥和私钥拷贝到trade/keys下面--->>>重命名--->>首位各添加下面的内容
-----BEGIN PRIVATE KEY----- -----END PRIVATE KEY-----
（3）把支付宝公钥也拷贝到这路径下面，同样首尾添加
支付宝API文档说明
我们主要用到电脑网站支付，文档地址：https://docs.open.alipay.com/270
用到的API接口：统一收单下单并支付页面接口
里面有文档说明
几个比较重要的参数
sign签名
应该看未使用开放平台的SDK里面的说明：
https://docs.open.alipay.com/291/106118
请求参数
必填的几个：
编写代码
把环境改成本地的
首先的安装一个模块
pip install pycryptodome
utils中新建alipay.py，代码如下：
# -*- coding: utf-8 -*- # pip install pycryptodome __author__ = 'bobby' from datetime import datetime from Crypto.PublicKey import RSA from Crypto.Signature import PKCS1_v1_5 from Crypto.Hash import SHA256 from base64 import b64encode, b64decode from urllib.parse import quote_plus from urllib.parse import urlparse, parse_qs from urllib.request import urlopen from base64 import decodebytes, encodebytes import json class AliPay(object): """ 支付宝支付接口 """ def __init__(self, appid, app_notify_url, app_private_key_path, alipay_public_key_path, return_url, debug=False): self.appid = appid self.app_notify_url = app_notify_url self.app_private_key_path = app_private_key_path self.app_private_key = None self.return_url = return_url with open(self.app_private_key_path) as fp: self.app_private_key = RSA.importKey(fp.read()) self.alipay_public_key_path = alipay_public_key_path with open(self.alipay_public_key_path) as fp: self.alipay_public_key = RSA.import_key(fp.read()) if debug is True: self.__gateway = "https://openapi.alipaydev.com/gateway.do" else: self.__gateway = "https://openapi.alipay.com/gateway.do" def direct_pay(self, subject, out_trade_no, total_amount, return_url=None, **kwargs): biz_content = { "subject": subject, "out_trade_no": out_trade_no, "total_amount": total_amount, "product_code": "FAST_INSTANT_TRADE_PAY", # "qr_pay_mode":4 } biz_content.update(kwargs) data = self.build_body("alipay.trade.page.pay", biz_content, self.return_url) return self.sign_data(data) def build_body(self, method, biz_content, return_url=None): data = { "app_id": self.appid, "method": method, "charset": "utf-8", "sign_type": "RSA2", "timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S"), "version": "1.0", "biz_content": biz_content } if return_url is not None: data["notify_url"] = self.app_notify_url data["return_url"] = self.return_url return data def sign_data(self, data): data.pop("sign", None) # 排序后的字符串 unsigned_items = self.ordered_data(data) unsigned_string = "&".join("{0}={1}".format(k, v) for k, v in unsigned_items) sign = self.sign(unsigned_string.encode("utf-8")) # ordered_items = self.ordered_data(data) quoted_string = "&".join("{0}={1}".format(k, quote_plus(v)) for k, v in unsigned_items) # 获得最终的订单信息字符串 signed_string = quoted_string + "&sign=" + quote_plus(sign) return signed_string def ordered_data(self, data): complex_keys = [] for key, value in data.items(): if isinstance(value, dict): complex_keys.append(key) # 将字典类型的数据dump出来 for key in complex_keys: data[key] = json.dumps(data[key], separators=(',', ':')) return sorted([(k, v) for k, v in data.items()]) def sign(self, unsigned_string): # 开始计算签名 key = self.app_private_key signer = PKCS1_v1_5.new(key) signature = signer.sign(SHA256.new(unsigned_string)) # base64 编码，转换为unicode表示并移除回车 sign = encodebytes(signature).decode("utf8").replace("\n", "") return sign def _verify(self, raw_content, signature): # 开始计算签名 key = self.alipay_public_key signer = PKCS1_v1_5.new(key) digest = SHA256.new() digest.update(raw_content.encode("utf8")) if signer.verify(digest, decodebytes(signature.encode("utf8"))): return True return False def verify(self, data, signature): # 支付成功后回调对支付宝的信息进行反向签名的认证 if "sign_type" in data: sign_type = data.pop("sign_type") # 排序后的字符串 unsigned_items = self.ordered_data(data) message = "&".join(u"{}={}".format(k, v) for k, v in unsigned_items) return self._verify(message, signature) if __name__ == "__main__": return_url = 'http://127.0.0.1:8000/?total_amount=100.00×tamp=2017-08-15+23%3A53%3A34&sign=e9E9UE0AxR84NK8TP1CicX6aZL8VQj68ylugWGHnM79zA7BKTIuxxkf%2FvhdDYz4XOLzNf9pTJxTDt8tTAAx%2FfUAJln4WAeZbacf1Gp4IzodcqU%2FsIc4z93xlfIZ7OLBoWW0kpKQ8AdOxrWBMXZck%2F1cffy4Ya2dWOYM6Pcdpd94CLNRPlH6kFsMCJCbhqvyJTflxdpVQ9kpH%2B%2Fhpqrqvm678vLwM%2B29LgqsLq0lojFWLe5ZGS1iFBdKiQI6wZiisBff%2BdAKT9Wcao3XeBUGigzUmVyEoVIcWJBH0Q8KTwz6IRC0S74FtfDWTafplUHlL%2Fnf6j%2FQd1y6Wcr2A5Kl6BQ%3D%3D&trade_no=2017081521001004340200204115&sign_type=RSA2&auth_app_id=2016080600180695&charset=utf-8&seller_id=2088102170208070&method=alipay.trade.page.pay.return&app_id=2016080600180695&out_trade_no=20170202185&version=1.0' o = urlparse(return_url) query = parse_qs(o.query) processed_query = {} ali_sign = query.pop("sign")[0] alipay = AliPay( appid="2016090900469819", app_notify_url="http://127.0.0.1:8000/alipay/return/", app_private_key_path="../trade/keys/private_2048.txt", alipay_public_key_path="../trade/keys/alipay_key_2048.txt", # 支付宝的公钥，验证支付宝回传消息使用，不是你自己的公钥, debug=True, # 默认False, return_url="http://127.0.0.1:8000/alipay/return/" ) for key, value in query.items(): processed_query[key] = value[0] print (alipay.verify(processed_query, ali_sign)) url = alipay.direct_pay( subject="测试订单", out_trade_no="20170202ss",# 每次的订单号不能重复了 total_amount=100, return_url="http://127.0.0.1:8000/alipay/return/" ) re_url = "https://openapi.alipaydev.com/gateway.do?{data}".format(data=url) print(re_url)
运行alipay.py,会生成一个支付链接url，点进去跳到支付页面
点“登录账户付款”，用沙箱账号付款
输入账号密码以及支付密码，成功付款
django集成支付宝notify_url和return_url
（1）配置url
# 配置支付宝支付相关接口的url
url('alipay/return/', AlipayView.as_view())
（2）alipay.py
把return_url和notify_url都改成远程服务器的地址
return_url="http://47.95.8.70:8000/alipay/return/" app_notify_url="http://47.95.8.70:8000/alipay/return/"
# -*- coding: utf-8 -*- # pip install pycryptodome __author__ = 'bobby' from datetime import datetime from Crypto.PublicKey import RSA from Crypto.Signature import PKCS1_v1_5 from Crypto.Hash import SHA256 from base64 import b64encode, b64decode from urllib.parse import quote_plus from urllib.parse import urlparse, parse_qs from urllib.request import urlopen from base64 import decodebytes, encodebytes import json class AliPay(object): """ 支付宝支付接口 """ def __init__(self, appid, app_notify_url, app_private_key_path, alipay_public_key_path, return_url, debug=False): self.appid = appid self.app_notify_url = app_notify_url self.app_private_key_path = app_private_key_path self.app_private_key = None self.return_url = return_url with open(self.app_private_key_path) as fp: self.app_private_key = RSA.importKey(fp.read()) self.alipay_public_key_path = alipay_public_key_path with open(self.alipay_public_key_path) as fp: self.alipay_public_key = RSA.import_key(fp.read()) if debug is True: self.__gateway = "https://openapi.alipaydev.com/gateway.do" else: self.__gateway = "https://openapi.alipay.com/gateway.do" def direct_pay(self, subject, out_trade_no, total_amount, return_url=None, **kwargs): biz_content = { "subject": subject, "out_trade_no": out_trade_no, "total_amount": total_amount, "product_code": "FAST_INSTANT_TRADE_PAY", # "qr_pay_mode":4 } biz_content.update(kwargs) data = self.build_body("alipay.trade.page.pay", biz_content, self.return_url) return self.sign_data(data) def build_body(self, method, biz_content, return_url=None): data = { "app_id": self.appid, "method": method, "charset": "utf-8", "sign_type": "RSA2", "timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S"), "version": "1.0", "biz_content": biz_content } if return_url is not None: data["notify_url"] = self.app_notify_url data["return_url"] = self.return_url return data def sign_data(self, data): data.pop("sign", None) # 排序后的字符串 unsigned_items = self.ordered_data(data) unsigned_string = "&".join("{0}={1}".format(k, v) for k, v in unsigned_items) sign = self.sign(unsigned_string.encode("utf-8")) # ordered_items = self.ordered_data(data) quoted_string = "&".join("{0}={1}".format(k, quote_plus(v)) for k, v in unsigned_items) # 获得最终的订单信息字符串 signed_string = quoted_string + "&sign=" + quote_plus(sign) return signed_string def ordered_data(self, data): complex_keys = [] for key, value in data.items(): if isinstance(value, dict): complex_keys.append(key) # 将字典类型的数据dump出来 for key in complex_keys: data[key] = json.dumps(data[key], separators=(',', ':')) return sorted([(k, v) for k, v in data.items()]) def sign(self, unsigned_string): # 开始计算签名 key = self.app_private_key signer = PKCS1_v1_5.new(key) signature = signer.sign(SHA256.new(unsigned_string)) # base64 编码，转换为unicode表示并移除回车 sign = encodebytes(signature).decode("utf8").replace("\n", "") return sign def _verify(self, raw_content, signature): # 开始计算签名 key = self.alipay_public_key signer = PKCS1_v1_5.new(key) digest = SHA256.new() digest.update(raw_content.encode("utf8")) if signer.verify(digest, decodebytes(signature.encode("utf8"))): return True return False def verify(self, data, signature): # 支付成功后回调对支付宝的信息进行反向签名的认证 if "sign_type" in data: sign_type = data.pop("sign_type") # 排序后的字符串 unsigned_items = self.ordered_data(data) message = "&".join(u"{}={}".format(k, v) for k, v in unsigned_items) return self._verify(message, signature) if __name__ == "__main__": return_url = 'http://127.0.0.1:8000/?total_amount=100.00×tamp=2017-08-15+23%3A53%3A34&sign=e9E9UE0AxR84NK8TP1CicX6aZL8VQj68ylugWGHnM79zA7BKTIuxxkf%2FvhdDYz4XOLzNf9pTJxTDt8tTAAx%2FfUAJln4WAeZbacf1Gp4IzodcqU%2FsIc4z93xlfIZ7OLBoWW0kpKQ8AdOxrWBMXZck%2F1cffy4Ya2dWOYM6Pcdpd94CLNRPlH6kFsMCJCbhqvyJTflxdpVQ9kpH%2B%2Fhpqrqvm678vLwM%2B29LgqsLq0lojFWLe5ZGS1iFBdKiQI6wZiisBff%2BdAKT9Wcao3XeBUGigzUmVyEoVIcWJBH0Q8KTwz6IRC0S74FtfDWTafplUHlL%2Fnf6j%2FQd1y6Wcr2A5Kl6BQ%3D%3D&trade_no=2017081521001004340200204115&sign_type=RSA2&auth_app_id=2016080600180695&charset=utf-8&seller_id=2088102170208070&method=alipay.trade.page.pay.return&app_id=2016080600180695&out_trade_no=20170202185&version=1.0' o = urlparse(return_url) query = parse_qs(o.query) processed_query = {} ali_sign = query.pop("sign")[0] alipay = AliPay( appid="2016090900469819", app_notify_url="http://47.95.8.70:8000/alipay/return/", app_private_key_path="../trade/keys/private_2048.txt", alipay_public_key_path="../trade/keys/alipay_key_2048.txt", # 支付宝的公钥，验证支付宝回传消息使用，不是你自己的公钥, debug=True, # 默认False, return_url="http://47.95.8.70:8000/alipay/return/" ) for key, value in query.items(): processed_query[key] = value[0] print (alipay.verify(processed_query, ali_sign)) url = alipay.direct_pay( subject="测试订单", out_trade_no="20170202ss",# 每次的订单号不能重复了 total_amount=100, return_url="http://127.0.0.1:8000/alipay/return/" ) re_url = "https://openapi.alipaydev.com/gateway.do?{data}".format(data=url) print(re_url)
（3）settings.py
settings中配置公钥私钥路径
# 支付宝相关的key private_key_path = os.path.join(BASE_DIR, 'apps/trade/keys/private_2048.txt') ali_pub_key_path = os.path.join(BASE_DIR, 'apps/trade/keys/alipay_key_2048.txt')
（4）trade/views.py
from datetime import datetime from utils.alipay import AliPay from rest_framework.views import APIView from MxShop.settings import ali_pub_key_path, private_key_path from rest_framework.response import Response class AlipayView(APIView): def post(self, request): """ 处理支付宝的notify_url """ #存放post里面所有的数据 processed_dict = {} #取出post里面的数据 for key, value in request.POST.items(): processed_dict[key] = value #把signpop掉，文档有说明 sign = processed_dict.pop("sign", None) #生成一个Alipay对象 alipay = AliPay( appid="2016091500517456", app_notify_url="http://47.93.198.159:8000/alipay/return/", app_private_key_path=private_key_path, alipay_public_key_path=ali_pub_key_path, # 支付宝的公钥，验证支付宝回传消息使用，不是你自己的公钥, debug=True, # 默认False, return_url="http://47.93.198.159:8000/alipay/return/" ) #进行验证 verify_re = alipay.verify(processed_dict, sign) # 如果验签成功 if verify_re is True: #商户网站唯一订单号 order_sn = processed_dict.get('out_trade_no', None) #支付宝系统交易流水号 trade_no = processed_dict.get('trade_no', None) #交易状态 trade_status = processed_dict.get('trade_status', None) # 查询数据库中订单记录 existed_orders = OrderInfo.objects.filter(order_sn=order_sn) for existed_order in existed_orders: # 订单商品项 order_goods = existed_order.goods.all() # 商品销量增加订单中数值 for order_good in order_goods: goods = order_good.goods goods.sold_num += order_good.goods_num goods.save() # 更新订单状态 existed_order.pay_status = trade_status existed_order.trade_no = trade_no existed_order.pay_time = datetime.now() existed_order.save() #需要返回一个'success'给支付宝，如果不返回，支付宝会一直发送订单支付成功的消息 return Response("success")
（5）trade/serializers.py
创建订单的时候生成一个支付的url，这个逻辑OderSerializer和OrderDetailSerializer中都添加
alipay_url = serializers.SerializerMethodField(read_only=True) def get_alipay_url(self, obj): alipay = AliPay( appid="2016090900469819", app_notify_url="http://47.95.8.70:8000/alipay/return/", app_private_key_path=private_key_path, alipay_public_key_path=ali_pub_key_path, # 支付宝的公钥，验证支付宝回传消息使用，不是你自己的公钥, debug=True, # 默认False, return_url="http://47.95.8.70:8000/alipay/return/" ) url = alipay.direct_pay( subject=obj.order_sn, out_trade_no=obj.order_sn, total_amount=obj.order_mount, ) re_url = "https://openapi.alipaydev.com/gateway.do?{data}".format(data=url) return re_url
from .models import ShoppingCart from rest_framework import serializers from goods.models import Goods class ShopCartSerializer(serializers.Serializer): #获取当前登录的用户 user = serializers.HiddenField( default=serializers.CurrentUserDefault() ) nums = serializers.IntegerField(required=True, label="数量",min_value=1, error_messages={ "min_value":"商品数量不能小于一", "required": "请选择购买数量" }) #这里是继承Serializer，必须指定queryset对象，如果继承ModelSerializer则不需要指定 #goods是一个外键，可以通过这方法获取goods object中所有的值 goods = serializers.PrimaryKeyRelatedField(required=True, queryset=Goods.objects.all()) #继承的Serializer没有save功能，必须写一个create方法 def create(self, validated_data): # validated_data是已经处理过的数据 #获取当前用户 # view中:self.request.user；serizlizer中:self.context["request"].user user = self.context["request"].user nums = validated_data["nums"] goods = validated_data["goods"] existed = ShoppingCart.objects.filter(user=user, goods=goods) #如果购物车中有记录，数量+1 #如果购物车车没有记录，就创建 if existed: existed = existed[0] existed.nums += nums existed.save() else: #添加到购物车 existed = ShoppingCart.objects.create(**validated_data) return existed def update(self, instance, validated_data): # 修改商品数量 instance.nums = validated_data["nums"] instance.save() return instance from goods.serializers import GoodsSerializer class ShopCartDetailSerializer(serializers.ModelSerializer): ''' 购物车商品详情信息 ''' # 一个购物车对应一个商品 goods = GoodsSerializer(many=False, read_only=True) class Meta: model = ShoppingCart fields = ("goods", "nums") from .models import * import time class OrderGoodsSerialzier(serializers.ModelSerializer): goods = GoodsSerializer(many=False) class Meta: model = OrderGoods fields = "__all__" from utils.alipay import AliPay from MxShop.settings import private_key_path, ali_pub_key_path #订单商品信息 # goods字段需要嵌套一个OrderGoodsSerializer class OrderDetailSerializer(serializers.ModelSerializer): goods = OrderGoodsSerialzier(many=True) # 支付订单的url alipay_url = serializers.SerializerMethodField(read_only=True) def get_alipay_url(self, obj): alipay = AliPay( appid="2016090900469819", app_notify_url="http://47.95.8.70:8000/alipay/return/", app_private_key_path=private_key_path, alipay_public_key_path=ali_pub_key_path, # 支付宝的公钥，验证支付宝回传消息使用，不是你自己的公钥, debug=True, # 默认False, return_url="http://47.95.8.70:8000/alipay/return/" ) url = alipay.direct_pay( subject=obj.order_sn, out_trade_no=obj.order_sn, total_amount=obj.order_mount, ) re_url = "https://openapi.alipaydev.com/gateway.do?{data}".format(data=url) return re_url class Meta: model = OrderInfo fields = "__all__" class OrderSerializer(serializers.ModelSerializer): user = serializers.HiddenField( default=serializers.CurrentUserDefault() ) #生成订单的时候这些不用post pay_status = serializers.CharField(read_only=True) trade_no = serializers.CharField(read_only=True) order_sn = serializers.CharField(read_only=True) pay_time = serializers.DateTimeField(read_only=True) nonce_str = serializers.CharField(read_only=True) pay_type = serializers.CharField(read_only=True) # 支付订单的url alipay_url = serializers.SerializerMethodField(read_only=True) def get_alipay_url(self, obj): alipay = AliPay( appid="2016090900469819", app_notify_url="http://47.95.8.70:8000/alipay/return/", app_private_key_path=private_key_path, alipay_public_key_path=ali_pub_key_path, # 支付宝的公钥，验证支付宝回传消息使用，不是你自己的公钥, debug=True, # 默认False, return_url="http://47.95.8.70:8000/alipay/return/" ) url = alipay.direct_pay( subject=obj.order_sn, out_trade_no=obj.order_sn, total_amount=obj.order_mount, ) re_url = "https://openapi.alipaydev.com/gateway.do?{data}".format(data=url) return re_url def generate_order_sn(self): #生成订单号 # 当前时间+userid+随机数 from random import Random random_ins = Random() order_sn = "{time_str}{userid}{ranstr}".format(time_str=time.strftime("%Y%m%d%H%M%S"), userid=self.context["request"].user.id, ranstr=random_ins.randint(10, 99)) return order_sn def validate(self, attrs): #validate中添加order_sn，然后在view中就可以save attrs["order_sn"] = self.generate_order_sn() return attrs class Meta: model = OrderInfo fields = "__all__"
（6）测试代码
把本地修改的地方一定要上传到服务器，因为我们需要在服务器上调试代码
vue项目中api.js里面local_host改为服务器ip
let local_host = 'http://47.93.198.159:8000';
在phcharm中开始运行项目
浏览器访问地址：http://47.93.198.159:8000/orders/
创建一个订单
生成订单的详情
vue静态文件放到django中
vue有两种开发模式
- build 用来生成静态文件
- dev
（1）运行
cnpm run build
生成的静态文件在dist目录下面
（2）把index.html拷贝到templates目录下
（3）django中创建static目录
- 把index.entry.js考到django的static目录下面
- 把dist/static下的两个文件夹拷贝到django static目录下
（4）settings设置静态文件路径
STATIC_URL = '/static/'
STATICFILES_DIRS = (
os.path.join(BASE_DIR, "static"),
)
（5）修改index.html中静态文件路径
<script type="text/javascript" src="/static/index.entry.js"></script></body>
（6）配置index的url
from django.views.generic import TemplateView
urlpatterns = [
# 首页
url(r'^index/', TemplateView.as_view(template_name="index.html"), name="index"),
]
（7）配置支付成功return的地址
trade/views.py
在 AlipayView中的get方法中添加以下跳转
response = redirect("/index/#/app/home/member/order")
return response
else:
response = redirect("index")
return response
完整代码
from datetime import datetime from utils.alipay import AliPay from rest_framework.views import APIView from MxShop.settings import ali_pub_key_path, private_key_path from rest_framework.response import Response from rest_framework.response import Response from django.shortcuts import redirect class AlipayView(APIView): def get(self, request): """ 处理支付宝的return_url返回 """ processed_dict = {} # 1. 获取GET中参数 for key, value in request.GET.items(): processed_dict[key] = value # 2. 取出sign sign = processed_dict.pop("sign", None) # 3. 生成ALipay对象 alipay = AliPay( appid="2016090900469819", app_notify_url="http://47.95.8.70:8000/alipay/return/", app_private_key_path=private_key_path, alipay_public_key_path=ali_pub_key_path, # 支付宝的公钥，验证支付宝回传消息使用，不是你自己的公钥, debug=True, # 默认False, return_url="http://47.95.8.70:8000/alipay/return/" ) verify_re = alipay.verify(processed_dict, sign) # 这里可以不做操作。因为不管发不发return url。notify url都会修改订单状态。 if verify_re is True: response = redirect("index") response.set_cookie("nextPath", "pay", max_age=3) return response else: response = redirect("index") return response def post(self, request): """ 处理支付宝的notify_url """ #存放post里面所有的数据 processed_dict = {} #取出post里面的数据 for key, value in request.POST.items(): processed_dict[key] = value #把signpop掉，文档有说明 sign = processed_dict.pop("sign", None) #生成一个Alipay对象 alipay = AliPay( appid="2016090900469819", app_notify_url="http://47.95.8.70:8000/alipay/return/", app_private_key_path=private_key_path, alipay_public_key_path=ali_pub_key_path, # 支付宝的公钥，验证支付宝回传消息使用，不是你自己的公钥, debug=True, # 默认False, return_url="http://47.95.8.70:8000/alipay/return/" ) #进行验证 verify_re = alipay.verify(processed_dict, sign) # 如果验签成功 if verify_re is True: #商户网站唯一订单号 order_sn = processed_dict.get('out_trade_no', None) #支付宝系统交易流水号 trade_no = processed_dict.get('trade_no', None) #交易状态 trade_status = processed_dict.get('trade_status', None) # 查询数据库中订单记录 existed_orders = OrderInfo.objects.filter(order_sn=order_sn) for existed_order in existed_orders: # 订单商品项 order_goods = existed_order.goods.all() # 商品销量增加订单中数值 for order_good in order_goods: goods = order_good.goods goods.sold_num += order_good.goods_num goods.save() # 更新订单状态 existed_order.pay_status = trade_status existed_order.trade_no = trade_no existed_order.pay_time = datetime.now() existed_order.save() #需要返回一个'success'给支付宝，如果不返回，支付宝会一直发送订单支付成功的消息 return Response("success")
现在可以通过index直接访问了：http://47.93.198.159:8000/index/#/app/home/index
添加商品到购物车-->>去结算-->>生成订单-->>跳到支付页面了
