Django REST framework+Vue 打造生鲜超市（十一） 十二、支付宝沙箱环境配置

-----BEGIN PRIVATE KEY-----
-----END PRIVATE KEY-----

pip install pycryptodome

# apps/utils.py

import json
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


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
        #私钥
        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())
        #公钥
        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):
        #请求参数
        biz_content = {
            "subject": subject,
            "out_trade_no": out_trade_no,
            "total_amount": total_amount,
            "product_code": "FAST_INSTANT_TRADE_PAY",
            # "qr_pay_mode":4
        }
        #允许传递更多参数，放到biz_content
        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):
        #build_body主要生产消息的格式
        #公共请求参数
        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):
        #签名
        data.pop("sign", None)
        # 排序后的字符串
        unsigned_items = self.ordered_data(data)
        #排完序后拼接起来
        unsigned_string = "&".join("{0}={1}".format(k, v) for k, v in unsigned_items)
        #这里得到签名的字符串
        sign = self.sign(unsigned_string.encode("utf-8"))
        #对url进行处理
        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

    #参数传进来一定要排序
    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
        #签名的对象
        signer = PKCS1_v1_5.new(key)
        #生成签名
        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):
        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&timestamp=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]


# 测试用例
    alipay = AliPay(
        # 沙箱里面的appid值
        appid="2016091500517456",
        #notify_url是异步的url
        app_notify_url="http://127.0.0.1:8000/",
        # 我们自己商户的密钥
        app_private_key_path="../trade/keys/private_2048.txt",
        # 支付宝的公钥
        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为true时使用沙箱的url。如果不是用正式环境的url
        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))

    # 直接支付:生成请求的字符串。
    url = alipay.direct_pay(
        # 订单标题
        subject="测试订单derek",
        # 我们商户自行生成的订单号
        out_trade_no="20180417derek",
        # 订单金额
        total_amount=100,
        #成功付款后跳转到的页面，return_url同步的url
        # return_url="http://127.0.0.1:8000/"
    )
    # 将生成的请求字符串拿到我们的url中进行拼接
    re_url = "https://openapi.alipaydev.com/gateway.do?{data}".format(data=url)

    print(re_url)

# 配置支付宝支付相关接口的url
path('alipay/return/', AlipayView.as_view())

return_url="http://47.93.198.159:8000/alipay/return/"

app_notify_url="http://47.93.198.159:8000/alipay/return/"

# apps/utils.py

import json
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


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
        #私钥
        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())
        #公钥
        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):
        #请求参数
        biz_content = {
            "subject": subject,
            "out_trade_no": out_trade_no,
            "total_amount": total_amount,
            "product_code": "FAST_INSTANT_TRADE_PAY",
            # "qr_pay_mode":4
        }
        #允许传递更多参数，放到biz_content
        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):
        #build_body主要生产消息的格式
        #公共请求参数
        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):
        #签名
        data.pop("sign", None)
        # 排序后的字符串
        unsigned_items = self.ordered_data(data)
        #排完序后拼接起来
        unsigned_string = "&".join("{0}={1}".format(k, v) for k, v in unsigned_items)
        #这里得到签名的字符串
        sign = self.sign(unsigned_string.encode("utf-8"))
        #对url进行处理
        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

    #参数传进来一定要排序
    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
        #签名的对象
        signer = PKCS1_v1_5.new(key)
        #生成签名
        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):
        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&timestamp=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]


# 测试用例
    alipay = AliPay(
        # 沙箱里面的appid值
        appid="2016091500517456",
        #notify_url是异步的url
        app_notify_url="http://47.93.198.159:8000/alipay/return/",
        # 我们自己商户的密钥
        app_private_key_path="../trade/keys/private_2048.txt",
        # 支付宝的公钥
        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为true时使用沙箱的url。如果不是用正式环境的url
        debug=True,  # 默认False,
        return_url="http://47.93.198.159:8000/alipay/return/"
    )

    for key, value in query.items():
        processed_query[key] = value[0]
    # print (alipay.verify(processed_query, ali_sign))

    # 直接支付:生成请求的字符串。
    url = alipay.direct_pay(
        # 订单标题
        subject="测试订单derek",
        # 我们商户自行生成的订单号
        out_trade_no="20180417derek2",
        # 订单金额
        total_amount=100,
        #成功付款后跳转到的页面，return_url同步的url
        return_url="http://47.93.198.159:8000/alipay/return/"
    )
    # 将生成的请求字符串拿到我们的url中进行拼接
    re_url = "https://openapi.alipaydev.com/gateway.do?{data}".format(data=url)

    print(re_url)

# 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')

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 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="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/"
        )

        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:
            order_sn = processed_dict.get('out_trade_no', None)
            trade_no = processed_dict.get('trade_no', None)
            trade_status = processed_dict.get('trade_status', None)

            existed_orders = OrderInfo.objects.filter(order_sn=order_sn)
            for existed_order in existed_orders:
                existed_order.pay_status = trade_status
                existed_order.trade_no = trade_no
                existed_order.pay_time = datetime.now()
                existed_order.save()


    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")

 #支付订单的url
    alipay_url = serializers.SerializerMethodField(read_only=True)

    def get_alipay_url(self, obj):
        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/"
        )

        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

# trade/serializer.py
__author__ = 'derek'

import time

from .models import ShoppingCart
from rest_framework import serializers
from goods.models import Goods
from goods.serializers import GoodsSerializer
from .models import OrderInfo,OrderGoods
from MxShop.settings import ali_pub_key_path, private_key_path
from utils.alipay import AliPay

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")


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


#订单中的商品
class OrderGoodsSerialzier(serializers.ModelSerializer):
    goods = GoodsSerializer(many=False)
    class Meta:
        model = OrderGoods
        fields = "__all__"

#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="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/"
        )

        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="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/"
        )

        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__"

let local_host = 'http://47.93.198.159:8000';

cnpm run build

STATIC_URL = '/static/'
STATICFILES_DIRS = (
    os.path.join(BASE_DIR, "static"),
)

<script type="text/javascript" src="/static/index.entry.js"></script></body>

from django.views.generic import TemplateView

urlpatterns = [
    # 首页
    path('index/', TemplateView.as_view(template_name='index.html'),name='index')
]

 response = redirect("/index/#/app/home/member/order")
            return response

        else:
            response = redirect("index")
            return response

# trade/views.py

from rest_framework import viewsets
from rest_framework.permissions import IsAuthenticated
from utils.permissions import IsOwnerOrReadOnly
from rest_framework_jwt.authentication import JSONWebTokenAuthentication
from rest_framework.authentication import SessionAuthentication
from .serializers import ShopCartSerializer,ShopCartDetailSerializer,OrderDetailSerializer,OrderGoodsSerialzier,OrderSerializer
from .models import ShoppingCart,OrderGoods,OrderInfo
from rest_framework import mixins
from django.shortcuts import render, redirect


class ShoppingCartViewset(viewsets.ModelViewSet):
    """
    购物车功能
    list:
        获取购物车详情
    create：
        加入购物车
    delete：
        删除购物记录
    """
    permission_classes = (IsAuthenticated, IsOwnerOrReadOnly)
    authentication_classes = (JSONWebTokenAuthentication, SessionAuthentication)
    serializer_class = ShopCartSerializer
    #商品的id
    lookup_field = "goods_id"

    def get_serializer_class(self):
        if self.action == 'list':
            return ShopCartDetailSerializer
        else:
            return ShopCartSerializer

    #获取购物车列表
    def get_queryset(self):
        return ShoppingCart.objects.filter(user=self.request.user)


class OrderViewset(mixins.ListModelMixin, mixins.RetrieveModelMixin, mixins.CreateModelMixin, mixins.DestroyModelMixin,
                   viewsets.GenericViewSet):
    """
    订单管理
    list:
        获取个人订单
    delete:
        删除订单
    create：
        新增订单
    """
    permission_classes = (IsAuthenticated, IsOwnerOrReadOnly)
    authentication_classes = (JSONWebTokenAuthentication, SessionAuthentication)
    serializer_class = OrderSerializer
    #动态配置serializer
    def get_serializer_class(self):
        if self.action == "retrieve":
            return OrderDetailSerializer
        return OrderSerializer
    #获取订单列表
    def get_queryset(self):
        return OrderInfo.objects.filter(user=self.request.user)

    #在订单提交保存之前还需要多两步步骤，所以这里自定义perform_create方法
    #1.将购物车中的商品保存到OrderGoods中
    #2.情况购物车
    def perform_create(self, serializer):
        order = serializer.save()
        # 获取购物车所有商品
        shop_carts = ShoppingCart.objects.filter(user=self.request.user)
        for shop_cart in shop_carts:
            order_goods = OrderGoods()
            order_goods.goods = shop_cart.goods
            order_goods.goods_num = shop_cart.nums
            order_goods.order = order
            order_goods.save()
            #清空购物车
            shop_cart.delete()
        return order

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 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="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/"
        )

        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:
            order_sn = processed_dict.get('out_trade_no', None)
            trade_no = processed_dict.get('trade_no', None)
            trade_status = processed_dict.get('trade_status', None)

            existed_orders = OrderInfo.objects.filter(order_sn=order_sn)
            for existed_order in existed_orders:
                existed_order.pay_status = trade_status
                existed_order.trade_no = trade_no
                existed_order.pay_time = datetime.now()
                existed_order.save()

            response = redirect("/index/#/app/home/member/order")
            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="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")