Django支付寶（沙箱）後端介面

點選檢視初始化沙箱配置（https://blog.csdn.net/weixin_45954124/article/details/109583431）

1. 建立app 僅供參考 你需要自己建立相應的表（model）

2. app\model

   1. # Create your models here.
      from django.db import models
      from utils.MyBaseModel import Base
      
      
      class Goods(Base):
          GOODS_TYPE = (
              ('1', 'Vip'),
              ('2', 'Course')
          )
          CHANNEL_TYPE = (
              ('1', '普通'),
              ('2', '促銷')
          )
          course = models.ForeignKey('course.Course', on_delete=models.PROTECT)
          goods_type = models.CharField('商品種類', choices=GOODS_TYPE, max_length=8)
          product_id = models.CharField('產品id', max_length=8)
          title = models.CharField('商品名稱', max_length=24)
          price = models.DecimalField('商品價格', max_digits=8, decimal_places=2)
          channel_type = models.CharField('購買渠道', choices=CHANNEL_TYPE, max_length=8)
          period = models.IntegerField('有效期', default=365)
          is_launched = models.BooleanField('是否上架', default=True)
      
          class Meta:
              db_table = 'tb_goods'
      
          def __str__(self):
              return self.title
      
      
      class Orders(Base):
          PAY_METHOD = (
              (1, "支付寶"),
          )
          ORDER_STATUS = (
              (1, "待支付"),
              (2, "已支付"),
              (3, "已取消"),
          )
          user = models.ForeignKey('user.User', on_delete=models.PROTECT, verbose_name="下單使用者")
          goods = models.ForeignKey(Goods, on_delete=models.PROTECT)
          order_id = models.CharField('訂單號', max_length=24)
          trade_no = models.CharField('支付寶訂單號', max_length=32, null=True)  # 28位
          pay_time = models.DateTimeField('支付時間', null=True)
          pay_method = models.CharField('支付方式', choices=PAY_METHOD, default=1, max_length=8)
          status = models.CharField('支付狀態', choices=ORDER_STATUS, default=1, max_length=8)
          total_amount = models.DecimalField(max_digits=10, decimal_places=2, verbose_name="商品總金額")
      
          class Meta:
              db_table = 'tb_orders'
      
          def __str__(self):
              return self.order_id
      
       
      

3. app\view

   1. # Create your views here.
      from decimal import Decimal
      
      import redis
      from rest_framework.permissions import IsAuthenticated
      from rest_framework.response import Response
      
      from rest_framework.views import APIView
      from .models import Goods, Orders
      
      from syl import settings
      from .utils import out_trade_no
      
      # 絕對路徑開啟檔案  {}代表從這裡往前
      
      
      # 支付
      from syl.settings import alipay
      
      from course.models import UserCourse
      
      
      class PayUrlView(APIView):
          permission_classes = (IsAuthenticated,)
      
          def post(self, request):
              print(request.data)
              goods_obj = Goods.objects.get(pk=request.data.get("goods_id"))
              user = request.user
              out_trade = out_trade_no()
              print(out_trade_no)
              if user.vip.vip_type == '1':
                  price = goods_obj.price * Decimal('0.80').quantize(Decimal('0.00'))
              elif user.vip.vip_type == '2':
                  price = goods_obj.price * Decimal('0.60').quantize(Decimal('0.00'))
              else:
                  price = goods_obj.price
              price = Decimal(price).quantize(Decimal('0.00'))
      
              order = Orders.objects.create(
                  user_id=user.id,
                  goods_id=goods_obj.pk,
                  order_id=out_trade,
                  total_amount=price
              )
              order.save()
              # 主題
              subject = "實驗樓"
              # 電腦網站支付，需要跳轉到https://openapi.alipay.com/gateway.do? + order_string
              order_string = alipay.api_alipay_trade_page_pay(
                  out_trade_no=out_trade,
                  total_amount=int(price),
                  subject='subject',
                  return_url=settings.RETURN_URL,
                  # notify_url="http://127.0.0.1:8000/app02/callback_alipay"  # 可選, 不填則使用預設notify url
              )
              pay_url = 'https://openapi.alipaydev.com/gateway.do?' + order_string
              return Response({'data': {'pay_url': pay_url, 'msg': 'OK', "code": 200}})
      
      
      class PeyMentView(APIView):
          def post(self, request):
              data = request.data
              data.pop("sign")
              print(data)
              orders_obj = Orders.objects.get(order_id=data['out_trade_no'])
              orders_obj.trade_no = data['trade_no']
              orders_obj.status = 2
              orders_obj.save()
      
              user = orders_obj.user
              course = orders_obj.goods.course
              print(user, course)
              usercourse = UserCourse.objects.create(user=user, course=course)
              usercourse.save()
      
              return Response({"code": 200})
      
       
      

4. app\urls

   1. """
      author:翔翔
      date:
      use:
      """
      from django.urls import path, re_path
      from . import views
      
      urlpatterns = [
          path('getpayurl/', views.PayUrlView.as_view()),
          path('peyment/', views.PeyMentView.as_view()),
      ]
      
      

5. app\utils

   1. """
      author:翔翔
      date:
      use:
      """
      import datetime
      import random
      
      
      # 生成隨機字串為訂單號
      def out_trade_no():
          base = "SYL"
          d = datetime.datetime.now()
          time_str = '%04d%02d%02d%02d%02d%02d' % (d.year, d.month, d.day, d.hour, d.minute, d.second)
          rand_num = str(random.randint(10000, 99999))
          return base + time_str + rand_num
      
      
      print(out_trade_no())
      
       
      

6. 專案/settings

   1. # 支付寶配置
      from alipay import AliPay
      
      # 回撥地址
      RETURN_URL = 'http://127.0.0.1:8888/payment/callback/'
      app_private_key_string = open('{}/apps/goods/alipay_key/app_private_key'.format(BASE_DIR)).read()
      alipay_public_key_string = open('{}/apps/goods/alipay_key/alipay_public'.format(BASE_DIR)).read()
      
      alipay = AliPay(
          appid="2016102500759596",
          app_notify_url=None,  # 預設回撥url
          app_private_key_string=app_private_key_string,
          # 支付寶的公鑰，驗證支付寶回傳訊息使用，不是你自己的公鑰,
          alipay_public_key_string=alipay_public_key_string,
          sign_type="RSA2",  # RSA 或者 RSA2
          debug=True,  # 預設False
      )
      

7. app/admin

   1. from django.contrib import admin
      from . import models
      # Register your models here.
      admin.site.register(models.Goods)
      admin.site.register(models.Orders)
      

8. 測試介面

   1. post請求
      拼接路由
      http://192.168.56.100:8888/goods/getpayurl/ 
      

回撥後傳送post請求
http://192.168.56.100:8888/goods/peyment/
```

  ​