1.1 goods/urls.py中注册路由
urlpatterns = [ path('getpayurl/', views.PayUrlView.as_view()), # /goods/getpayurl/ ]
1.2 goods/views.py 中写视图函数
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from rest_framework.views import APIView from rest_framework.permissions import AllowAny, IsAuthenticated from rest_framework.response import Response from .models import Goods,Orders,GoodsCourse from goods.utils import get_order_id, get_pay_url, alipay from decimal import Decimal class PayUrlView(APIView): permission_classes = (IsAuthenticated,) def post(self, request): # 1. 获取课程id,获取购买途径(普通购买, 促销购买) 获取用户 goods_id = request.data.get('goods_id') goods = Goods.objects.get(id=goods_id) user = request.user # 2. 下定单 order_id = get_order_id() if user.vip.vip_type == '1': # 普通会员 goods_price = goods.price * Decimal('0.80').quantize(Decimal('0.00')) elif user.vip.vip_type == '2': # 高级会员 goods_price = goods.price * Decimal('0.60').quantize(Decimal('0.00')) else: # 普通用户 goods_price = goods.price goods_price = Decimal(goods_price).quantize(Decimal('0.00')) order = Orders(user=user, goods=goods, order_id=order_id, pay_method=1, status=1, total_amount=goods_price) order.save() print(order.total_amount,type(order.total_amount)) # 3. 根据订单 生成支付链接 subject = "实验楼订单:%s, 价格:%s" % (order.order_id, order.total_amount) pay_url = get_pay_url(order.order_id, order.total_amount, subject) # 4. 返回链接 return Response({"code": 0, "msg": "下单成功", "data": {"pay_url": pay_url}})
1.3 goods/utils.py中生成随机订单函数和生成支付URL函数
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# -*- coding: utf-8 -*- import datetime import os import random from alipay import AliPay from syl import settings # 获取文件路径 app_private_key_path = os.path.join(settings.BASE_DIR, "apps/goods/keys/app_private_key.pem") alipay_public_key_path = os.path.join(settings.BASE_DIR, "apps/goods/keys/alipay_public_key.pem") with open(app_private_key_path) as f: app_private_key_string = f.read() with open(alipay_public_key_path) as f: alipay_public_key_string = f.read() # 创建支付宝支付对象 alipay = AliPay( appid=settings.ALIPAY_APPID, app_notify_url=None, # 默认回调url app_private_key_string=app_private_key_string, alipay_public_key_string=alipay_public_key_string, # app_private_key_path=app_private_key_path, # alipay_public_key_path=alipay_public_key_path, sign_type="RSA2", debug=settings.ALIPAY_DEBUG ) def get_pay_url(out_trade_no, total_amount, subject): # 生成登录支付宝连接 order_string = alipay.api_alipay_trade_page_pay( out_trade_no=out_trade_no, total_amount=str(total_amount), subject=subject, return_url=settings.ALIPAY_RETURN_URL, ) # 响应登录支付宝连接 # 真实环境电脑网站支付网关:https://openapi.alipay.com/gateway.do? + order_string # 沙箱环境电脑网站支付网关:https://openapi.alipaydev.com/gateway.do? + order_string alipay_url = settings.ALIPAY_URL + "?" + order_string return alipay_url def get_order_id(): """ SYL202008241212121200005/24 生成订单号: 格式: SYL + 年月日时分秒 + 5位随机数 :return: """ d = datetime.datetime.now() base = 'SYL' 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
1.4 syl/setings.py中配置支付相关参数
# 支付宝配置 ALIPAY_APPID = '2016101800716047' # 沙箱环境中alipay应用ID ALIPAY_DEBUG = True ALIPAY_URL = 'https://openapi.alipaydev.com/gateway.do' # alipay沙箱环境支付宝网管 ALIPAY_RETURN_URL = 'http://127.0.0.1:8888/payment/callback/' # 支付完成后支付宝回调我们应用的地址
2.测试
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请求地址
http://192.168.56.100:8888/goods/getpayurl/
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携带参数
{ "goods_id":1 }
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返回数据
{ "code":0, "msg":"下单成功", "data":{ "pay_url":"https://openapi.alipaydev.com/gateway.do?app_id=2016101800716047&biz_content=%7B%22subject%22%3A%22%5Cu5b9e%5Cu9a8c%5Cu697c%5Cu8ba2%5Cu5355%3ASYL2020101216322149584%2C+%5Cu4ef7%5Cu683c%3A99.00%22%2C%22out_trade_no%22%3A%22SYL2020101216322149584%22%2C%22total_amount%22%3A%2299.00%22%2C%22product_code%22%3A%22FAST_INSTANT_TRADE_PAY%22%7D&charset=utf-8&method=alipay.trade.page.pay&return_url=http%3A%2F%2F127.0.0.1%3A8888%2Fpayment%2Fcallback%2F&sign_type=RSA2×tamp=2020-10-12+16%3A32%3A21&version=1.0&sign=qIM7yrjYgvqOn2DCYK4rBgtwqDnZ%2BTwf89axXQPMzk67FOOHH18YtnoROi4ml5i5w%2Fd%2FtD2RsYyxU5Jeatxw9Skz%2B9HQCAYfmQriYDo5fz2hOrC6Ydx92z5%2BB5o%2BUIh29EAE8JS5MhUOOO8T3r9NtzmQTOs0kSWpnaXjX4S7l9Z83li76MG83H18jBodpWofgzcTTDdPsBnaHmeeJjGg9LKgSDS37ZKP9GE79asVn8S9w49qVmTPzZGdKIZxyLf2K44EllnGxhlDLFRlGLYJOlE%2Bxo1hr3IKH40WoYh3fkmv2%2FEDnl0OtNXHt5HRUH4uZ2k38BNf1ebrODRqWRg1eQ%3D%3D" } }
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支付宝回调接口
http://127.0.0.1:8888/payment/callback/? charset=utf-8& out_trade_no=SYL2020101506280949732& method=alipay.trade.page.pay.return& total_amount=44.00& sign=bzLju9A5Ax4jjWTKrmCs1Z4J%2BWhbayaYDAdWONWbKFeWmyRWk%2Fxd3QwsfaHqnwPEo8mtCR4n3OCGHI410aD10LdwAZ%2FRmWfh3t4ATL7UOiTqrMH0x0gOpAGll2HSN4Nq2sVdiPbiK1RAaY%2B83F5%2FgTUNa7i20cJ8kXcXhQRDE5t5f4WNBtscgF661mvjQjgCw4pqK3MiivAnOGCeJ4PKO0qHDOPfXLrZEfvtHqLexTEsgSko%2Bb9W%2BQukvcmaxp%2BOnB%2F6XbDL7aH0swVtUQvvF%2F6jOMXr23AHg6QnzAYbZhJhvaLBP6BFjVwK%2B1xgNYOEvQa0Ukxwp%2FWLXwSPsamK%2Bg%3D%3D& trade_no=2020101522001428980501059961& auth_app_id=2016101800716047& version=1.0& app_id=2016101800716047& sign_type=RSA2& seller_id=2088102180143385& timestamp=2020-10-15%2014%3A28%3A49