支付宝支付

[TOC] ## 前期准备 ### 支付宝的接口  ### github上提供的API 在github上搜索alipay    ### 本地的公钥私钥   **下载之后安装启动**   ### 本地公钥换支付宝的公钥    ## 支付宝支付 ### 入门 ```python """ 1）支付宝API：六大接口 https:/https://img.qb5200.com/download-x/docs.open.alipay.com/270/105900/ 2）支付宝工作流程(见下图)： https:/https://img.qb5200.com/download-x/docs.open.alipay.com/270/105898/ 3）支付宝8次异步通知机制(支付宝对我们服务器发送POST请求，索要 success 7个字符) https:/https://img.qb5200.com/download-x/docs.open.alipay.com/270/105902/ """ ``` ```python # 1、在沙箱环境下实名认证：https://openhome.alipay.com/platform/appDaily.htm?tab=info # 2、电脑网站支付API：https:/https://img.qb5200.com/download-x/docs.open.alipay.com/270/105900/ # 3、完成RSA密钥生成：https:/https://img.qb5200.com/download-x/docs.open.alipay.com/291/105971 # 4、在开发中心的沙箱应用下设置应用公钥：填入生成的公钥文件中的内容 # 5、Python支付宝开源框架：https://github.com/fzlee/alipay # >: pip install python-alipay-sdk --upgrade # 7、公钥私钥设置 """ # alipay_public_key.pem -----BEGIN PUBLIC KEY----- 支付宝公钥 -----END PUBLIC KEY----- # app_private_key.pem -----BEGIN RSA PRIVATE KEY----- 用户私钥 -----END RSA PRIVATE KEY----- """ # 8、支付宝链接 """ 开发：https://openapi.alipay.com/gateway.do 沙箱：https://openapi.alipaydev.com/gateway.do """ ``` ## 支付流程  ## aliapy二次封装包 ### GitHub开源框架 ``` https://github.com/fzlee/alipay ``` ### 依赖 ``` >: pip install python-alipay-sdk --upgrade # 如果抛ssl相关错误，代表缺失该包 >: pip install pyopenssl ``` ### 结构 ```python libs ├── iPay # aliapy二次封装包 │ ├── __init__.py # 包文件 │ ├── pem # 公钥私钥文件夹 │ │ ├── alipay_public_key.pem # 支付宝公钥文件 │ │ ├── app_private_key.pem # 应用私钥文件 │ ├── pay.py # 支付文件 └── └── settings.py # 应用配置 ``` ### alipay_public_key.pem ``` -----BEGIN PUBLIC KEY----- 拿应用公钥跟支付宝换来的支付宝公钥 -----END PUBLIC KEY----- ``` ### app_private_key.pem ``` -----BEGIN RSA PRIVATE KEY----- 通过支付宝公钥私钥签发软件签发的应用私钥 -----END RSA PRIVATE KEY----- ``` ### setting.py ```python import os # 应用私钥 APP_PRIVATE_KEY_STRING = open(os.path.join(os.path.dirname(os.path.abspath(__file__)), 'pem', 'app_private_key.pem')).read() # 支付宝公钥 ALIPAY_PUBLIC_KEY_STRING = open(os.path.join(os.path.dirname(os.path.abspath(__file__)), 'pem', 'alipay_public_key.pem')).read() # 应用ID APP_ID = '2016093000631831' # 加密方式 SIGN = 'RSA2' # 是否是支付宝测试环境(沙箱环境)，如果采用真是支付宝环境，配置False DEBUG = True # 支付网关 GATEWAY = 'https://openapi.alipaydev.com/gateway.do' if DEBUG else 'https://openapi.alipay.com/gateway.do' ``` ### pay.py ```python from alipay import AliPay from . import settings # 支付对象 alipay = AliPay( appid=settings.APP_ID, app_notify_url=None, app_private_key_string=settings.APP_PRIVATE_KEY_STRING, alipay_public_key_string=settings.ALIPAY_PUBLIC_KEY_STRING, sign_type=settings.SIGN, debug=settings.DEBUG ) # 支付网关 gateway = settings.GATEWAY ``` ### \__init__.py ```python # 包对外提供的变量 from .pay import gateway, alipay ``` ### 补充：在自己项目的配置文件中配置支付宝回调接口：settings.py | dev.py ```python # 上线后必须换成公网地址 # 后台基URL BASE_URL = 'http://127.0.0.1:8000' # 前台基URL LUFFY_URL = 'http://127.0.0.1:8080' # 支付宝同步异步回调接口配置 # 后台异步回调接口 NOTIFY_URL = BASE_URL + "/order/success/" # 前台同步回调接口，没有 / 结尾 RETURN_URL = LUFFY_URL + "/pay/success" ``` ## 后台 - 支付接口 ### 路由：order/urls.py ```python from django.urls import path, include from utils.router import router from . import views """ 1）支付接口(需要登录认证：是谁)：前台提交商品等信息，得到支付链接 post方法 分析：支付宝回调 同步：get给前台 => 前台可以在收到支付宝同步get回调时，ajax异步在给消息同步给后台，也采用get，后台处理前台的get请求 异步：post给后台 => 后台直接处理支付宝的post请求 2）支付回调接口(不需要登录认证：哪个订单(订单信息中有非对称加密)、支付宝压根不可能有你的token)： get方法：处理前台来的同步回调（不一定能收得到，所有不能在该方法完成后台订单状态等信息操作） post方法：处理支付宝来的异步回调 3）订单状态确认接口：随你前台任何时候来校验订单状态的接口 """ # 支付接口(生成订单) router.register('pay', views.PayViewSet, 'pay') urlpatterns = [ path('', include(router.urls)), path('success/', views.SuccessViewSet.as_view({'get': 'get', 'post': 'post'})) ] ``` ### 模型表：order/models.py ```python """ class Order(models.Model): # 主键、总金额、订单名、订单号、订单状态、创建时间、支付时间、流水号、支付方式、支付人(外键) - 优惠劵(外键，可为空) pass class OrderDetail(models.Model): # 订单号(外键)、商品(外键)、实价、成交价 - 商品数量 pass """ ``` ```python from django.db import models from user.models import User from course.models import Course class Order(models.Model): """订单模型""" status_choices = ( (0, '未支付'), (1, '已支付'), (2, '已取消'), (3, '超时取消'), ) pay_choices = ( (1, '支付宝'), (2, '微信支付'), ) subject = models.CharField(max_length=150, verbose_name="订单标题") total_amount = models.DecimalField(max_digits=10, decimal_places=2, verbose_name="订单总价", default=0) out_trade_no = models.CharField(max_length=64, verbose_name="订单号", unique=True) trade_no = models.CharField(max_length=64, null=True, verbose_name="流水号") order_status = models.SmallIntegerField(choices=status_choices, default=0, verbose_name="订单状态") pay_type = models.SmallIntegerField(choices=pay_choices, default=1, verbose_name="支付方式") pay_time = models.DateTimeField(null=True, verbose_name="支付时间") user = models.ForeignKey(User, related_name='order_user', on_delete=models.DO_NOTHING, db_constraint=False, verbose_name="下单用户") created_time = models.DateTimeField(auto_now_add=True, verbose_name='创建时间') class Meta: db_table = "luffy_order" verbose_name = "订单记录" verbose_name_plural = "订单记录" def __str__(self): return "%s - ￥%s" % (self.subject, self.total_amount) @property def courses(self): data_list = [] for item in self.order_courses.all(): data_list.append({ "id": item.id, "course_name": item.course.name, "real_price": item.real_price, }) return data_list class OrderDetail(models.Model): """订单详情""" order = models.ForeignKey(Order, related_name='order_courses', on_delete=models.CASCADE, db_constraint=False, verbose_name="订单") course = models.ForeignKey(Course, related_name='course_orders', on_delete=models.CASCADE, db_constraint=False, verbose_name="课程") price = models.DecimalField(max_digits=6, decimal_places=2, verbose_name="课程原价") real_price = models.DecimalField(max_digits=6, decimal_places=2, verbose_name="课程实价") class Meta: db_table = "luffy_order_detail" verbose_name = "订单详情" verbose_name_plural = "订单详情" def __str__(self): try: return "%s的订单：%s" % (self.course.name, self.order.out_trade_no) except: return super().__str__() ``` ### 支付接口类：order/views.py ```python from rest_framework.viewsets import GenericViewSet, ViewSet from rest_framework.mixins import CreateModelMixin from rest_framework.permissions import IsAuthenticated from rest_framework.response import Response from . import models, serializers # 支付接口 class PayViewSet(GenericViewSet, CreateModelMixin): permission_classes = [IsAuthenticated] queryset = models.Order.objects.all() serializer_class = serializers.PaySerializer # 重写create方法，返回pay_url，pay_url是在serializer对象中，所以要知道serializer def create(self, request, *args, **kwargs): serializer = self.get_serializer(data=request.data, context={'request': request}) serializer.is_valid(raise_exception=True) self.perform_create(serializer) return Response(serializer.context['pay_url']) ``` ### 支付接口序列化类：model/serializers ```python from rest_framework import serializers from . import models from course.models import Course from rest_framework.exceptions import ValidationError from django.conf import settings class PaySerializer(serializers.ModelSerializer): # 要支持单购物和群购物(购物车)，前台要提交 课程主键(们) courses = serializers.PrimaryKeyRelatedField(queryset=Course.objects.all(), write_only=True, many=True) class Meta: model = models.Order fields = ('subject', 'total_amount', 'pay_type', 'courses') extra_kwargs = { 'total_amount': { 'required': True }, 'pay_type': { 'required': True }, } # 订单总结校验 def _check_total_amount(self, attrs): courses = attrs.get('courses') total_amount = attrs.get('total_amount') total_price = 0 for course in courses: total_price += course.price if total_price != total_amount: raise ValidationError('total_amount error') return total_amount # 生成订单号 def _get_out_trade_no(self): import uuid code = '%s' % uuid.uuid4() return code.replace('-', '') # 获取支付人 def _get_user(self): return self.context.get('request').user # 获取支付链接 def _get_pay_url(self, out_trade_no, total_amount, subject): from libs import iPay order_string = iPay.alipay.api_alipay_trade_page_pay( out_trade_no=out_trade_no, total_amount=float(total_amount), # 只有生成支付宝链接时，不能用Decimal subject=subject, return_url=settings.RETURN_URL, notify_url=settings.NOTIFY_URL, ) pay_url = iPay.gateway + '?' + order_string # 将支付链接存入，传递给views self.context['pay_url'] = pay_url # 入库(两个表)的信息准备 def _before_create(self, attrs, user, out_trade_no): attrs['user'] = user attrs['out_trade_no'] = out_trade_no def validate(self, attrs): # 1）订单总价校验 total_amount = self._check_total_amount(attrs) # 2）生成订单号 out_trade_no = self._get_out_trade_no() # 3）支付用户：request.user user = self._get_user() # 4）支付链接生成 self._get_pay_url(out_trade_no, total_amount, attrs.get('subject')) # 5）入库(两个表)的信息准备 self._before_create(attrs, user, out_trade_no) # 代表该校验方法通过，进入入库操作 return attrs # 重写入库方法的目的：完成订单与订单详情两个表入库操作 def create(self, validated_data): courses = validated_data.pop('courses') # 订单表入库，不需要courses order = models.Order.objects.create(**validated_data) # 订单详情表入库：只需要订单对象，课程对象(courses要拆成一个个course) for course in courses: models.OrderDetail.objects.create(order=order, course=course, price=course.price, real_price=course.price) # 先循环制造数据列表[{}, ..., {}]，用群增完成入库 bulk_create()，效率高 return order ``` ## 前台 - 支付生成页面 ### 课程主页或是详情页或者搜索页 ```vue ``` ## 前台 - 支付成功的回调页面 ### router/index.js ```js import PaySuccess from '../views/PaySuccess.vue' // ... const routes = [ // ... { path: '/pay/success', name: 'pay-success', component: PaySuccess }, ]; ``` ### 同步回调的参数 ```javascript ` charset=utf-8& out_trade_no=7f7c7d12d57d45b693e1b49a6b01e1dd& method=alipay.trade.page.pay.return& total_amount=39.00& sign=FUmceqiNMWvxcD%2BUPCHiOTaEwlJ%2FXIXL5UwZWOSI1TwRjPIZVzjRLB4j2G5CQpn472JO8X%2BwMx04dHqjLxqLcY3TRu0XurQ%2FwKTNpyfDrtNuNv0rfGPuVHw52y3blbS7%2FKFVsWryw4%2BBuF2fCrJ4qWH8Zg14Rct7qoMbu73N74WkQtDyzXefiKDbkMMRMfLbelE9TFyeIeygeMId8%2B58mcJMUOh6aQqwpr9bzuBbfJ17fkqU%2F0ys9zGr%2FlDtLL7aAh6BPViqZN%2F9T7byCoferD1BhcSzJNR6V6VuhOdTq8iEaH2XgJT9aIiyHgg3GT1taBBvZX2gK41FSmkguk%2BfsA%3D%3D& trade_no=2020030722001464020500585462& auth_app_id=2016093000631831& version=1.0& app_id=2016093000631831& sign_type=RSA2& seller_id=2088102177958114& timestamp=2020-03-07%2014%3A47%3A48 ` // 同步回调没与订单状态 ``` ### views/PaySuccess.vue ```vue ``` ## 后台 - 支付成功的回调接口 ```python from utils.logging import logger # 支付回调接口 class SuccessViewSet(ViewSet): authentication_classes = () permission_classes = () # 支付宝同步回调给前台，在同步通知给后台处理 def get(self, request, *args, **kwargs): # return Response('后台已知晓，Over！！！') # 不能在该接口完成订单修改操作 # 但是可以在该接口中校验订单状态(已经收到支付宝post异步通知，订单已修改)，告诉前台 # print(type(request.query_params)) # django.http.request.QueryDict # print(type(request.query_params.dict())) # dict out_trade_no = request.query_params.get('out_trade_no') try: models.Order.objects.get(out_trade_no=out_trade_no, order_status=1) return APIResponse(result=True) except: return APIResponse(1, 'error', result=False) # 支付宝异步回调处理 def post(self, request, *args, **kwargs): try: result_data = request.data.dict() out_trade_no = result_data.get('out_trade_no') signature = result_data.pop('sign') from libs import iPay result = iPay.alipay.verify(result_data, signature) if result and result_data["trade_status"] in ("TRADE_SUCCESS", "TRADE_FINISHED"): # 完成订单修改：订单状态、流水号、支付时间 models.Order.objects.filter(out_trade_no=out_trade_no).update(order_status=1) # 完成日志记录 logger.warning('%s订单支付成功' % out_trade_no) return Response('success') else: logger.error('%s订单支付失败' % out_trade_no) except: pass return Response('failed') ```