支付相关
支付宝支付介绍
# 线上支付
-支付宝支付
-微信支付:网页版
-云闪付的支付
# 用户把钱打到第三方平台(支付宝,微信)商家账户中----》提现提出来---》手续费
# 必须是商户:企业,有营业执照才能申请支付宝,微信的支付接入
# 用的支付宝的沙箱环境:https://openhome.alipay.com/platform/appDaily.htm?tab=info
# 原来支付宝没有提供python的sdk,第三方有人基于api接口封装了一个sdk
#现在支付宝提供了python的sdk了
# 目前还是用第三方的sdk:https://github.com/fzlee/alipay
# 对称加密和非堆成
# 使用支付宝支付:加密是非对称加密---》支付宝官方提供了工具(https://opendocs.alipay.com/common/02kipl)--》下载用
-公钥:配置在支付宝官方网站上----》生成支付宝公钥---》拿着用
-私钥:拿着用
from alipay import AliPay
app_private_key_string = open("./pri").read()
alipay_public_key_string = open("./pub").read()
alipay = AliPay(
appid="2016092000554611",
app_notify_url=None, # 默认回调 url
app_private_key_string=app_private_key_string,
# 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,
alipay_public_key_string=alipay_public_key_string,
# sign_type="RSA2", # RSA 或者 RSA2
debug=True, # 默认 False
)
# 电脑网站支付,需要跳转到:https://openapi.alipay.com/gateway.do? + order_string
res=alipay.api_alipay_trade_page_pay(
out_trade_no='1000101',
total_amount=float(999), # 只有生成支付宝链接时,不能用Decimal
subject='充气球',
return_url='http://127.0.0.1:8000',
notify_url='http://127.0.0.1:8000',
)
gataway = 'https://openapi.alipaydev.com/gateway.do?'
print(gataway+res)
支付宝支付二次封装
ipay #包名
-pem #存放公钥私钥
alipay_public_key.pem
app_private_key.pem
__init__.py
pay.py #生成一个对象
settings.py #配置文件
init.py
from .pay import alipay
from .settings import GATEWAY
pay.py
from alipay import AliPay
from . import settings
alipay = AliPay(
appid=settings.APP_ID,
app_notify_url=None, # 默认回调 url
app_private_key_string=settings.APP_PRIVATE_KEY_STRING,
# 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,
alipay_public_key_string=settings.ALIPAY_PUBLIC_KEY_STRING,
sign_type=settings.SIGN, # RSA 或者 RSA2
debug=settings.DEBUG, # 默认 False
)
settings.py
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 = '2016092000554611'
# 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?'
订单相关表设计
# 订单表
# 订单详情表 (一个订单有多个订单详情)
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)
# 咱们生成的订单号,唯一,后期改订单状态需要使用这个号
out_trade_no = models.CharField(max_length=64, verbose_name="订单号", unique=True)
# 支付宝有个流水号
trade_no = models.CharField(max_length=64, null=True, verbose_name="流水号")
#订单状态
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")
# db_constraint=False 不建立外键
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__()
生成订单接口
# 下单---》用户要登录---》认证类(自己写,使用内置的:认证类,权限类)
# 前端携带数据发送post请求到后端----》生成订单(待支付状态),生成支付链接---》把支付链接返回给前端---》重定向到支付链接(支付宝地址)--->等待用户支付
# 前端提交的数据格式:
{courses:[1,2],total_amount:'99',pay_type:1,subject:很多课程}
路由
from rest_framework.routers import SimpleRouter
from . import views
router = SimpleRouter()
# 127.0.0.1:8000/api/v1/order/pay
router.register('pay', views.OrderView, 'pay')
urlpatterns = [
]
urlpatterns += router.urls
视图类
from django.shortcuts import render, HttpResponse, redirect
# Create your views here.
import uuid
from libs.ipay import alipay, GATEWAY
# def pay(request):
# price = 1999
# subject = '气球'
# order_id = str(uuid.uuid4())
# res = alipay.api_alipay_trade_page_pay(
# out_trade_no=order_id,
# total_amount=float(price), # 只有生成支付宝链接时,不能用Decimal
# subject=subject,
# return_url='http://127.0.0.1:8000',
# notify_url='http://127.0.0.1:8000',
# )
# pay_url = GATEWAY + res
# return redirect(pay_url)
from rest_framework.viewsets import GenericViewSet
from rest_framework.mixins import CreateModelMixin
from .models import Order
from .serializer import OrderSerializer
from utils.response import APIResponse
from rest_framework_jwt.authentication import JSONWebTokenAuthentication
from rest_framework.permissions import IsAuthenticated
class OrderView(GenericViewSet, CreateModelMixin):
queryset = Order.objects.all()
serializer_class = OrderSerializer
authentication_classes = [JSONWebTokenAuthentication,]
permission_classes = [IsAuthenticated,]
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)
pay_url = serializer.context.get('pay_url')
return APIResponse(pay_url=pay_url)
序列化类
from rest_framework import serializers
from .models import Order, OrderDetail
from course.models import Course
from rest_framework.exceptions import APIException
import uuid
from libs.ipay import alipay, GATEWAY
from django.conf import settings
class OrderSerializer(serializers.ModelSerializer):
# 不是表的字段要重写
# courses=serializers.ListSerializer(required= True,write_only=True)
# 更高级的用法--->[2,3,]--->[id为2的课程对象,id为3的课程对象] 一定要加many=True
# courses = serializers.PrimaryKeyRelatedField(queryset=Course.objects.all(), many=True,required=True, write_only=True)
courses = serializers.PrimaryKeyRelatedField(queryset=Course.objects.all(), write_only=True, many=True)
class Meta:
model = Order
fields = ['courses', 'total_amount', 'pay_type', 'subject']
extra_kwargs = {
'total_amount': {
'required': True,
'write_only': True
},
'pay_type': {
'required': True,
'write_only': True
},
'subject': {
'required': True,
'write_only': True
},
}
def _check_total_amount(self, attrs):
total_amount = float(attrs.get('total_amount'))
# 取出每个课程价格加到一起和这个数字做比较
course_list = attrs.get('courses')
new_total_amount = 0
for course in course_list:
new_total_amount += course.price
if not new_total_amount == total_amount:
raise APIException(detail='传入的价格不合法')
else:
return new_total_amount
def _get_out_trade_no(self):
return str(uuid.uuid4()) # 全局唯一,分布式id的生成方案:雪花算法,美团leaf算法
def _get_user(self):
return self.context.get('request').user
def _get_pay_url(self, out_trade_no, total_amount, subject):
# 生成pay_url,放入到context中
res = 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 = GATEWAY + res
self.context['pay_url'] = pay_url
def _before_create(self, attrs, user, out_trade_no):
# attrs中只有:'courses', 'total_amount', 'pay_type','subject'
attrs['out_trade_no'] = out_trade_no
attrs['user'] = user
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
def create(self, validated_data):
# attrs中只有:'courses', 'total_amount', 'pay_type','subject',out_trade_no,user
course_list = validated_data.pop('courses')
order = Order.objects.create(**validated_data)
for course in course_list:
OrderDetail.objects.create(order=order, course=course, price=course.price, real_price=course.price)
return order
支付成功后端回调接口
# 支付宝:get回调,调前端---》已经写好了---->发送ajax请求,给咱们后端,做一个二次校验(校验订单是否支付)----》后端配合一个get接口,查询订单是否支付
# 支付宝:post回调,调后端---》后端需要配合一个post接口,接受支付宝的post回调,修改订单状态
# 写在一个视图类中-----》支付宝的post回调,我们的视图类能有登录认证吗?---》没有认证,我们信得过吗?验证签名(第三方支付宝sdk提供了,调它方案验证即可)----》修改订单状态
class PaySuccessView(ViewSet):
authentication_classes = []
permission_classes = []
# 给前端做二次校验用
def list(self, resquest):
out_trade_no = resquest.query_params.get('out_trade_no')
order = Order.objects.filter(out_trade_no=out_trade_no, order_status=1).first()
if order:
return APIResponse()
else:
return APIResponse(code=101, msg='暂时还没收到你的付款')
# 给支付宝用的--->必须把项目部署在公网上才能回调成功
def create(self, request):
try:
# post提交的数据(支付宝回调格式:urlencoded,QueryDic)
#
# from django.http.request import QueryDict
#
# print(type(request.data))
# 把QueryDic对象转成真正的dict对象,就可以修改,pop
result_data = request.data.dict()
#我们的订单号
out_trade_no = result_data.get('out_trade_no')
#支付宝的签名
signature = result_data.pop('sign')
from libs.ipay import alipay
result = 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
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)
# 支付宝要的格式就这个格式
return Response('success')
else:
logger.error('%s订单支付失败' % out_trade_no)
except:
pass
return Response('failed')
内网穿透
# 把自己内网的项目,可以被外网访问
https://zhuanlan.zhihu.com/p/370483324