-----BEGIN PUBLIC KEY-----  # 加上这行密钥部分
-----END PUBLIC KEY-----   # 同上

ALIPAY_PUBLIC = os.path.join(BASE_DIR,'alipay_use','alipay','alipay_keys','alipay_public.txt')
APP_PUBLIC = os.path.join(BASE_DIR,'alipay_use','alipay','alipay_keys','app_public.txt')
APP_PRIVATE = os.path.join(BASE_DIR,'alipay_use','alipay','alipay_keys','app_private.txt')

# _*_ coding=utf-8 _*_
from datetime import datetime
from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_v1_5
from Crypto.Hash import SHA256
from urllib.parse import quote_plus
from base64 import decodebytes, encodebytes
import jsonclass AliPay(object):"""支付宝支付接口(PC端支付接口)"""def __init__(self, appid, app_notify_url, app_private_key_path,alipay_public_key_path, return_url, debug=False):self.appid = appidself.app_notify_url = app_notify_urlself.app_private_key_path = app_private_key_pathself.app_private_key = Noneself.return_url = return_urlwith open(self.app_private_key_path) as fp:self.app_private_key = RSA.importKey(fp.read())self.alipay_public_key_path = alipay_public_key_pathwith open(self.alipay_public_key_path) as fp:self.alipay_public_key = RSA.importKey(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):biz_content = {"subject": subject,"out_trade_no": out_trade_no,"total_amount": total_amount,"product_code": "FAST_INSTANT_TRADE_PAY",# "qr_pay_mode":4
        }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):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_urldata["return_url"] = self.return_urlreturn datadef sign_data(self, data):data.pop("sign", None)# 排序后的字符串unsigned_items = self.ordered_data(data)unsigned_string = "&".join("{0}={1}".format(k, v) for k, v in unsigned_items)sign = self.sign(unsigned_string.encode("utf-8"))# ordered_items = self.ordered_data(data)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_stringdef 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_keysigner = PKCS1_v1_5.new(key)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 signdef _verify(self, raw_content, signature):# 开始计算签名key = self.alipay_public_keysigner = PKCS1_v1_5.new(key)digest = SHA256.new()digest.update(raw_content.encode("utf8"))if signer.verify(digest, decodebytes(signature.encode("utf8"))):return Truereturn Falsedef 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)

from django.contrib import admin
from django.conf.urls import url
from app01 import viewsurlpatterns = [url('admin/', admin.site.urls),url('index/', views.index),url('result/', views.pay_result),  # 支付宝处理完成后回调的get请求路由url('update_order/', views.update_order), # 支付宝处理完成后回调的post请求路由
]

import time
from urllib.parse import parse_qs
from django.conf import settings
from django.shortcuts import render, redirect, HttpResponse
from django.views.decorators.csrf import csrf_exempt
from alipay_use.alipay.alipay import AliPaydef aliPay():obj = AliPay(appid="2016100100642208",                              # 支付宝沙箱里面的APPID，需要改成你自己的app_notify_url="http://129.211.29.98/update_order/",  # 如果支付成功，支付宝会向这个地址发送POST请求（校验是否支付已经完成），此地址要能够在公网进行访问，需要改成你自己的服务器地址return_url="http://129.211.29.98/result/",            # 如果支付成功，重定向回到你的网站的地址。需要你自己改，这里是我的服务器地址alipay_public_key_path=settings.ALIPAY_PUBLIC,  # 支付宝公钥app_private_key_path=settings.APP_PRIVATE,      # 应用私钥debug=True,  # 默认False,True表示使用沙箱环境测试
    )# 优化:在settings里面的设置后使用# obj = AliPay(#     appid=settings.APPID,#     app_notify_url=settings.NOTIFY_URL,#     return_url=settings.RETURN_URL,#     alipay_public_key_path=settings.PUB_KEY_PATH,#     app_private_key_path=settings.PRI_KEY_PATH,#     debug=True,# )return obj@csrf_exempt
def index(request):if request.method == "GET":return render(request, 'index.html')# 实例化SDK里面的类AliPayalipay = aliPay()# 对购买的数据进行加密money = float(request.POST.get('price'))  # 保留俩位小数  前端传回的数据out_trade_no = "x2" + str(time.time())  # 商户订单号   # 订单号可以有多中生成方式，可以百度一下# 1. 在数据库创建一条数据：状态（待支付）
query_params = alipay.direct_pay(subject="充气式Saber",  # 商品简单描述 这里一般是从前端传过来的数据out_trade_no=out_trade_no,  # 商户订单号  这里一般是从前端传过来的数据total_amount=money,  # 交易金额(单位: 元 保留俩位小数)   这里一般是从前端传过来的数据
    )# 拼接url，转到支付宝支付页面pay_url = "https://openapi.alipaydev.com/gateway.do?{}".format(query_params)return redirect(pay_url)@csrf_exempt
def update_order(request):"""支付成功后，支付宝向该地址发送的POST请求（用于修改订单状态）:param request::return:"""if request.method == 'POST':body_str = request.body.decode('utf-8')post_data = parse_qs(body_str)post_dict = {}for k, v in post_data.items():post_dict[k] = v[0]alipay = aliPay()sign = post_dict.pop('sign', None)status = alipay.verify(post_dict, sign)if status:# 1.修改订单状态out_trade_no = post_dict.get('out_trade_no')print(out_trade_no)# 2. 根据订单号将数据库中的数据进行更新return HttpResponse('支付成功')else:return HttpResponse('支付失败')return HttpResponse('')@csrf_exempt
def pay_result(request):"""支付完成后，跳转回的地址:param request::return:"""params = request.GET.dict()sign = params.pop('sign', None)alipay = aliPay()status = alipay.verify(params, sign)if status:return HttpResponse('支付成功')return HttpResponse('支付失败')

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>Title</title>
</head>
<body><form action="" method="post"><input type="text" name="price"><input type="submit">
</form></body>
</html>

--pycryptodome
--urllib
--base64