python调用支付宝支付接口详细示例—附带Django demo代码

-----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 json      class 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 = appid          self.app_notify_url = app_notify_url          self.app_private_key_path = app_private_key_path          self.app_private_key = None          self.return_url = return_url          with open(self.app_private_key_path) as fp:              self.app_private_key = RSA.importKey(fp.read())          self.alipay_public_key_path = alipay_public_key_path          with 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_url              data["return_url"] = self.return_url            return data        def 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_string        def 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_key          signer = 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 sign        def _verify(self, raw_content, signature):          # 开始计算签名          key = self.alipay_public_key          signer = PKCS1_v1_5.new(key)          digest = SHA256.new()          digest.update(raw_content.encode("utf8"))          if signer.verify(digest, decodebytes(signature.encode("utf8"))):              return True          return False        def 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 views      urlpatterns = [      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 AliPay      def 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AliPay      alipay = 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