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 urllib.parse import urlparse, parse_qs from base64 import decodebytes, encodebytes import json import requests 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(" ", "") 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) #请求支付宝退款接口 def api_alipay_trade_refund(self, refund_amount, out_trade_no=None, trade_no=None, **kwargs): biz_content = { "refund_amount": refund_amount } biz_content.update(**kwargs) if out_trade_no: biz_content["out_trade_no"] = out_trade_no if trade_no: biz_content["trade_no"] = trade_no data = self.build_body("alipay.trade.refund", biz_content) url = self.__gateway + "?" + self.sign_data(data) r = requests.get(url) html = r.content.decode("utf-8") return html
这个是pay.py 文件 这个工具类
然后导入这个工具类
#支付方法 from .pay import AliPay #第三方支付 def get_ali_object(): # 沙箱环境地址：https://openhome.alipay.com/platform/appDaily.htm?tab=info app_id = "2016092500595776" # APPID （沙箱应用） # 支付完成后，支付偷偷向这里地址发送一个post请求，识别公网IP,如果是 192.168.20.13局域网IP ,支付宝找不到，def page2() 接收不到这个请求 notify_url = "http://localhost:8000/md_admin/alipayreturn" # 支付完成后，跳转的地址。 return_url = "http://localhost:8080/user_center_order.html" merchant_private_key_path = "C:/Users/dell/www/md/keys/alipay_private_2048.txt.txt" # 应用私钥 alipay_public_key_path = "C:/Users/dell/www/md/keys/alipay_public_2048.txt" # 支付宝公钥 alipay = AliPay( appid=app_id, app_notify_url=notify_url, return_url=return_url, app_private_key_path=merchant_private_key_path, alipay_public_key_path=alipay_public_key_path, # 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 debug=True, # 默认False, ) return alipay def alipay_return(request): alipay = get_ali_object() params = request.GET.dict() sign = params.pop('sign', None) status = alipay.verify(params, sign) print('==================开始==================') print('GET验证', status) print('==================结束==================') return HttpResponse('支付成功') #退款 class Refund(APIView): def post(self,request): # 根据当前用户的配置，生成URL，并跳转。 money = float(request.POST.get('price')) orderno = request.POST.get('orderno') #实例化支付类 alipay = get_ali_object() #调用退款方法 order_string = alipay.api_alipay_trade_refund( #订单号，一定要注意，这是支付成功后返回的唯一订单号 out_trade_no=str(orderno), #退款金额，注意精确到分，不要超过订单支付总金额 refund_amount=money, #回调网址 notify_url='http://localhost:8000/md_admin/alipayreturn' ) return HttpResponse(order_string)
# 支付
class Page(APIView):
def post(self,request):
# 根据当前用户的配置，生成URL，并跳转。
money = float(request.POST.get('price'))
print("金钱",money)
orderno = request.POST.get('orderno')
print("订单",orderno)
alipay = get_ali_object()
# 生成支付的url
query_params = alipay.direct_pay(
subject="test", # 商品简单描述
out_trade_no = str(orderno), # 用户购买的商品订单号（每次不一样） 20180301073422891
total_amount=money, # 交易金额(单位: 元 保留俩位小数)
)
pay_url = "https://openapi.alipaydev.com/gateway.do?{0}".format(query_params) # 支付宝网关地址（沙箱应用）
# 获取订单id
id = request.POST.get("id")
#改变支付状态，以及支付时间
res = Orders.objects.filter(id=int(id)).update(orderstate=1,paytime=datetime.datetime.now())
data = {'name':pay_url}
return Response(data)
这个就是退款 在我前面的文档中有支付的详细介绍
就是这样啦~~~~