1 alipay.py
#! /usr/bin/env python # -*- 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 base64 import b64encode, b64decode from urllib.parse import quote_plus from urllib.parse import urlparse, parse_qs from urllib.request import urlopen from base64 import decodebytes, encodebytes import json class AliPay(object): """ 支付宝支付接口 """ 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.import_key(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) if __name__ == "__main__": return_url = 'http://47.92.87.172:8000/?total_amount=100.00×tamp=2017-08-15+23%3A53%3A34&sign=e9E9UE0AxR84NK8TP1CicX6aZL8VQj68ylugWGHnM79zA7BKTIuxxkf%2FvhdDYz4XOLzNf9pTJxTDt8tTAAx%2FfUAJln4WAeZbacf1Gp4IzodcqU%2FsIc4z93xlfIZ7OLBoWW0kpKQ8AdOxrWBMXZck%2F1cffy4Ya2dWOYM6Pcdpd94CLNRPlH6kFsMCJCbhqvyJTflxdpVQ9kpH%2B%2Fhpqrqvm678vLwM%2B29LgqsLq0lojFWLe5ZGS1iFBdKiQI6wZiisBff%2BdAKT9Wcao3XeBUGigzUmVyEoVIcWJBH0Q8KTwz6IRC0S74FtfDWTafplUHlL%2Fnf6j%2FQd1y6Wcr2A5Kl6BQ%3D%3D&trade_no=2017081521001004340200204115&sign_type=RSA2&auth_app_id=2016080600180695&charset=utf-8&seller_id=2088102170208070&method=alipay.trade.page.pay.return&app_id=2016080600180695&out_trade_no=20170202185&version=1.0' o = urlparse(return_url) query = parse_qs(o.query) processed_query = {} ali_sign = query.pop("sign")[0] print(ali_sign) alipay = AliPay( appid="2016081500252288", app_notify_url="http://47.94.172.250:8804/api/v1/trade/alipay/", return_url="http://47.94.172.250:8804/api/v1/trade/alipay/", app_private_key_path="./app_private_2048.pem", alipay_public_key_path="./alipay_public_2048.pem", # 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, ) for key, value in query.items(): processed_query[key] = value[0] print(alipay.verify(processed_query, ali_sign)) url = alipay.direct_pay( subject="luffycity", out_trade_no="201702029086", total_amount=100.00, return_url="http://47.94.172.250:8804/api/v1/trade/alipay/" ) print(url) re_url = "https://openapi.alipaydev.com/gateway.do?{data}".format(data=url) print(re_url)
2 python中与支付宝对应的密钥对的生成
miyaodui.py
from Crypto import Random from Crypto.PublicKey import RSA # 伪随机数生成器 random_generator = Random.new().read # rsa算法生成实例 rsa = RSA.generate(2048, random_generator) # 秘钥对的生成 app_private_2048 = rsa.exportKey() with open('app_private_2048.pem', 'wb') as f: f.write(app_private_2048) app_public_2048 = rsa.publickey().exportKey() with open('app_public_2048.pem', 'wb') as f: f.write(app_public_2048)
3 config中的配置文件
settings.py
#! /usr/bin/env python # -*- coding: utf-8 -*- class AlipayConfig(object): # app_id app_id = "2016091400507170" # 商户私钥 merchant_private_key = "" # 支付宝公钥 alipay_public_key = "" # 服务器异步通知页面路径 需http: // 格式的完整路径，不能加?id = 123 这类自定义参数，必须外网可以正常访问 notify_url = "http://项目公网访问地址/alipay.trade.page.pay-JAVA-UTF-8/notify_url.jsp" # 页面跳转同步通知页面路径 需http: // 格式的完整路径，不能加?id = 123 这类自定义参数，必须外网可以正常访问 return_url = "http://项目公网访问地址/alipay.trade.page.pay-JAVA-UTF-8/return_url.jsp" # 签名方式(当前只支持RSA和RSA2) sign_type = "RSA2" # 字符编码格式 charset = "utf-8" # 支付宝网关(如果是线上环境的话, dev 这三个字去掉即可) gateway_url = "https://openapi.alipaydev.com/gateway.do"