• python支付宝页面扫码支付


    一、介绍

    基于网上一个支付宝pay.py封装了支付宝API的文件进行的,以下代码只支持网页扫码支付,手机端会提示调用支付宝支付

    #pay文件代码
    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.AlipayAPI.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)

    二、自己封装的调用代码

    import time
    from pay import AliPay
    
    class AlipayApi(object):
        def __init__(self, app_id, notify_url, return_url, merchant_private_key_path, alipay_public_key_path,debug):
            """
            :param app_id:
            :param notify_url:支付宝post回调地址,用来修改订单信息
            :param return_url:支付宝get回调地址,用来给用户展示
            :param merchant_private_key_path:商户的私钥
            :param alipay_public_key_path:支付宝的公钥
            """
            self.app_id = app_id
            self.notify_url = notify_url
            self.return_url = return_url
            self.merchant_private_key_path = merchant_private_key_path
            self.alipay_public_key_path = alipay_public_key_path
            self.debug=debug
            self.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=debug,  # 默认False,
            )
    
        def getAlipayPage(self,subject,total_amount,out_trade_no,):
            """
            :param subject: 商品简单描述
            :param total_amount: 交易总金额(单位: 元 保留俩位小数)
            :param out_trade_no: 商户订单号
            :return: 支付宝支付页面
            """
            query_params = self.alipay.direct_pay(
                subject=subject,
                out_trade_no=out_trade_no,
                total_amount=total_amount,
            )
            if self.debug:
                pay_url = "https://openapi.alipaydev.com/gateway.do?{}".format(query_params)
            else:
                pay_url = "https://openapi.alipay.com/gateway.do?{}".format(query_params)
            return pay_url
    
        def alipayCallbackPost(self,body_str):
            """
            :param body_str: post回调的数据
            :return:
            """
            from urllib.parse import parse_qs
            post_data = parse_qs(body_str)
            post_dict = {}
            for k, v in post_data.items():
                post_dict[k] = v[0]
            # 做二次验证
            sign = post_dict.pop('sign', None)
            # 通过调用alipay的verify方法去认证
            status = self.alipay.verify(post_dict, sign)
            if status:
                # 修改自己订单状态
                return True
            else:
                return False
    
        def alipayCallbackGet(self,params):
            """
            :param params: get回调的数据
            :return:
            """
            dic_params = {k: v for k, v in params.items()}
            sign = dic_params.pop('sign', None)
            status = self.alipay.verify(dic_params, sign)
            if status:
                return True
            else:
                return False
    
    
    if __name__ == '__main__':
        app_id = "填写自己的"
        notify_url = "填写自己的"
        return_url = "填写自己的"
        merchant_private_key_path = "app_private_2048.txt"
        alipay_public_key_path = "alipay_public_2048.txt"
        ali=AlipayApi(app_id=app_id,
                      notify_url=notify_url,
                      return_url=return_url,
                      merchant_private_key_path=merchant_private_key_path,
                      alipay_public_key_path=alipay_public_key_path,
                      debug=True)
    
        subject="充气娃娃"
        out_trade_no="OFG"+str(time.time())
        total_amount=1000
        url=ali.getAlipayPage(subject=subject,out_trade_no=out_trade_no,total_amount=total_amount)
        print(url)

    key文件的格式

    效果图

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  • 原文地址:https://www.cnblogs.com/angelyan/p/11163977.html
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