python实现支付宝支付

通过支付宝沙箱实现支付

提示：https://open.alipay.com/develop/sandbox/app
通过支付宝开放平台获取沙箱公钥及回调接口

文章目录

• 通过支付宝沙箱实现支付
• 沙箱模式-测试
• 一、支付宝实现流程？
• 二、使用步骤
  *
• 1.项目中的配制
• 2.引用支付宝方法
• 总结

沙箱模式-测试

提示：订单支付过程遇到的问题：

支付宝qps限制，
支付宝支付成功后回调失败-》3次重试-》用户付款成功，订单状态没修改支付前把订单号加入队列-》发起支付-》在回调接口中删除队列中的订单号-》队列中存的没回调（定时调用支付宝查询接口，根据返回结果更新数据库状态）

一、支付宝实现流程？

; 二、使用步骤

https://opendocs.alipay.com/common/02kipl
获取自己的密钥与公钥
将公钥复制自定义公钥获取支付宝公钥

1.项目中的配制

安装PyCryptodome：

pip install python-alipay-sdk --upgrade
pip uninstall PyCrypto
pip uninstall PyCryptodome
pip install PyCryptodome

2.引用支付宝方法

在util下面新建pay.py：

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

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)

在util中的comm.py中添加：

from .pay import AliPay

def get_ali_object():

    app_id = "2016093000632803"

    notify_url = "http://localhost:8000/users/notify/"

    return_url = "http://localhost:8000/users/notify/"

    写入定义的公钥密钥
    merchant_private_key_path ="/Users/hanxiaobai/Downloads/python/p7pro/p8/workflow/keys/private_key.txt"
    alipay_public_key_path = "/Users/hanxiaobai/Downloads/python/p7pro/p8/workflow/keys/public_key.txt"

    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,
        debug=True,
    )
    return alipay

调用：

alipay = get_ali_object()

query_params = alipay.direct_pay(
  subject="test",
  out_trade_no='active:'+str(res['id']),
  total_amount=float(res['money']),
)
pay_url = "https://openapi.alipaydev.com/gateway.do?{0}".format(query_params)
return redirect(pay_url)

此时运行展示

总结

提示：这里对文章进行总结：

以上就是今天要讲的内容，本文仅仅简单介绍了支付宝沙箱支付的使用

Original: https://blog.csdn.net/m0_62264368/article/details/124630129
Author: StarEaves.
Title: python实现支付宝支付