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這篇文章將為大家詳細(xì)講解有關(guān)python如何搭建支付寶三方支付,小編覺得挺實(shí)用的,因此分享給大家做個(gè)參考,希望大家閱讀完這篇文章后可以有所收獲。
??再?zèng)]有三方支付平臺(tái)之前,用戶發(fā)起支付請(qǐng)求的時(shí)候,用戶要去和銀行簽約(轉(zhuǎn)賬),特別的不方便,為了解決這些問題,就有了三方支付,三方平臺(tái)去完成簽約,給用戶節(jié)省時(shí)間。
??商戶拿到支付寶的公鑰、自己的私鑰(私鑰加密、公鑰解密),用私鑰請(qǐng)求支付寶,支付寶解密、驗(yàn)簽、進(jìn)行支付處理,支付寶將處理的返回值傳給商戶,當(dāng)支付成功后,返還給商戶訂單號(hào)、金額、時(shí)間戳等消息,支付失敗后同樣給商戶反饋結(jié)果。
支付寶開放平臺(tái):https://open.alipay.com/
登錄支付寶開放平臺(tái)–>點(diǎn)擊控制臺(tái)
點(diǎn)擊沙箱(復(fù)制APPID)
點(diǎn)擊文檔,找到開發(fā)助手,點(diǎn)擊在線加密。
獲取私鑰
點(diǎn)擊應(yīng)用公鑰
生成公鑰
現(xiàn)在已經(jīng)拿到了需要的公鑰。
構(gòu)建支付類
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: """ 支付寶支付接口(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", } 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) 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")) quoted_string = "&".join("{0}={1}".format(k, quote_plus(v)) for k, v in unsigned_items) 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) 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): key = self.app_private_key signer = PKCS1_v1_5.new(key) signature = signer.sign(SHA256.new(unsigned_string)) sign = encodebytes(signature).decode("utf8").replace("\n", "") return sign def _verify(self, raw_content, signature): 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: data.pop("sign_type") unsigned_items = self.ordered_data(data) message = "&".join(u"{}={}".format(k, v) for k, v in unsigned_items) return self._verify(message, signature)
實(shí)例化類
def init_alipay(): # 初始化Alipay alipay = AliPay( appid="appid", app_notify_url="回調(diào)地址", return_url="回調(diào)地址", app_private_key_path="私鑰相對(duì)路徑", alipay_public_key_path="公鑰相對(duì)路徑", debug=True # 支付環(huán)境 ) return alipay
API
async def get(self): alipay = init_alipay() # 傳一個(gè)標(biāo)題 訂單號(hào) 訂單價(jià)格 params = alipay.direct_pay("三方廣告平臺(tái)", order_no, money) url = f"https://openapi.alipaydev.com/gateway.do?{params}" return self.write(ret_json(url)) # 構(gòu)建一個(gè)回調(diào)地址,用于支付成功后回調(diào),在回調(diào)地址中可以獲取訂單號(hào)(out_trade_no)、金額(total_amount)、時(shí)間戳(timestamp),然后進(jìn)行處理業(yè)務(wù)邏輯。
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