python 支付宝支付
楼下安同学 人气:0为什么使用三方支付？
再没有三方支付平台之前，用户发起支付请求的时候，用户要去和银行签约(转账)，特别的不方便，为了解决这些问题，就有了三方支付，三方平台去完成签约，给用户节省时间。
支付宝支付的流程
商户拿到支付宝的公钥、自己的私钥（私钥加密、公钥解密），用私钥请求支付宝，支付宝解密、验签、进行支付处理，支付宝将处理的返回值传给商户，当支付成功后，返还给商户订单号、金额、时间戳等消息，支付失败后同样给商户反馈结果。
配置流程
1、获取APPID
支付宝开放平台:https://open.alipay.com/
登录支付宝开放平台–>点击控制台
点击沙箱(复制APPID)
2、在线生成密钥
点击文档，找到开发助手，点击在线加密。
获取私钥
3、获取公钥
点击应用公钥
生成公钥
现在已经拿到了需要的公钥。
python项目中集成支付宝
构建支付类
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",
}
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)
实例化类
def init_alipay():
# 初始化Alipay
alipay = AliPay(
appid="appid",
app_notify_url="回调地址",
return_url="回调地址",
app_private_key_path="私钥相对路径",
alipay_public_key_path="公钥相对路径",
debug=True # 支付环境
)
return alipay
API
async def get(self):
alipay = init_alipay()
# 传一个标题 订单号 订单价格
params = alipay.direct_pay("三方广告平台", order_no, money)
url = f"https://openapi.alipaydev.com/gateway.do?{params}"
return self.write(ret_json(url))
# 构建一个回调地址,用于支付成功后回调,在回调地址中可以获取订单号(out_trade_no)、金额(total_amount)、时间戳(timestamp),然后进行处理业务逻辑。
总结
支付包有自己的接口文档，以上是我在python环境下配置的，可以直接使用
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