flask 支付宝的使用
1. 需要去官方网页里面登录自己的账号
https://open.alipay.com/
2. 登录后需要保存一些数据
- 进入网址之后进行登录=》控制台=》沙箱
- 保存APPID
- 保存公钥&密钥
3. 安装支付宝模块
pip install python-alipay-sdk --upgrade
pip uninstall PyCrypto
pip uninstall PyCryptodome
pip install PyCryptodome
4. 封装支付宝支付方法
- 创建一个keys/private_key.txt写入私钥
-----BEGIN RSA PRIVATE KEY-----
写入保存到的私钥
-----END RSA PRIVATE KEY-----
- 创建一个keys/public_key.txt写入公钥
-----BEGIN PUBLIC KEY-----
写入保存到的公钥
-----END PUBLIC KEY-----
- 创建一个utlis/pay.py写入代码
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 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 query_pay(self, out_trade_no,return_url=None, **kwargs):
biz_content = {
"out_trade_no": out_trade_no,
# "product_code": "FAST_INSTANT_TRADE_PAY",
# "qr_pay_mode":4
}
biz_content.update(kwargs)
data = self.build_body("alipay.trade.query", 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)
- 封装调用支付方法，下面的app_id需要写入自己保存的APPID
#导入支付基类
from utils.pay import AliPay
#初始化阿里支付对象
def get_ali_object():
# 沙箱环境地址：https://openhome.alipay.com/platform/appDaily.htm?tab=info
app_id = "2021000120615296" # APPID （沙箱应用）
# 支付完成后，支付偷偷向这里地址发送一个post请求，识别公网IP,如果是 192.168.20.13局域网IP ,支付宝找不到，def page2() 接收不到这个请求
notify_url = "http://127.0.0.1:5000/callback"
# 支付完成后，跳转的地址。
return_url = "http://localhost:8080/"
merchant_private_key_path = "./keys/private_key.txt" # 应用私钥
alipay_public_key_path = "./keys/public_key.txt" # 支付宝公钥
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=True, # 默认False,
)
return alipay
- 去蓝图调用
# 支付宝平台
from utils.procom import get_ali_object
@shops_bp.route('/alipay')
def getalipay():
alipay = get_ali_object()
res = alipay.direct_pay(subject='订单：123456', # 商品描述
out_trade_no='66666'), # 用户购买的商品订单号
total_amount = 66.6) # 交易金额
pay_url = f"https://openapi.alipaydev.com/gateway.do?{res}"
# return redirect(pay_url) # 访问是跳转到pay_url页面
return jsonify({'code': 200, 'url': pay_url})
- 前端使用window跳转
window.location.href = url