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python對接支付寶支付自實現
python對接支付寶支付自實現
# -*- coding: utf-8 -*-
import base64
import json
import urllib.parse
from datetime import datetime
import requests
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives import hashes
from cryptography.hazmat.primitives import serialization
from cryptography.hazmat.primitives.asymmetric import padding
class alipayexception(exception):
def __init__(self, data):
super(alipayexception, self).__init__()
self.data = data
def __str__(self):
return "alipay - {}".format(self.data)
def __unicode__(self):
return u"alipay - {}".format(self.data)
class alipayverifyexception(alipayexception):
def __init__(self, msg, data):
super(alipayverifyexception, self).__init__('alipay verify except - {}:{}'.format(msg, data))
class alipay:
def __init__(self, **kwargs):
:param kwargs:
url: 請求位址
notify_url: 支付寶伺服器主動通知商戶伺服器裡指定的頁面http/https路徑
sign_type: 商戶生成簽名字串所使用的簽名演算法型別，目前支援rsa2和rsa，推薦使用rsa2
self._seller_id = kwargs['seller_id']
self._gateway_url = kwargs['gateway_url']
self._notify_url = kwargs.get('notify_url')
self._sign_type = kwargs.get('sign_type', 'rsa2')
if self._sign_type not in ('rsa', 'rsa2'):
raise exception('alipay sign_type must `rsa` or `rsa2`')
self._charset = 'utf-8'
self._format = 'json'
f.read().encode('utf8'),
none,
default_backend()
with open(kwargs['public_key']) as f:
self._public_key = serialization.load_pem_public_key(
f.read().encode('utf8'),
default_backend()
@property
@property
def seller_id(self):
return self._seller_id
if self._sign_type == 'rsa':
data.encode('utf8'),
padding.pkcs1v15(),
hashes.sha1())
else:
data.encode('utf8'),
padding.pkcs1v15(),
hashes.sha256())
return base64.b64encode(signature).decode('utf8')
def sync_verify(self, method, raw_data):
同步驗籤
:return:
method = method.replace('.', '_') + '_response'
raw_data = raw_data.decode('utf8')
sign_index = raw_data.rfind('sign')
signature = base64.b64decode(raw_data[sign_index + 7: -2])
method_data = raw_data[raw_data.find(method) + len(method) + 2: sign_index - 2]
self._public_key.verify(
signature,
method_data.encode('utf8'),
padding.pkcs1v15(),
hashes.sha256())
def async_verify(self, data):
非同步驗籤
:return:
sign_data = {}
for k, v in data.items():
if k in ('sign', 'sign_type'):
continue
sign_data[k] = v
self._public_key.verify(
base64.b64decode(data['sign']),
'&'.join(['{}={}'.format(item) for item in self.sort_data(sign_data)]).encode('utf8'),
padding.pkcs1v15(),
hashes.sha256())
@staticmethod
def sort_data(data):
return [(k, data[k]) for k in sorted(data.keys())]
def params(self, method, biz_content):
data = ={}'.format(item[0], urllib.parse.quote(item[1])) for item in self.sort_data(data)])
p += '&{}={}}'.format('sign', urllib.parse.quote(sign))
return p
def command(self, method, biz_content):
params = self.params(method, biz_content)
response = requests.get('%s?%s' % (self._gateway_url, params))
response_raw_data = response.content
response_data = response.json()
alipay_response_data = response_data[method.replace('.', '_') + '_response']
if alipay_response_data.get('code', '10000') != '10000':
raise alipayexception(alipay_response_data)
self.sync_verify(method, response_raw_data)
return alipay_response_data
if __name__ == '__main__':
alipay = alipay(**{
'seller_id': '...',
'gateway_url': '',
'notify_url': '...',
'public_key': 'path to public_key.pem'
biz_content = {
'out_trade_no': "111",
'total_amount': 0.01,
'subject': "test",
alipay.command('alipay.trade.precreate', biz_content)
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