文件目录
conf.py
import os
# o_你自己的应用ID
app_id = "***********"
# 支付宝收到用户的支付，会向商户发两个请求，一个get请求，一个post请求
# o_你自己公网服务器处理支付宝回调的POST请求，验证订单
notify_url = "http://39.100.233.226:8000/order/aliback/"
# o_你自己公网服务器处理支付宝回调的GET请求，将订单结果展现给用户
return_url = "http://39.100.233.226:8000/order/aliback/"
# o_你自己的私钥
alipay_private_key_path = os.path.join(os.path.dirname(__file__), 'alipay_private_2048.txt')
# o_你自己的公钥
alipay_public_key_path = os.path.join(os.path.dirname(__file__), 'alipay_public_2048.txt')
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 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)
payinit.py
from .pay import AliPay
import os
from . import conf
def ali_init():
# o_你自己的应用ID
app_id = conf.app_id
# 支付宝收到用户的支付，会向商户发两个请求，一个get请求，一个post请求
# o_你自己公网服务器处理支付宝回调的POST请求，验证订单
notify_url = conf.notify_url
# # o_你自己公网服务器处理支付宝回调的GET请求，将订单结果展现给用户
return_url = conf.return_url
# o_你自己的私钥
alipay_private_key_path = conf.alipay_private_key_path
# o_你自己的公钥
alipay_public_key_path = conf.alipay_public_key_path
alipay = AliPay(
appid=app_id,
app_notify_url=notify_url,
return_url=return_url,
app_private_key_path=alipay_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
alipay_public_2048
-----BEGIN PUBLIC KEY----- # 要用自己的公钥去换ali的公钥
...
-----END PUBLIC KEY-----
alipay_private_2048
-----BEGIN RSA PRIVATE KEY-----
...
-----END RSA PRIVATE KEY-----
后台接口实现
from rest_framework.views import APIView
from utils.APIResponse import APIResponse
from rest_framework_jwt.authentication import JSONWebTokenAuthentication
from rest_framework.permissions import IsAuthenticated
from libs.alipay import payinit
# 根据商品信息生成订单号与支付宝链接
import time
from django.core.cache import cache
class OrderAPIView(APIView):
authentication_classes = [JSONWebTokenAuthentication]
permission_classes = [IsAuthenticated]
def post(self, request, *args, **kwargs):
alipay = payinit.ali_init()
trade_no = str(time.time()).replace('.', '1')
# 考虑信息安全性，订单最终的金额一定是前后台双方校验决定
subject = request.data.get('subject')
money = request.data.get('money')
# 对信息要进行校验
if not (subject and money):
return APIResponse(1, '订单信息有误！')
query_params = alipay.direct_pay(
subject=subject,
out_trade_no=trade_no,
total_amount=money,
)
trade_url = "https://openapi.alipaydev.com/gateway.do?{}".format(query_params)
# 服务器存储订单信息：订单状态 False - 未支付 - mysql中也需要存储 order id no status user_id
cache.set(trade_no, False)
return APIResponse(0, 'ok', {
'trade_no': trade_no,
'trade_url': trade_url
})
from rest_framework.response import Response
from utils.logging import logger
class AlibackAPIView(APIView):
def post(self, request, *args, **kwargs):
# 初始化alipay
alipay = payinit.ali_init()
# 检测是否支付成功
# 去请求体中获取所有返回的数据：状态/订单号
from urllib.parse import parse_qs
body_str = request.body.decode('utf-8')
post_data = parse_qs(body_str)
post_dict = {}
for k, v in post_data.items():
post_dict[k] = v[0]
logger.warning("^_^: %s" % post_dict)
sign = post_dict.pop('sign', None)
# 通过调用alipay的verify方法去二次认证
status = alipay.verify(post_dict, sign)
if status: # 订单状态在此修改
logger.warning("^_^: %s" % post_dict)
pass
return Response('验证成功')
def get(self, request, *args, **kwargs):
'''
支付宝先给你发一个get请求测试你的服务器是否存活,
再发送post请求给你返回真实的数据
'''
# 初始化alipay
alipay = payinit.ali_init()
params = request.GET.dict()
sign = params.pop('sign', None)
status = alipay.verify(params, sign)
print('GET验证', status)
if status:
# 获取订单状态，显示给用户
return Response('支付成功')
