Django框架调用支付宝接口（以沙盒为例）

登录支付宝开放平台，根据帮助文档，注册相应的服务，并获取相关密钥。
https://opendocs.alipay.com/open/270/105899
新建Django项目，结构如图所示

alipay.py文件用于处理对接支付宝接口，代码如下

# -*- coding: utf-8 -*-

from datetime import datetime
from urllib.parse import quote_plus
# SHA256WithRSA (公钥，私钥)
# md5
from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_v1_5
from Crypto.Hash import SHA256
import base64

import json


class AliPay(object):
    """
    创建支付对象，里面是常用的请求参数
    """
    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  #  异步通知
        self.return_url = return_url # 同步通知
        self.app_private_key_path = app_private_key_path

        # 加签
        with open(self.app_private_key_path) as fp:
            self.app_private_key = RSA.importKey(fp.read())
       # 验签
        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:
            # 沙箱网关
            self.gateway = "https://openapi.alipaydev.com/gateway.do"
        else:
            # 正式网关
            self.gateway = "https://openapi.alipay.com/gateway.do"

    def direct_pay(self, subject, out_trade_no, total_amount, return_url=None, **kwargs):

        # 支付
        # 业务参数
        biz_content = {
            "subject": subject, # 标题
            "out_trade_no": out_trade_no, # uuid的订单号，只要不重复就可以，appid下不能有重复的
            "total_amount": total_amount, # 支付的金额
            "product_code": "FAST_INSTANT_TRADE_PAY", # 交易方式：即时到账

        }
       # 可以传入额外的参数，都更新到这个里面了
        biz_content.update(kwargs)
        data = self.build_body("alipay.trade.page.pay", biz_content, self.return_url)
        return self.sign_data(data)

    def direct_query(self,out_trade_no,trade_no):
        biz_content = {
            "out_trade_no": out_trade_no,
            "trade_no": trade_no,
        }
        data = self.build_body("alipay.trade.query", biz_content)


        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) # 删除sign
        # 排序后的字符串
        unsigned_items = self.ordered_data(data)  # 排序，如何对字典排序
        # app_id=sad&
        # 待签名字符串
        unsigned_string = "&".join("{0}={1}".format(k, v) for k, v in unsigned_items)
        # 签名
        sign = self.sign(unsigned_string.encode("utf-8"))
        # 添加上‘’
        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 针对biz-content
        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
        sign = base64.encodestring(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, base64.decodestring(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)


if __name__ == '__main__':
    ali = AliPay(app_notify_url='http://127.0.0.1',return_url='http://127.0.0.1',appid='2016073100136733',app_private_key_path='app_private_key',alipay_public_key_path='app_public_key')
    print  ('https://openapi.alipaydev.com/gateway.do?'+ali.direct_pay(subject='asdsad',total_amount='0.01',out_trade_no='1000000000000000'))
    return_data = input('请输入返回的参数\r\n').strip()
    d = dict([(item.split('=')) for item in return_data.split('&')])
    sign = d.pop('sign')
    print (ali.verify(d,sign))

url.py路由处理

from django.conf.urls import url

from stu import views

urlpatterns = [
    url(r'^$',views.index_view),
    url(r'^topay/',views.pay_view),
    url(r'^checkpay/',views.check_view),
]

密钥

alipay_public_key.txt 支付宝密钥
-----BEGIN  PUBLIC KEY-----
内容
-----END  PUBLIC KEY-----
my_private_key.txt 应用私钥

-----BEGIN RSA PRIVATE KEY-----
内容
-----END RSA PRIVATE KEY-----
my_public_key.txt 应用公钥

-----BEGIN RSA PRIVATE KEY-----
内容
-----END RSA PRIVATE KEY-----

setting.py添加内容
ALIPAY_PUBLIC = os.path.join(BASE_DIR, 'stu', 'keys',  'alipay_public_key.txt')
APP_PUBLIC = os.path.join(BASE_DIR, 'stu', 'keys', 'my_public_key.txt')
APP_PRIVATE = os.path.join(BASE_DIR, 'stu', 'keys',  'my_private_key.txt')

view.py处理函数

from django.http import HttpResponseRedirect, HttpResponse
from django.shortcuts import render

# Create your views here.
from paydemo import settings
from utils.alipay import *
import os
url=os.getcwd()

def index_view(request):
    return render(request,'index.html')
alipay=AliPay(appid='2016102500756380', app_notify_url='http://10.51.235.67:8000//stu/checkpay/',
              app_private_key_path=settings.APP_PRIVATE,
              alipay_public_key_path=settings.ALIPAY_PUBLIC,
              return_url='http://10.51.235.67:8000/stu/checkpay/',debug=True)



def pay_view(request):
    m=request.POST.get('m',0)
    import uuid
    params=alipay.direct_pay(subject='东阳超市', out_trade_no=uuid.uuid4().hex, total_amount=str(m))
    url=alipay.gateway+'?'+params
    return HttpResponseRedirect(url)


def check_view(request):
    params = request.GET.dict()
    sign = params.pop('sign')
    # 校验
    if alipay.verify(params, sign):
        return HttpResponse('支付成功！')
    return HttpResponse('支付失败！')

8.index.html页面

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <form action="/stu/topay/" method="post">
        {% csrf_token %}
        <input type="text" name="m"/>
        <input type="submit" value="支付">
    </form>
</body>
</html>

posted @ 2021-05-11 09:55 邓居旺阅读(181) 评论(0) 收藏举报

刷新页面返回顶部

DJWWW

Django框架调用支付宝接口（以沙盒为例）

公告