一 .Django+Alipay(支付宝支付使用)和微信支付

一. 支付宝支付使用 

1. 支付宝 申请  支付流程 (公钥和私钥)

https://pay.weixin.qq.com/static/applyment_guide/applyment_index.shtml     微信支付开放平台


支付宝  支付
https://openhome.alipay.com/platform/appDaily.htm?tab=info  蚂蚁金服支付开放平台
https://docs.open.alipay.com/291/105971#Krqvg   蚂蚁金服支付开放平台开发者文档
a. 去支付宝申请 
            - 正式：营业执照
            - 测试：沙箱测试环境
                    APPID：2016082500309412
                    买家：
                              nbjsag5718@sandbox.com
                        
        b. 开发程序
            SDK
                - 官方
                - github
                    pay.py 
                    依赖：pip3 install pycryptodome
            
            公钥私钥：
                - 应用公钥
                    - 支付宝公钥
                - 应用私钥
                

支付包支付 依赖模块
pip3 install pycryptodome       算法加密模块     

支付包支付使用算法模块  ---------RSA

https://docs.open.alipay.com/291/106097/        生成密钥：快速生成RSA私钥公钥
     

2. 支付(django支付代码流程案例)

urls

from django.conf.urls import url
from django.contrib import admin
from app01 import views
urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^index/', views.index),
    url(r'^pay_result/', views.pay_result),
    url(r'^update_order/', views.update_order),
]
templates/index.html

<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
    <form method="post">
        {% csrf_token %}
        <input type="text" name="price" placeholder="请输入要支付的金额">
        <input type="submit" value="支付">
    </form>
</body>
</html>


 支付宝支付接口(PC端支付接口) utils/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 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 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("
", "")
        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)






views.py

from django.shortcuts import render,redirect,HttpResponse
from django.views.decorators.csrf import csrf_exempt  
from utils.pay import AliPay    #   引入 支付加密等 接口  方法      支付宝支付接口(PC端支付接口)
import time
from django.conf import settings


# APPID = "2016082500309412"
# NOTIFY_URL = "http://47.98.134.86:80/update_order/"
# RETURN_URL = "http://47.98.134.86:80/pay_result/"
# PRI_KEY_PATH = "keys/app_private_2048.txt"
# PUB_KEY_PATH = "keys/alipay_public_2048.txt"



def aliPay():
    obj = AliPay(
    
    =settings.APPID,
        app_notify_url=settings.NOTIFY_URL,  # 如果支付成功，支付宝会向这个地址发送POST请求（校验是否支付已经完成） （47.98.134.86 必须要公网ip）

        return_url=settings.RETURN_URL,  # 如果支付成功，重定向回到你的网站的地址。( http://localhost:8080) 可以是局网

        alipay_public_key_path=settings.PUB_KEY_PATH,  # 支付宝 公钥
        app_private_key_path=settings.PRI_KEY_PATH,  # 应用私钥
        debug=True,  # 默认False,     表示测试环境
    )
    return obj

def index(request):
    if request.method == 'GET':
        return render(request,'index.html')

    alipay = aliPay()  #实例化支付加密

    money = float(request.POST.get('price'))   # 随机订单号

    out_trade_no = "x2" + str(time.time())
    # 1. 在数据库创建一条数据：状态（待支付）


     # 对购买的数据进行加密
    query_params = alipay.direct_pay(
        subject="超级娃娃哈哈哈哈哈",  # 商品简单描述
        out_trade_no= out_trade_no,  # 商户订单号
        total_amount=money,  # 交易金额(单位: 元 最多保留俩位小数 )
    )


    pay_url = "https://openapi.alipaydev.com/gateway.do?{}".format(query_params)   # url+商品价钱+价钱 拼接

    return redirect(pay_url)



# //支付完成的响应 校验 
def pay_result(request):
    """
    支付完成后，跳转回的地址
    :param request:
    :return:
    """
    params = request.GET.dict()
    sign = params.pop('sign', None)    # url中路径中的签名

    alipay = aliPay()

    status = alipay.verify(params, sign)         # 校验验证
    if status:
        return HttpResponse('支付成功')
    return HttpResponse('支付失败')



# 偷偷返回回来     获取的订单号
@csrf_exempt
def update_order(request):
    """
    支付成功后，支付宝向该地址发送的POST请求（用于修改订单状态）
    :param request:
    :return:
    """
    if request.method == 'POST':
        from urllib.parse import parse_qs

        body_str = request.body.decode('utf-8')    # 解析请求体中的数据
        post_data = parse_qs(body_str)   

        post_dict = {}
        for k, v in post_data.items():
            post_dict[k] = v[0]
        alipay = aliPay()


        sign = post_dict.pop('sign', None)
        status = alipay.verify(post_dict, sign)   #对数据的校验
        if status:
            # 修改订单状态
            out_trade_no = post_dict.get('out_trade_no')
            print(out_trade_no)
            # 2. 根据订单号将数据库中的数据进行更新
            return HttpResponse('支付成功')
        else:
            return HttpResponse('支付失败')
    return HttpResponse('1111111111111111111111')






models

from django.db import models
class Order(models.Model):

    title = models.CharField(max_length=32)
    order_num = models.CharField(max_length=32)
    status_choices = (
        (1,'未支付'),
        (2,'已支付'),
    )
    status = models.IntegerField(choices=status_choices,default=1)






 


二 .微信支付使用 


Django实现支付宝付款和微信支付的示例代码  https://www.jb51.net/article/144392.htm


https://blog.csdn.net/lm_is_dc/article/details/82864480      Python+Django实现微信扫码支付流程




        

	      

	    

	  

	  

	    
      
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          原文地址：https://www.cnblogs.com/lovershowtime/p/11699034.html