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支付宝支付

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标签:event   地址   inf   django   内容   dir   item   com   ==   

支付宝支付

接入支付宝支付流程概述:

测试环境为沙箱环境,沙箱环境地址:https://openhome.alipay.com/platform/appDaily.htm?tab=info

1、接入支付宝支付环境所需配置信息:

1.1、商户号:向支付宝申请得到;

1.2、appid,开发用的,商户的唯一id;

1.3三种密钥(非对称密钥)。

a、应用私钥(商户私钥) b、应用公钥   c、支付宝公钥:在支付宝开发平台配置上应用公钥,自动生成的

注:a/b中的密钥通过https://alipay.open.taobao.com/docs/doc.htm?treeId=291&articleId=105971&docType=1生成
在项目中需要配置的以上a,c两个密钥            

 

2、项目启动后的支付流程:

2.1、生成一个AliPay对象(别人写好的模块),传入appid、get回调地址、post回调地址、商户私钥、支付宝公钥;

2.2、调用该对象的direct_pay()方法,传入商品描述、商品订单号、商品价格,返回一堆字符串,拼接到支付宝网关的后面;

2.3、向支付宝网关发送get请求,看到支付页面,用户付款;

2.4、付款成功后,支付宝会有一个get回调,一个post回调(需要对回调内容进行验签,alipay.verify)

示例:本例采用django框架搭建,此处只给出三方模块 views.py  url.py 和HTML页面

url.py

技术图片
from django.contrib import admin
from django.conf.urls import url
from app01 import views

urlpatterns = [
    url(admin/, admin.site.urls),
    url(r^page1/, views.page1),
    url(r^page2/, views.page2),
]
View Code

 views.py

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from django.shortcuts import render, redirect, HttpResponse

from myutils.pay import AliPay
import json
import time
def ali():
    # 沙箱环境地址:https://openhome.alipay.com/platform/appDaily.htm?tab=info
    app_id = "2016092600599696"

    # 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
    # POST请求,用于最后的检测
    notify_url = "http://192.168.13.145:8007/page2/"
    # GET请求,用于页面的跳转展示
    return_url = "http://192.168.13.145:8007/page2/"
    # 用户私钥  保存在根目录下的key文件夹中
    merchant_private_key_path = "keys/app_private_2048.txt"
    # 支付宝公钥
    alipay_public_key_path = "keys/alipay_public_2048.txt"
    # 生成一个AliPay的对象
    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


def page1(request):
    if request.method == "GET":

        return render(request, page1.html)
    else:
        money = float(request.POST.get(money))
        # 生成一个对象
        alipay = ali()
        # 生成支付的url
        # 对象调用direct_pay
        # 该方法生成一个加密串
        query_params = alipay.direct_pay(
            subject="商品名称",  # 商品简单描述
            out_trade_no="x2" + str(time.time()),  # 商户订单号
            total_amount=money,  # 交易金额(单位: 元 保留俩位小数)
        )

        pay_url = "https://openapi.alipaydev.com/gateway.do?{}".format(query_params)
        print(pay_url)
        # 朝这个地址发get请求
        # from django.http import JsonResponse
        # return JsonResponse({‘status‘:100,‘url‘:pay_url})
        return redirect(pay_url)


def page2(request):
    # 支付宝如果收到用户的支付,支付宝会给我的地址发一个post请求,一个get请求
    alipay = ali()
    if request.method == "POST":
        # 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)
        print(body_str)

        post_data = parse_qs(body_str)
        print(支付宝给我的数据:::---------,post_data)
        post_dict = {}
        for k, v in post_data.items():
            post_dict[k] = v[0]
        print(转完之后的字典,post_dict)
        # 做二次验证
        sign = post_dict.pop(sign, None)
        # 通过调用alipay的verify方法去认证
        status = alipay.verify(post_dict, sign)

        print(POST验证, status)
        if status:
            # 修改自己订单状态
            pass
        return HttpResponse(POST返回)

    else:
        params = request.GET.dict()
        sign = params.pop(sign, None)
        status = alipay.verify(params, sign)
        print(GET验证, status)
        return HttpResponse(支付成功)
View Code

 html

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="dist/css/bootstrap.css">
</head>
<body>
    <form method="POST">
        {% csrf_token %}
        <input type="text" name="money">
        <input type="submit" value="去支付" />
    </form>


<script></script>
</body>
</html>
View Code

 myutils》pay.py (三方模块)

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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)
View Code

 

支付宝支付

标签:event   地址   inf   django   内容   dir   item   com   ==   

原文地址:https://www.cnblogs.com/peng-zhao/p/10656645.html

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