python-支付宝支付示例
项目演示:
1、输入金额
2、扫码支付:
3、支付完成:
一、注册账号
https://openhome.alipay.com/platform/appDaily.htm?tab=info
二、设置应用公钥
三、代码实现
1、项目结构:
2、把生成的 应用私钥 和 支付宝的公钥 放入keys目录下:
注意:
支付宝公钥
商户私钥
--- 配置商户应用私钥--copy到key目录下
--- 配置支付宝公钥--进入网页-->查看支付宝公钥-->把公钥放到key目录下
但是要做修改:
- alipay_public_2048.txt
- -----BEGIN PUBLIC KEY----- # 加上这行
- 支付宝的公钥
- -----END PUBLIC KEY----- # 同上
- app_private_2048.txt
- -----BEGIN PUBLIC KEY----- #同上
- 应用的私钥
- -----END PUBLIC KEY----- # 同上
3、pay.py 这是从git上找到的支付宝支付接口(PC端支付接口)
- in 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("\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)
- in urls.py
- urlpatterns = [
- url(r'^admin/', admin.site.urls),
- url(r'^page1/', views.page1),
- url(r'^index/', views.index),
- url(r'^page2/', views.page2),
- ]
4、视图设置
- in view.py
- from django.shortcuts import render, redirect, HttpResponse
- from utils.pay import AliPay
- import json
- import time
- def get_ali_object():
- # 沙箱环境地址:https://openhome.alipay.com/platform/appDaily.htm?tab=info
- app_id = "2016091100486897" # APPID (沙箱应用)
- # 支付完成后,支付偷偷向这里地址发送一个post请求,识别公网IP,如果是 192.168.20.13局域网IP ,支付宝找不到,def page2()
- # 接收不到这个请求
- notify_url = "http://47.94.172.250:8804/page2/"
- # 支付完成后,跳转的地址。
- return_url = "http://47.94.172.250:8804/page2/"
- merchant_private_key_path = "keys/app_private_2048.txt" # 应用私钥
- alipay_public_key_path = "keys/alipay_public_2048.txt" # 支付宝公钥
- 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 index(request):
- return render(request,'index.html')
- def page1(request):
- # 根据当前用户的配置,生成URL,并跳转。
- money = float(request.POST.get('money'))
- alipay = get_ali_object()
- # 生成支付的url
- query_params = alipay.direct_pay(
- subject="充气式赵俊明", # 商品简单描述
- out_trade_no="x2" + str(time.time()), # 用户购买的商品订单号(每次不一样) 20180301073422891
- total_amount=money, # 交易金额(单位: 元 保留俩位小数)
- )
- pay_url = "https://openapi.alipaydev.com/gateway.do?{0}".format(query_params) # 支付宝网关地址(沙箱应用)
- return redirect(pay_url)
- def page2(request):
- alipay = get_ali_object()
- 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
- # name&age=123....
- 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]
- # post_dict有10key: 9 ,1
- sign = post_dict.pop('sign', None)
- status = alipay.verify(post_dict, sign)
- print('------------------开始------------------')
- print('POST验证', status)
- print(post_dict)
- out_trade_no = post_dict['out_trade_no']
- # 修改订单状态
- # models.Order.objects.filter(trade_no=out_trade_no).update(status=2)
- print('------------------结束------------------')
- # 修改订单状态:获取订单号
- return HttpResponse('POST返回')
- else:
- params = request.GET.dict()
- sign = params.pop('sign', None)
- status = alipay.verify(params, sign)
- print('==================开始==================')
- print('GET验证', status)
- print('==================结束==================')
- return HttpResponse('支付成功')
5、模板
- in index.html
- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <title>Title</title>
- <link rel="stylesheet" href="dist/css/bootstrap.css">
- </head>
- <body>
- <form action="/page1/" method="POST">
- {% csrf_token %}
- <input type="text" name="money">
- <input type="submit" value="去支付" />
- </form>
- <script></script>
- </body>
- </html>
6、当你全部设置完,代码只需修改三个地方
git项目地址:https://github.com/zhbittt/s5alipay.git
(1)、修改APPID
-- 这是你账号的APPID
-- in views.py
def get_ali_object():
app_id = 'xxxxxxx' #你的账号APPID
================================
(2)、换上你的支付宝公钥
(3)、换上你的应用私钥