python支付宝支付示例详解

本文实例为大家分享了python支付宝支付示例代码，供大家参考，具体内容如下

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)

3、路由设置

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" rel="external nofollow" >
</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

(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

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。