Python之支付宝支付
正式环境:用营业执照,申请商户号,appid
基于支付宝的测试环境:https://openhome.alipay.com/platform/appDaily.htm?tab=info
支付宝提供接口:给商户使用,收钱
-Java,php,C#的demo,没有python的demo(git有人封装了)
需要安装模块:pip3 install pycryptodome（进行一些加密算法）
注：需要先下载别人封装好的Demo！！！
文件路径图：
视图层：
from django.shortcuts import render, redirect, HttpResponse
from utils.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 = ""
# 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://42.56.89.12:80/page2/"
# GET请求，用于页面的跳转展示
return_url = "http://42.56.89.12:80/page2/"
merchant_private_key_path = "keys/app_private_2048.txt"
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
query_params = alipay.direct_pay(
subject="充气娃娃", # 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
return redirect(pay_url) def page2(request):
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) sign = post_dict.pop('sign', None)
status = alipay.verify(post_dict, sign)
print('POST验证', status)
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')
模板层：
<!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>
路由层：
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),
]
demo代码：
utils下的pay.py文件
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)