Django实现支付宝支付功能
Django实现支付宝支付功能
效果图
- 登录支付宝开放平台，根据帮助文档，注册相应的服务，并获取相关密钥。
https://opendocs.alipay.com/open/270/105899 - 新建Django项目，结构如图所示
- alipay.py文件用于处理对接支付宝接口，代码如下
# -*- coding: utf-8 -*-
from datetime import datetime
from urllib.parse import quote_plus
# SHA256WithRSA (公钥，私钥)
# md5
from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_v1_5
from Crypto.Hash import SHA256
import base64
import json
class AliPay(object):
"""
创建支付对象，里面是常用的请求参数
"""
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 # 异步通知
self.return_url = return_url # 同步通知
self.app_private_key_path = app_private_key_path
# 加签
with open(self.app_private_key_path) as fp:
self.app_private_key = RSA.importKey(fp.read())
# 验签
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:
# 沙箱网关
self.gateway = "https://openapi.alipaydev.com/gateway.do"
else:
# 正式网关
self.gateway = "https://openapi.alipay.com/gateway.do"
def direct_pay(self, subject, out_trade_no, total_amount, return_url=None, **kwargs):
# 支付
# 业务参数
biz_content = {
"subject": subject, # 标题
"out_trade_no": out_trade_no, # uuid的订单号，只要不重复就可以，appid下不能有重复的
"total_amount": total_amount, # 支付的金额
"product_code": "FAST_INSTANT_TRADE_PAY", # 交易方式：即时到账
}
# 可以传入额外的参数，都更新到这个里面了
biz_content.update(kwargs)
data = self.build_body("alipay.trade.page.pay", biz_content, self.return_url)
return self.sign_data(data)
def direct_query(self,out_trade_no,trade_no):
biz_content = {
"out_trade_no": out_trade_no,
"trade_no": trade_no,
}
data = self.build_body("alipay.trade.query", biz_content)
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) # 删除sign
# 排序后的字符串
unsigned_items = self.ordered_data(data) # 排序，如何对字典排序
# app_id=sad&
# 待签名字符串
unsigned_string = "&".join("{0}={1}".format(k, v) for k, v in unsigned_items)
# 签名
sign = self.sign(unsigned_string.encode("utf-8"))
# 添加上‘’
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 针对biz-content
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
sign = base64.encodestring(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, base64.decodestring(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)
if __name__ == '__main__':
ali = AliPay(app_notify_url='http://127.0.0.1',return_url='http://127.0.0.1',appid='2016073100136733',app_private_key_path='app_private_key',alipay_public_key_path='app_public_key')
print ('https://openapi.alipaydev.com/gateway.do?'+ali.direct_pay(subject='asdsad',total_amount='0.01',out_trade_no='1000000000000000'))
return_data = input('请输入返回的参数\r\n').strip()
d = dict([(item.split('=')) for item in return_data.split('&')])
sign = d.pop('sign')
print (ali.verify(d,sign))
- url.py路由处理
from django.conf.urls import url
from stu import views
urlpatterns = [
url(r'^$',views.index_view),
url(r'^topay/',views.pay_view),
url(r'^checkpay/',views.check_view),
]
- 密钥
alipay_public_key.txt 支付宝密钥
-----BEGIN PUBLIC KEY-----
内容
-----END PUBLIC KEY-----
my_private_key.txt 应用私钥
-----BEGIN RSA PRIVATE KEY-----
内容
-----END RSA PRIVATE KEY-----
my_public_key.txt 应用公钥
-----BEGIN RSA PRIVATE KEY-----
内容
-----END RSA PRIVATE KEY-----
- setting.py添加内容
ALIPAY_PUBLIC = os.path.join(BASE_DIR, 'stu', 'keys', 'alipay_public_key.txt')
APP_PUBLIC = os.path.join(BASE_DIR, 'stu', 'keys', 'my_public_key.txt')
APP_PRIVATE = os.path.join(BASE_DIR, 'stu', 'keys', 'my_private_key.txt')
- view.py处理函数
from django.http import HttpResponseRedirect, HttpResponse
from django.shortcuts import render
# Create your views here.
from paydemo import settings
from utils.alipay import *
import os
url=os.getcwd()
def index_view(request):
return render(request,'index.html')
alipay=AliPay(appid='2016102500756380', app_notify_url='http://10.51.235.67:8000//stu/checkpay/',
app_private_key_path=settings.APP_PRIVATE,
alipay_public_key_path=settings.ALIPAY_PUBLIC,
return_url='http://10.51.235.67:8000/stu/checkpay/',debug=True)
def pay_view(request):
m=request.POST.get('m',0)
import uuid
params=alipay.direct_pay(subject='东阳超市', out_trade_no=uuid.uuid4().hex, total_amount=str(m))
url=alipay.gateway+'?'+params
return HttpResponseRedirect(url)
def check_view(request):
params = request.GET.dict()
sign = params.pop('sign')
# 校验
if alipay.verify(params, sign):
return HttpResponse('支付成功！')
return HttpResponse('支付失败！')
8.index.html页面
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<form action="/stu/topay/" method="post">
{% csrf_token %}
<input type="text" name="m"/>
<input type="submit" value="支付">
</form>
</body>
</html>
