1、安装crypto
pip install pycryptodome
2、注册账户
https://openhome.alipay.com/platform/appDaily.htm?tab=info
3、使用支付宝秘钥生成器生成秘钥
4、进入秘钥生成器工具
5、填入公钥，支付宝自动生成支付宝公钥
6、将秘钥生成器的两个秘钥文件复制到项目目录下，并把支付宝公钥复制到相同目录下的空txt文件中。
并且将文件名改成英文，文件内容上下添加头尾
-----BEGIN PRIVATE KEY-----
秘钥内容....
-----END PRIVATE KEY-----
7、测试
首先导入接口包
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(" ", "") 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)
代码测试
<!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>
urlpatterns = [
path('admin/', admin.site.urls),
path('page1/', views.page1),
path('index/', views.index),
path('page2/', views.page2),
]
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 = "2016102500754629"
# POST请求，用于最后的检测
notify_url = "http://127.0.0.1:8000/page2/"
# notify_url = "http://www.wupeiqi.com:8804/page2/"
# GET请求，用于页面的跳转展示
return_url = "http://127.0.0.1:8000/page2/"
# return_url = "http://www.wupeiqi.com:8804/page2/"
merchant_private_key_path = "keys/use_private_key.txt"
alipay_public_key_path = "keys/alipay_public_key.txt"
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')
# 发送支付请求,必须是post请求，提交支付金额后重定向至支付网址
def page1(request):
if request.method == "GET":
return render(request, 'index.html')
else:
money = float(request.POST.get('money'))
alipay = ali()
# 生成支付的url
query_params = alipay.direct_pay(
subject="充气式韩红", # 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)
)
# 这里可以将订单存放至数据库，订单号和支付状态等
pay_url = "https://openapi.alipaydev.com/gateway.do?{}".format(query_params)
return redirect(pay_url)
# 支付后或者支付超时后的回调视图，是支付宝发送的POST请求
def page2(request):
if request.method == 'POST':
from urllib.parse import parse_qs
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]
alipay = ali()
sign = post_dict.pop('sign', None)
status = alipay.verify(post_dict, sign)
if status:
# 修改订单状态
out_trade_no = post_dict.get('out_trade_no')
print(out_trade_no)
# 2. 根据订单号将数据库中的数据进行更新
return HttpResponse('支付成功')
else:
return HttpResponse('支付失败')
return HttpResponse('')
8、配置测试参数：修改视图函数中的app_id，查看秘钥地址是否正确等。
9、运行测试，成功
注意问题：
1、以上测试只是在本地进行，没有服务器配置
2、注意秘钥的导入、修改不要出错
3、测试时，如果出现支付宝提示钓鱼网站提示，尝试更换浏览器。