支付宝线上支付示例
支付宝线上支付：
a. 去支付宝申请 - 正式：营业执照 - 测试：沙箱测试环境 APPID:2016082500309412 买家： nbjsag5718@sandbox.com 111111 111111 b. 开发程序 SDK - 官方 - github pay.py 依赖： pip install pycryptodome 公钥私钥： - 应用公钥 -支付宝公钥 - 应用私钥
示例目录：
utils/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): # debug=True 表示 测试环境（沙箱）， debug=False 表示生产环境 self.appid = appid self.app_notify_url = app_notify_url self.app_private_key_path = app_private_key_path # 商户私钥的路径 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, # 主题 "out_trade_no": out_trade_no, # 订单号 "total_amount": total_amount, # 总金额 "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)
settings.py
# 支付相关配置 APPID = "2016082500309412" NOTIFY_URL = "http://47.98.134.86:80/update_order/" RETURN_URL = "http://47.98.134.86:80/pay_result/" PRI_KEY_PATH = "keys/app_private_2048.txt" PUB_KEY_PATH = "keys/alipay_public_2048.txt"
models.py
from django.db import models class Order(models.Model): title = models.CharField(max_length=32) order_num = models.CharField(max_length=32) status_choices = ( (1,'未支付'), (2,'已支付'), ) status = models.IntegerField(choices=status_choices,default=1)
views.py
from django.shortcuts import render,redirect,HttpResponse from django.views.decorators.csrf import csrf_exempt from utils.pay import AliPay import time from django.conf import settings def aliPay(): obj = AliPay( appid=settings.APPID, app_notify_url=settings.NOTIFY_URL, # 如果支付成功，支付宝会向这个地址发送POST请求（校验是否支付已经完成；异步接收） return_url=settings.RETURN_URL, # 如果支付成功，重定向回到你的网站的地址。（同步接收） alipay_public_key_path=settings.PUB_KEY_PATH, # 支付宝公钥 路径 app_private_key_path=settings.PRI_KEY_PATH, # 应用私钥 路径 debug=True, # 默认False, ) return obj def index(request): if request.method == 'GET': return render(request,'index.html') alipay = aliPay() # 对购买的数据进行加密 money = float(request.POST.get('price')) out_trade_no = "x2" + str(time.time()) # 1. 在数据库创建一条数据：状态（待支付） query_params = alipay.direct_pay( subject="充气式韩红", # 商品简单描述 out_trade_no= out_trade_no, # 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) # 这个 url 就是支付宝的支付链接 return redirect(pay_url) def pay_result(request): """ 支付完成后，跳转回的地址；return_url :param request: :return: """ params = request.GET.dict() sign = params.pop('sign', None) alipay = aliPay() status = alipay.verify(params, sign) if status: return HttpResponse('支付成功') return HttpResponse('支付失败') @csrf_exempt def update_order(request): """ 支付成功后，支付宝向该地址发送的POST请求（用于修改订单状态）；notify_url :param request: :return: """ 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 = aliPay() 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('success') # 支付成功后，需要向支付宝返回一个 "success" 的字符串 else: return HttpResponse('支付失败') return HttpResponse('')
