Django调用支付宝接口代码实例详解

支付宝支付

正式环境:用营业执照,申请商户号,appid

测试环境:沙箱环境: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 -应用私钥---自己保存,一定不能丢 -应用公钥---给别人用 -支付宝公钥---支付宝用的 -生成公钥私钥:https://docs.open.alipay.com/291/105971 -把应用公钥配置在支付宝上:应用公钥,配置完成以后,支付宝自动生成一个支付宝公钥 -在程序中:配置应用私钥,支付宝公钥 -如果支付成功,支付宝会回调,但是如果你的服务器挂掉了怎么办? -支付宝24小时以内不定时再给你发,你修改掉订单状态即可 -支付成功,支付宝会有一个get回调,一个post回调:修改订单状态

支付宝接口

from datetime import datetimefrom Crypto.PublicKey import RSAfrom Crypto.Signature import PKCS1_v1_5from Crypto.Hash import SHA256from urllib.parse import quote_plusfrom base64 import decodebytes, encodebytesimport jsonclass 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)

视图函数

from django.shortcuts import render, redirect, HttpResponsefrom utils.pay import AliPayimport jsonimport timedef ali(): # 沙箱环境地址：https://openhome.alipay.com/platform/appDaily.htm?tab=info app_id = '2016092000554611' # 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 alipaydef 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’)

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