Django对接支付宝实现支付宝充值金币功能

落日映苍穹つ 2023-08-17 17:29 84阅读 0赞

很多网站里都有金币、积分之类的虚拟货币，获取这些往往需要充值。那么问题来了，如何在Django中对接支付宝实现支付宝充值金币的功能呢？网上很多资料都是电商的，那些都会带有订单系统之类比较复杂，而充值金币功能不需要实现那么多功能。

# 效果图如下： #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTEzMzA2MQ_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTEzMzA2MQ_size_16_color_FFFFFF_t_70 1]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTEzMzA2MQ_size_16_color_FFFFFF_t_70 2]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTEzMzA2MQ_size_16_color_FFFFFF_t_70 3]

现在就来实现Django对接支付宝支付功能吧！

## 登录支付宝开放平台 ##

点击进入蚂蚁金服开放平台[https://open.alipay.com/platform/home.htm][https_open.alipay.com_platform_home.htm]  
进入支付宝沙箱环境[https://openhome.alipay.com/platform/appDaily.htm?tab=info][https_openhome.alipay.com_platform_appDaily.htm_tab_info]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTEzMzA2MQ_size_16_color_FFFFFF_t_70 4]  
如图，这里是你沙箱环境的配置，左侧沙箱工具有沙箱支付宝安卓版下载，沙箱账号是你的测试账号。

## 下载支付宝开放平台开发助手 ##

[点击打开下载链接][Link 1]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTEzMzA2MQ_size_16_color_FFFFFF_t_70 5]  
打开工具，生成密钥，然后妥善保管好！！  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTEzMzA2MQ_size_16_color_FFFFFF_t_70 6]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTEzMzA2MQ_size_16_color_FFFFFF_t_70 7]

## 保存密钥 ##

![在这里插入图片描述][20190826162900754.png]  
把刚刚那个应用公钥2048重命名为：`pub_2048.txt`，把应用私钥2048重命名为：`private_2048.txt`，把这两个文件放在项目目录下。  
注意：密钥的开始和结束一定要加上如下的字符串！！！

-----BEGIN PRIVATE KEY-----
    这里粘贴里面的密钥
    -----END PRIVATE KEY-----

![在这里插入图片描述][20190826163107977.png]

## 复制支付宝的公钥并保存 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTEzMzA2MQ_size_16_color_FFFFFF_t_70 8]  
把这段支付宝公钥复制，重命名为alipay\_key\_2048.txt，保存到项目目录中，注意加上如下字符串

-----BEGIN PRIVATE KEY-----
    这里粘贴里面的密钥
    -----END PRIVATE KEY-----

## 设置公钥 ##

把刚刚的`pub_2048.txt`里面的字符串复制到如下：

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTEzMzA2MQ_size_16_color_FFFFFF_t_70 9]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTEzMzA2MQ_size_16_color_FFFFFF_t_70 10]

## 调试支付宝支付接口 ##

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 """ 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.import_key(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) def get_alipay_url(app_id, order_sn, order_mount): alipay = AliPay( appid=app_id, app_notify_url="http://127.0.0.1:8000/alipay/return/", app_private_key_path="../trade/keys/private_2048.txt", alipay_public_key_path="../trade/keys/alipay_key_2048.txt", # 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_url="http://127.0.0.1:8000/alipay/return/" ) url = alipay.direct_pay( subject=order_sn, out_trade_no=order_sn, total_amount=order_mount, ) re_url = "https://openapi.alipaydev.com/gateway.do?{data}".format(data=url) return re_url if __name__ == "__main__": url = get_alipay_url( '2016092600597838', '201902923423436', 1.00 ) print(url)

如果输出的url能够打开并且使用沙箱账号支付，说明前面的配置成功了，可以进行视图的编写。

## 设计数据库订单模型 ##

from django.db import models from django.conf import settings from django.utils.encoding import python_2_unicode_compatible from questioning.utils.models import CreatedUpdatedMixin @python_2_unicode_compatible class OrderInfo(CreatedUpdatedMixin, models.Model): ''' 充值订单详情 ''' ORDER_STATUS = ( ('TRADE_SUCCESS', '交易支付成功'), ('TRADE_CLOSED', '未付款交易超时关闭'), ('WAIT_BUYER_PAY', '交易创建'), ('TRADE_FINISHED', '交易结束'), ('paying', '待支付'), ) user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, verbose_name='用户') order_sn = models.CharField(max_length=30, null=True, blank=True, unique=True, verbose_name='订单号') trade_no = models.CharField(max_length=100, unique=True, null=True, blank=True, verbose_name='支付订单号') pay_status = models.CharField(choices=ORDER_STATUS, max_length=40, verbose_name='订单状态', default='paying') order_mount = models.DecimalField(verbose_name="充值金额", max_digits=10, decimal_places=2, default=0.00) class Meta: verbose_name = "充值订单" verbose_name_plural = verbose_name def __str__(self): return self.order_sn

注意充值的金额要设置为`models.DecimalField`货币类型  
然后导入到数据库中

## 视图函数编写 ##

class AlipayView(LoginRequiredMixin, AuthorRequiredMixin, View): """ 支付宝支付 get方法实现支付宝return_url，如果没有实现也无所谓，post同样可以更新状态 post方法实现支付宝notify_url，异步更新 支付宝返回的url如下： #http://127.0.0.1:8000/alipay/return/? # charset=utf-8& # out_trade_no=201902923423436& # method=alipay.trade.page.pay.return& # total_amount=1.00& # sign=CDBMY9NBsp4KICdQoBEVxGWobd0N8y4%2BU09stzUWwlNtLr7ZpELJdM5js20wXv%2FCPp0FGPbRW1YS9DRx0CnKJULZZMqysBUMH2FL39sS0Fgstgy1ydTs7ySXdHziJV0inI%2BDWAsebQqtjk5gQEweUstc%2B%2BnzjdgAulpvWzfJsbknS%2BqUfktSdF2ZOWGhr1CFlfsMFEDS2nzQv4K3E%2BNaeylkzUnRe9M1sjIL%2FYR0wVZ5A3OfHLPf9HzC2B8%2FLu4g7N5Vctkqp2aerDvIkN5SNmDnRGyjOt2b%2BOsLMqG4X06JSsrZT6Ln8PimsrkSOIGbj0gCqscx7BwZfmCQePlCw%3D%3D& # trade_no=2019082622001426981000041778& # auth_app_id=2016092600597838& # version=1.0&app_id=2016092600597838& # sign_type=RSA2& # seller_id=2088102177296610& # timestamp=2019-08-26+13%3A51%3A01 """ def dispatch(self, request, *args, **kwargs): self.alipay = AliPay( appid=settings.ALIPAY_APPID, app_notify_url=settings.APP_NOTIFY_URL, app_private_key_path=settings.APP_PRIVATE_KEY_PATH, alipay_public_key_path=settings.ALIPAY_PUBLIC_KEY_PATH, debug=settings.ALIPAY_DEBUG, return_url=settings.RETURN_URL ) #处理返回的url参数 callback_data = {} for key, value in request.GET.items(): callback_data[key] = value sign = callback_data.pop('sign', None) self.order_sn = callback_data.get('out_trade_no', None) #订单号 self.trade_no = callback_data.get('trade_no', None) #支付宝订单号 # 验证签名 self.verify = self.alipay.verify(callback_data, sign) return super(AlipayView, self).dispatch(request, *args, **kwargs) def get(self, request): """处理支付宝return_url返回""" if self.verify: self.deposit() #返回个人中心页面 return redirect(reverse('users:detail', kwargs={ 'username': request.user.username })) def post(self, request): """ 处理notify_url """ if self.verify: self.deposit() return Response('success') def deposit(self): """充值操作 1.更新用户的金币信息 2.更新订单状态为交易成功 """ # 数据库中查询订单记录 order = OrderInfo.objects.get(order_sn=self.order_sn) order.trade_no = self.trade_no # 支付宝订单号 # 把人民币转换成对应的金币 rmb = order.order_mount money = convert_rmb_to_money(rmb) # 更新用户的金币 order.user.money += Decimal(money) order.user.save() # 订单状态置为交易成功 order.pay_status = 'TRADE_SUCCESS' order.save()

当用户付款成功后，会跳转回来，那个就是return\_url，处理这个的是get方法，用来更新用户的金币和订单。

转载于:https://www.cnblogs.com/PyKK2019/p/11413468.html

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[https_open.alipay.com_platform_home.htm]: https://open.alipay.com/platform/home.htm
[https_openhome.alipay.com_platform_appDaily.htm_tab_info]: https://openhome.alipay.com/platform/appDaily.htm?tab=info
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[Link 1]: https://docs.open.alipay.com/291/105971/
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[20190826162900754.png]: /images/20230808/bc32720f89bb4e798e2e24ca13af89b2.png
[20190826163107977.png]: /images/20230808/d51f9ec92acd479a8de1e03e509feae3.png
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