临近七夕，公司运营想做一个小程序来给我们app引流。后台老大交给我写，写完之后，感觉还是挺简单，跟大家分享下过程。
其他数据的接口没有什么好说的。主要说下微信分享和微信支付的过程
微信分享：
微信文档：
https://developers.weixin.qq.com/miniprogram/dev/api/share/wx.getShareInfo.html
我们设计的是H5页面分享活动，种子群用户活动参与数最大，前端获得shareTicket
异步回调返回iv和encryptedData给我 我来解析获得OPENGID(openGId 为当前群的唯一标识)，以此来判断种子用户
class WXBizDataCrypt: def __init__(self, appId, sessionKey): self.appId = appId self.sessionKey = sessionKey def decrypt(self, encryptedData, iv): # base64 decode sessionKey = base64.b64decode(self.sessionKey) encryptedData = base64.b64decode(encryptedData) iv = base64.b64decode(iv) cipher = AES.new(sessionKey, AES.MODE_CBC, iv) decrypted = json.loads(self._unpad(cipher.decrypt(encryptedData))) if decrypted['watermark']['appid'] != self.appId: raise Exception('Invalid Buffer') return decrypted def _unpad(self, s): return s[:-ord(s[len(s)-1:])] UID = redis_conn.get(Token).decode() encryptedData = data['encryptedData'] iv = data['iv'] appId = 'wxa0e1ee170a2760d0' sessionKey = data['key'] pc = WXBizDataCrypt(appId, sessionKey) de = pc.decrypt(encryptedData, iv) openGId = de['openGId'] if openGId == "t.......8": print('1111') sql = "UPDATE useropenids set isseed = 1 where UID = {}".format(UID) cur.execute(sql) conn.commit() response['seed'] = 99 else: sql = "UPDATE useropenids set isseed = 1 where UID = {}".format(UID) cur.execute(sql) conn.commit() response['seed'] = 9 response['rep'] = pc.decrypt(encryptedData, iv)
微信支付：
登录授权获取openid
调用统一下单接口，返回五个值给前端
登陆：
GET https://api.weixin.qq.com/sns/jscode2session?appid=APPID&secret=SECRET&js_code=JSCODE&grant_type=authorization_code
返回得到openid统一下单接口：
URL地址：https://api.mch.weixin.qq.com/pay/unifiedorder需要参数太多,具体参考微信文档：https://pay.weixin.qq.com/wiki/doc/api/wxa/wxa_api.php?chapter=9_1&index=1
import hashlibimport randomimport time# from Cryptodome.Cipher import AESfrom Crypto.Cipher import AESfrom lxml import htmletree = html.etreedef to_dict(content): raw = {} root = etree.fromstring(content) for child in root: raw[child.tag] = child.text return rawdef random_str(randomlength=8): """ 生成随机字符串 :param randomlength: 字符串长度 :return: """ str = '' chars = 'AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz0123456789' length = len(chars) - 1 for i in range(randomlength): str+=chars[random.randint(0, length)] return strclass WXBizDataCrypt: def __init__(self, appId, sessionKey): self.appId = appId self.sessionKey = sessionKey def decrypt(self, encryptedData, iv): # base64 decode sessionKey = base64.b64decode(self.sessionKey) encryptedData = base64.b64decode(encryptedData) iv = base64.b64decode(iv) cipher = AES.new(sessionKey, AES.MODE_CBC, iv) decrypted = json.loads(self._unpad(cipher.decrypt(encryptedData))) if decrypted['watermark']['appid'] != self.appId: raise Exception('Invalid Buffer') return decrypted def _unpad(self, s): return s[:-ord(s[len(s)-1:])]def order_num(phone): """ 生成扫码付款订单号 :param phone: 手机号 :return: """ local_time = time.strftime('%Y%m%d%H%M%S', time.localtime(time.time())) result = phone + 'T' + local_time + random_str(5) return resultdef get_sign(data_dict, key): """ 签名函数 :param data_dict: 需要签名的参数，格式为字典 :param key: 密钥 ，即上面的API_KEY :return: 字符串 """ params_list = sorted(data_dict.items(), key=lambda e: e[0], reverse=False) # 参数字典倒排序为列表 params_str = "&".join(u"{}={}".format(k, v) for k, v in params_list) + '&key=' + key # 组织参数字符串并在末尾添加商户交易密钥 md5 = hashlib.md5() # 使用MD5加密模式 md5.update(params_str.encode('utf-8')) # 将参数字符串传入 sign = md5.hexdigest().upper() # 完成加密并转为大写 return signdef to_xml(raw): s = "" for k, v in raw.items(): s += "0}>{ return "{0}".format(s)
data = {"appid": "wxa0e1ee170a2760d0", "mch_id": "1601187451", "nonce_str": strr, "openid": openid, "body": "test", "out_trade_no": trade_no, "total_fee": total, "spbill_create_ip": "192.168.1.11", "notify_url": "http://www.example.com/pay/weixin/notify", "trade_type": "JSAPI"}sign = get_sign(data, mul_key)data['sign'] = signdata = to_xml(data)res = requests.post(req, data=data)rep = (to_dict(res.content))print(rep)paysign = "appId={}&nonceStr={}&package={}&signType=MD5&timeStamp={}&key={}".format(rep['appid'],nnstr,payid,timestamp,mul_key)
调用之后将
paySign，
timeStamp，
nonceStr，
signType返给前端即可。
PS：保存订单号和其他支付之后的逻辑在前端成功的回调里，后端出接口调用即可
转播
