def get(self):
tn = self.get_argument("tn", None)
subject = self.get_argument("subject", "账户充值")
body = self.get_argument("body", "充值")
price = self.get_argument("price", None)
if tn and price:
price = float(price)
alipay = Alipay(**self.settings)
self.redirect(alipay.create_payurl_cz(tn, subject, body, price))
