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支付宝移动网页支付的实现
# -*- coding: utf-8 -*-
from hashlib import md5
from urllib import urlencode
#网关
GATEWAY = 'http://wappaygw.alipay.com/service/rest.htm'
class Alipay(object):
'支付宝移动服务网关'
def __init__(self, app, key, account):
self.app = app
self.key = key
self.account = account
def sign(self, p):
'签名方法'
keys = p.keys()
keys.sort()
s = '&'.join(['%s=%s' % (k, p[k]) for k in keys])
s += self.key
if isinstance(s, unicode):
s = s.encode('utf8')
hash = md5(s).hexdigest()
return hash
def check_sign(self, p):
'检查签名'
key = p.pop('sign')
p.pop('sign_type', '')
keys = p.keys()
keys.sort()
s = '&'.join(['%s=%s' % (k, p[k]) for k in keys])
s += self.key
if isinstance(s, unicode):
s = s.encode('utf8')
hash = md5(s).hexdigest()
return key == hash
def check_notify_sign(self, p):
'检查主动通知的签名'
key = p.pop('sign')
order = ['service', 'v', 'sec_id', 'notify_data']
s = '&'.join(['%s=%s' % (k, p[k]) for k in order])
s += self.key
if isinstance(s, unicode):
s = s.encode('utf8')
hash = md5(s).hexdigest()
return key == hash
def get_token_xml(self, p):
'请求中用的XML片段'
s = ['<direct_trade_create_req>']
p['pay_expire'] = 24 * 60 * 2 #两天交易关闭
for f in ['subject', 'out_trade_no', 'total_fee', 'seller_account_name', 'call_back_url', 'notify_url', 'pay_expire']:
if f in p:
s.append('<%s>%s</%s>' % (f,
p[f].replace('<', '&lt;').replace('>', '&gt;').replace('&', '&amp;') if type(p[f]) in [str, unicode] else p[f],
f))
s.append('</direct_trade_create_req>')
return ''.join(s)
def get_token_url(self, p):
'''获取token的最终地址
p中的成员参数有:
- out_trade_no 商户唯一号 (32)
- subject 标题 (128)
- total_fee 总金额
- call_back_url 回调地址
- notify_url 通知地址
'''
req = {}
req['service'] = 'alipay.wap.trade.create.direct'
req['format'] = 'xml'
req['v'] = '2.0'
req['partner'] = self.app
req['req_id'] = p['out_trade_no']
req['sec_id'] = 'MD5'
p['seller_account_name'] = self.account
req['req_data'] = self.get_token_xml(p)
sign = self.sign(req)
req['sign'] = sign
for k in req.keys():
if isinstance(req[k], unicode):
req[k] = req[k].encode('utf8')
return GATEWAY + '?' + urlencode(req)
def get_pay_url(self, token):
'''获取支付地址'''
req = {}
req['service'] = 'alipay.wap.auth.authAndExecute'
req['format'] = 'xml'
req['v'] = '2.0'
req['partner'] = self.app
req['sec_id'] = 'MD5'
req['req_data'] = '<auth_and_execute_req><request_token>%s</request_token></auth_and_execute_req>' % token
sign = self.sign(req)
req['sign'] = sign
for k in req.keys():
if isinstance(req[k], unicode):
req[k] = req[k].encode('utf8')
return GATEWAY + '?' + urlencode(req)
if __name__ == '__main__':
import time
p = {
'subject': 'test',
'out_trade_no': str(int(time.time())),
'total_fee': '0.01',
'call_back_url': 'http://www.zouyesheng.com'
}
alipay = Alipay('', '', '')
print alipay.get_token_url(p)
#print alipay.get_pay_url('')
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