PythonはWeChatカード決済（バーコード支払い）MicroPayを実現します。
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転載は原文の住所を明記してください。http://www.cnblogs.com/ygj0930/p/7686765.html
資料を読みます
シーン紹介：https://pay.weixin.qq.com/wiki/doc/api/micropay.php?chapter=5_1
支払いの流れ：https://pay.weixin.qq.com/wiki/doc/api/micropay.php?chapter=5_4
カードで支払う：https://pay.weixin.qq.com/wiki/doc/api/micropay.php?chapter=9_10&index=1
注文の決済結果を確認する：https://pay.weixin.qq.com/wiki/doc/api/micropay.php?chapter=9_2
二：設定情報準備
三：カード決済ツール類の作成
1:補助関数
2:カードでのお支払いをお願いします。
3：注文番号によって決済結果を調べます。
資料を読みます
シーン紹介：https://pay.weixin.qq.com/wiki/doc/api/micropay.php?chapter=5_1
支払いの流れ：https://pay.weixin.qq.com/wiki/doc/api/micropay.php?chapter=5_4
カードで支払う：https://pay.weixin.qq.com/wiki/doc/api/micropay.php?chapter=9_10&index=1
注文の決済結果を確認する：https://pay.weixin.qq.com/wiki/doc/api/micropay.php?chapter=9_2
二：設定情報準備
# ======== ===========
_APP_ID = ""; # appid
_MCH_ID = ""; #
_API_KEY = ""; # (pay.weixin.qq.com) --> -->API --> ，
_host_name = socket.gethostname()
_ip_address = socket.gethostbyname(_host_name)
_CREATE_IP = _ip_address; # ip
# url
_MICROPAY_URL = "https://api.mch.weixin.qq.com/pay/micropay"; # api
_QUERY_URL = "https://api.mch.weixin.qq.com/pay/orderquery"; # api三：カード決済ツール類の作成
1:補助関数
def get_sign_for_wx(self, para, key):
'''
,
:param cr:
:param uid:
:param para:
:param context:
:return:
'''
keylist = list(para.keys())
keylist.sort()
s = ''
for i in range(len(keylist)):
s += str(keylist[i]) + '=' + str(para[keylist[i]])
if i != len(keylist) - 1:
s += '&'
s += '&key=' + key
signmd5 = hashlib.md5()
signmd5.update(s)
sign = (signmd5.hexdigest()).upper()
return sign
# xml
def get_xml_data(self, doc, para):
root = doc.createElement('xml')
doc.appendChild(root)
for key, value in sorted(para.items()):
new_node = doc.createElement(key)
node_value = doc.createTextNode(str(value))
new_node.appendChild(node_value)
root.appendChild(new_node)
return doc2:カードでのお支払いをお願いします。
def do_micropay(self,orderid,goodsName,goodsPrice,authCode,**kwargs):
'''
'''
appid = self._APP_ID
mch_id = self._MCH_ID
key = self._API_KEY
nonce_str = str(int(round(time.time() * 1000))) + str(random.randint(1, 999)) + string.join(random.sample(
['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u',
'v', 'w', 'x', 'y', 'z'], 5)).replace(" ", "")
spbill_create_ip = self._CREATE_IP
params = {}
params['appid'] = appid
params['mch_id'] = mch_id
params['nonce_str'] = nonce_str
params['out_trade_no'] = orderid.encode('utf-8') # ， utf8 ，
params['total_fee'] = goodsPrice # ，
params['spbill_create_ip'] = spbill_create_ip
params['body'] = goodsName.encode('utf-8') # utf-8 ， xml
params['auth_code'] = authCode
doc = dom.Document()
self.get_xml_data(doc, params)
sign = self.get_sign_for_wx(params, self._API_KEY)
params['sign'] = sign
signnode = doc.createElement('sign')
signvalue = doc.createTextNode(sign)
signnode.appendChild(signvalue)
doc.getElementsByTagName('xml')[0].appendChild(signnode)
#
req = urllib2.Request(self._MICROPAY_URL)
req.headers['Content-Type'] = 'text/xml'
req.data = doc.toprettyxml()
res_data = urllib2.urlopen(req)
#
res_read = res_data.read()
doc = xmltodict.parse(res_read)
return_code = doc['xml']['return_code']
#
# ， ， result_code
if return_code == 'SUCCESS':
result_code = doc['xml']['result_code']
#
if result_code == 'SUCCESS':
buyer = doc['xml']['openid'] # id
return (True, 'SUCCESS', u' ',buyer)
elif result_code == 'FAIL':
error_code = doc['xml']['err_code']
error_code_des = doc['xml']['err_code_des']
return (False, error_code, error_code_des,'')
else:
return_msg = doc['xml']['return_msg']
return (False, return_code, return_msg,'')3：注文番号によって決済結果を調べます。
def do_micropay_query(self,orderid):
appid = self._APP_ID
mch_id = self._MCH_ID
key = self._API_KEY
out_trade_no = orderid.encode('utf-8') # ， utf8 ，
nonce_str = str(int(round(time.time() * 1000))) + str(random.randint(1, 999)) + string.join(random.sample(
['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u',
'v', 'w', 'x', 'y', 'z'], 5)).replace(" ", "")
params = {}
params['appid'] = appid
params['mch_id'] = mch_id
params['nonce_str'] = nonce_str
params['out_trade_no'] = out_trade_no
doc = dom.Document()
self.get_xml_data(doc, params)
sign = self.get_sign_for_wx(params, self._API_KEY)
params['sign'] = sign
signnode = doc.createElement('sign')
signvalue = doc.createTextNode(sign)
signnode.appendChild(signvalue)
doc.getElementsByTagName('xml')[0].appendChild(signnode)
#
req = urllib2.Request(self._QUERY_URL)
req.headers['Content-Type'] = 'text/xml'
req.data = doc.toprettyxml()
res_data = urllib2.urlopen(req)
#
res_read = res_data.read()
doc = xmltodict.parse(res_read)
return_code = doc['xml']['return_code']
if return_code == 'SUCCESS':
result_code = doc['xml']['result_code']
#
if result_code == 'SUCCESS':
trade_state = doc['xml']['trade_state']
#
if trade_state == 'SUCCESS':
buyer = doc['xml']['openid']
return (True, 'SUCCESS', u' ',buyer)
# 、
elif trade_state == 'NOTPAY':
return (False, 'NOTPAY', u' ','')
elif trade_state == 'USERPAYING':
return (False, 'USERPAYING', u' ','')
# 、 、
elif trade_state == 'CLOSED':
return (False, 'CLOSED', u' ','')
elif trade_state == 'REVOKED':
return (False, 'REVOKED', u' ','')
elif trade_state == 'PAYERROR':
return (False, 'PAYERROR', u' ','')
else:
error_code = doc['xml']['err_code']
error_code_des = doc['xml']['err_code_des']
return (False, error_code, error_code_des,'')
else:
return_msg = doc['xml']['return_msg']
return (False, return_code, return_msg,'')