对于目前众多的验证码解决方案来说，这个API有着中国电信这个重量级的运营商为靠山，应该是比较靠谱的了，而且还是免费的。详细情况请参阅：http://open.189.cn

使用方式：

定义app_id和app_secret

r = RandCode('app_id', 'app_secret')

支持平台的两种接口方式

方式1：自定义接收验证码的回调URL

r.send('phone number', 'http://yourdomain/rand_code.php', '3')

方式2：自定义验证码内容

r.send_sms('phone number', 189189)

复制代码 代码如下:

!/usr/bin/env python

coding: utf-8

from time import strftime, localtime
import urllib, urllib2, json
import hmac, hashlib

class RandCode(object):

APP_ID = ''
APP_SECRET = ''
ACCESS_TOKEN = ''
RANDCODE_TOKEN = ''
TOKEN_API = 'https://oauth.api.189.cn/emp/oauth2/v2/access_token'
RANDCODE_TOKEN_API = 'http://api.189.cn/v2/dm/randcode/token'
RANDCODE_SEND_API = 'http://api.189.cn/v2/dm/randcode/send'
RANDCODE_SENDSMS_API = 'http://api.189.cn/v2/dm/randcode/sendSms'

def init(self, app_id='', app_secret='', access_token=''):
self.APP_ID = app_id or RandCode.APP_ID
self.APP_SECRET = app_secret or RandCode.APP_SECRET
self.ACCESS_TOKEN = access_token or self.__fetch_access_token()
self.RANDCODE_TOKEN = self.__fetch_randcode_token()

def send(self, phone, url, exp_time):
result = False
if self.ACCESS_TOKEN and self.RANDCODE_TOKEN:
data = {
'app_id':self.APP_ID,
'access_token':self.ACCESS_TOKEN,
'token':self.RANDCODE_TOKEN,
'phone':phone,
'url':url,
'exp_time':exp_time,
'timestamp':self.date_time(),
}
data = self.build_request_string(data)
data = self.data_sign(data)
if data:
res = self.request_data('post', data, self.RANDCODE_SEND_API)
json_data = json.loads(res)
if json_data['res_code'] == 0:
result = True
return result

def send_sms(self, phone, randcode, exp_time='2'):
result = False
if self.ACCESS_TOKEN and self.RANDCODE_TOKEN:
data = {
'app_id':self.APP_ID,
'access_token':self.ACCESS_TOKEN,
'token':self.RANDCODE_TOKEN,
'phone':phone,
'randcode':str(randcode),
'exp_time':exp_time,
'timestamp':self.date_time(),
}
data = self.build_request_string(data)
data = self.data_sign(data)
if data:
res = self.request_data('post', data, self.RANDCODE_SENDSMS_API)
json_data = json.loads(res)
if json_data['res_code'] == 0:
result = True
return result
pass

def __request_data(self, method, data, url):
if isinstance(data, dict):
data = urllib.urlencode(data)
if method == 'post':
req = urllib2.Request(url, data)
else:
url = '%s?%s' % (url, data)
req = urllib2.Request(url)
return urllib2.urlopen(req).read()

def __fetch_access_token(self):
access_token = self.ACCESS_TOKEN
if access_token == '':
data = {
'grant_type':'client_credentials',
'app_id':self.APP_ID,
'app_secret':self.APP_SECRET,
}
res = self.__request_data('post', data, self.TOKEN_API)
json_data = json.loads(res)
if json_data['res_code'] == '0':
access_token = json_data['access_token']
else:
raise ValueError(json_data['res_message'])
return access_token

def fetch_randcode_token(self):
result = ''
if self.ACCESS_TOKEN != '':
data = {
'app_id':self.APP_ID,
'access_token':self.ACCESS_TOKEN,
'timestamp':self.__date_time(),
}
data = self.build_request_string(data)
data = self.__data_sign(data)
if data:
res = self.__request_data('get', data, self.RANDCODE_TOKEN_API)
json_data = json.loads(res)
if json_data['res_code'] == 0:
result = json_data['token']
else:
raise ValueError(json_data['res_message'])
return result

def __data_sign(self, data):
result = ''
if data:
if isinstance(data, dict):
data = self.__build_request_string(data)
sign = hmac.new(self.APP_SECRET, urllib.urlencode(data), hashlib.sha1).digest()
elif isinstance(data, unicode):
sign = hmac.new(self.APP_SECRET, data, hashlib.sha1).digest()
if data:
result = "%s&sign;=%s" % ( data, urllib.quote(sign.encode('base64').strip()) )
return result

def __build_request_string(self, dict):
keys = dict.keys()
keys.sort()
return '&'.join([ key + "=" + dict[key] for key in keys ])

def __date_time(self):
return strftime("%Y-%m-%d %H:%M:%S", localtime())

if name == 'main':
r = RandCode('app_id', 'app_secret')
r.send('phone number', 'http://yourdomain/rand_code.php', '3')
r.send_sms('phone number', 189189)