'è·åçŸ€æåè¯Šç»ä¿¡æ¯ççåè¡š, uäžºçå®QQå·, å¹¶å­å¥cache
:type group_id: str
:return:list
return list sample
"b": 0,
"g": 0,
"n": "æµç§°",
"u": 466331426
"b": 0,
"g": 0,
"n": "æµç§°",
"u": 493658565'

def search_group_members(self, group_id):

    url = 'http://qinfo.clt.qq.com/cgi-bin/qun_info/get_group_members_new'
    data = {'bkn': self.bkn, 'gc': str(group_id), 'u': self._self_info.get('uin')}
    response = self.client.post(url, data=data, refer='http://qinfo.clt.qq.com/member.html')
    logger.debug('search_group_members    response:    {}'.format(response))
    response = unescape_json_response(response)
    rsp_json = json.loads(response)
    if (rsp_json['ec'] == 0):
        return rsp_json.get('mems', [])
    else:
        logger.warning('search_group_members    code    unknown:    {}'.format(response))
        return None
