//判断发送的消息长度是否太长，太长就分段

if len(content) > Config.MESSAGELENGTH:
    message_count = len(content) / Config.MESSAGELENGTH + 1
    message_number = 1
    while len(content) > 0:
        cut = content[:Config.MESSAGELENGTH]
        msg_data = json.dumps({
            'touser': to,
            'msgtype': 'text',
            'agentid': self.agentid,
            'text': {
                'content': 'msg({number}/{count})\n'.format(number=message_number, count=message_count) + cut
            }
        })
        requests.post(url, params=params, data=msg_data)
        content = content[Config.MESSAGELENGTH:]
        message_number += 1
    return message_number
else:
    msg_data = json.dumps({
        'touser': to,
        'msgtype': 'text',
        'agentid': self.agentid,
        'text': {
            'content': content
        }
    })
    req = requests.post(url, params=params, data=msg_data)
    return req.text