private function getData($url)
{
set_time_limit(60);
//每次请求，多加60秒等待时间，避免timeout
$md5 = md5($url);
$data = WxSpider::getCache($md5);
if ($data) {
return unserialize($data);
}
$data = $this->network->get($url);
WxSpider::setCache($md5, serialize($data));
return $data;
}