string(236) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=dns%E8%AE%BE%E7%BD%AE%E6%88%90114.114.114%E6%9C%89%E5%95%A5%E7%94%A8 => Failed to connect to 101.89.143.195 port 38109: Connection refused"
dns设置成114.114.114有啥用
