string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%89%BE%E4%B8%8D%E5%88%B0%E7%BD%91%E6%80%8E%E4%B9%88%E5%9B%9E%E4%BA%8B => Failed to connect to 101.89.117.144 port 38208: Connection refused"
找不到网怎么回事
