string(229) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=ar2048n%E6%89%AB%E6%8F%8F%E4%BD%BF%E7%94%A8%E6%96%B9%E6%B3%95 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
ar2048n扫描使用方法
