string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%80%8E%E4%B9%88%E9%98%B2%E6%AD%A2%E8%A2%AB%E8%B9%AD%E6%97%A0%E7%BA%BF%E7%BD%91 => Failed to connect to 101.89.117.144 port 38022: Connection refused"
怎么防止被蹭无线网
