string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%94%B5%E8%84%91%E6%98%BE%E7%A4%BA%E4%B8%8D%E5%87%BA%E6%97%A0%E7%BA%BF%E7%BD%91%E7%BB%9C => Failed to connect to 61.171.74.35 port 38027: Connection refused"
电脑显示不出无线网络
