string(227) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=wi-fi%E8%BF%9E%E6%8E%A5%E6%98%BE%E7%A4%BA%E5%8F%97%E9%99%90 => Failed to connect to 101.89.166.210 port 38089: Connection refused"
wi-fi连接显示受限
