string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%BB%BA%E5%B7%A5%E8%A7%A3%E9%87%8A%E7%AC%AC%E4%BA%8C%E6%9D%A1 => Failed to connect to 101.89.143.195 port 38175: Connection refused"
建工解释第二条
