string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%88%98%E5%A4%A9%E7%A3%8A%E4%B8%80%E5%BB%BA%E6%9C%BA%E7%94%B5%E5%8E%89%E5%AE%B3 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
刘天磊一建机电厉害
