string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%BB%BA%E8%AE%BE%E6%B3%95%E8%A7%84%E6%80%8E%E4%B9%88%E5%AD%A6 => Failed to connect to 101.89.143.195 port 38175: Connection refused"
建设法规怎么学
