string(233) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E7%9B%91%E7%90%86%E6%A1%88%E4%BE%8B%E7%AC%AC%E4%B8%89%E9%A2%98 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
2021监理案例第三题
