string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=21%E5%B9%B4%E7%9B%91%E7%90%86%E4%B8%89%E6%8E%A7%E9%9A%BE%E4%B8%8D%E9%9A%BE => Failed to connect to 14.116.215.7 port 38230: Connection refused"
21年监理三控难不难
