string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BD%91%E7%BB%9C%E9%94%80%E5%94%AE%E7%9A%84%E8%81%8C%E8%B4%A3 => Failed to connect to 101.89.159.206 port 38100: Connection refused"
网络销售的职责
