string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%94%80%E5%94%AE%E7%82%B9%E7%AE%A1%E7%90%86%E7%B3%BB%E7%BB%9F%E7%9A%84%E4%BD%9C%E7%94%A8 => Failed to connect to 101.89.159.206 port 38087: Connection refused"
销售点管理系统的作用
