string(245) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=excel%E5%8A%9E%E5%85%AC%E8%BD%AF%E4%BB%B6%E5%9F%BA%E7%A1%80%E7%9F%A5%E8%AF%86 => Failed to connect to 101.89.117.144 port 38017: Connection refused"
excel办公软件基础知识
