string(272) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=excel%E4%BF%9D%E5%AD%98%E5%90%8E%E8%83%BD%E4%B8%8D%E8%83%BD%E6%81%A2%E5%A4%8D%E4%B9%8B%E5%89%8D%E7%9A%84 => Failed to connect to 101.89.166.210 port 38089: Connection refused"
excel保存后能不能恢复之前的
