string(270) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=excel%E8%A1%A8%E6%A0%BC%E4%BF%9D%E5%AD%98%E5%AE%8C%E6%A0%BC%E5%BC%8F%E5%85%A8%E9%83%A8%E6%B6%88%E5%A4%B1 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
excel表格保存完格式全部消失
