string(307) "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%E9%94%99%E4%BA%86%E6%80%8E%E4%B9%88%E6%81%A2%E5%A4%8D%E5%88%B0%E5%8E%9F%E6%9D%A5%E7%9A%84%E6%A0%BC%E5%BC%8F%E9%87%8C => Failed to connect to 101.91.112.32 port 38162: Connection refused"
excel保存错了怎么恢复到原来的格式里
