string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%90%88%E5%B9%B6%E5%8D%95%E5%85%83%E6%A0%BC%E6%97%B6%E4%BF%9D%E7%95%99%E6%89%80%E6%9C%89%E6%95%B0%E6%8D%AE => Failed to connect to 101.89.117.144 port 38208: Connection refused"
合并单元格时保留所有数据
