string(264) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%A6%82%E4%BD%95%E6%89%B9%E9%87%8F%E7%BB%99%E6%96%87%E4%BB%B6%E6%B7%BB%E5%8A%A0%E5%BA%8F%E5%8F%B7 => Failed to connect to 14.18.46.51 port 38044: Connection refused"
如何批量给文件添加序号
