string(246) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%89%B9%E9%87%8F%E9%87%8D%E5%91%BD%E5%90%8D%E5%A4%9A%E4%B8%AA%E6%96%87%E4%BB%B6 => Failed to connect to 14.18.46.51 port 38044: Connection refused"
批量重命名多个文件
