string(284) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%80%8E%E4%B9%88%E6%8A%8A%E6%96%87%E4%BB%B6%E9%87%8D%E5%91%BD%E5%90%8D%E4%B8%BA%E5%BA%8F%E5%8F%B7%E6%89%B9%E9%87%8F => Failed to connect to 101.91.112.32 port 38195: Connection refused"
怎么把文件重命名为序号批量
