string(283) "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%8A%8A%E6%96%87%E4%BB%B6%E5%90%8D%E6%89%B9%E9%87%8F%E4%BF%AE%E6%94%B9%E6%88%90%E6%96%87%E4%BB%B6 => Failed to connect to 14.18.117.71 port 38041: Connection refused"
如何把文件名批量修改成文件
