string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%96%87%E4%BB%B6%E5%90%8D%E7%A7%B0%E6%89%B9%E9%87%8F%E5%91%BD%E5%90%8D => Failed to connect to 14.116.215.7 port 38225: Connection refused"
文件名称批量命名
