string(248) "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%E6%89%B9%E9%87%8F%E6%8C%89%E5%BA%8F%E5%8F%B7%E5%91%BD%E5%90%8D => Failed to connect to 101.91.112.32 port 38195: Connection refused"
文件批量按序号命名
