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%E5%90%8D%E6%8C%89%E7%85%A7%E9%A1%BA%E5%BA%8F%E6%8E%92%E5%88%97 => Failed to connect to 101.91.112.32 port 38221: Connection refused"
文件名按照顺序排列
