string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%80%8E%E6%A0%B7%E6%89%B9%E9%87%8F%E4%BF%AE%E6%94%B9%E6%88%90%E4%B8%8D%E5%90%8C%E6%96%87%E4%BB%B6%E5%90%8D => Failed to connect to 101.89.117.144 port 38022: Connection refused"
怎样批量修改成不同文件名
