string(323) "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%E7%BB%99%E6%96%87%E4%BB%B6%E6%89%B9%E9%87%8F%E9%87%8D%E5%91%BD%E5%90%8D%2C%E5%B9%B6%E4%B8%94%E5%90%8D%E5%AD%97%E4%B8%8D%E7%9B%B8%E5%90%8C => Failed to connect to 101.91.112.32 port 38162: Connection refused"
怎样给文件批量重命名,并且名字不相同
