string(259) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%80%8E%E4%B9%88%E5%BD%BB%E5%BA%95%E6%B8%85%E9%99%A4cad%E6%96%87%E4%BB%B6%E8%AE%B0%E5%BD%95 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
怎么彻底清除cad文件记录
