string(297) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%A6%82%E4%BD%95%E4%BB%8E%E7%88%B1%E5%A5%87%E8%89%BA%E4%B8%8B%E8%BD%BDmp4%E6%A0%BC%E5%BC%8F%E7%9A%84%E8%A7%86%E9%A2%91%E5%91%A2 => Failed to connect to 101.89.159.206 port 38187: Connection refused"
如何从爱奇艺下载mp4格式的视频呢
