string(301) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%9F%AD%E8%A7%86%E9%A2%91%E5%B9%B3%E5%8F%B0%E7%9B%88%E5%88%A9%E6%A8%A1%E5%BC%8F%E5%88%86%E6%9E%90%E5%8F%82%E8%80%83%E6%96%87%E7%8C%AE => Failed to connect to 14.18.117.71 port 38133: Connection refused"
短视频平台盈利模式分析参考文献
