string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%9C%89%E4%BB%80%E4%B9%88%E5%B0%8F%E9%A1%B9%E7%9B%AE%E8%B5%9A%E9%92%B1 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
有什么小项目赚钱
