string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%AA%E4%BA%BA%E6%8A%80%E6%9C%AF%E6%A0%88%E6%80%8E%E4%B9%88%E5%86%99 => Failed to connect to 101.89.159.206 port 38187: Connection refused"
个人技术栈怎么写
