string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%8E%B0%E5%9C%A8%E7%9A%84%E5%B0%8F%E6%8A%95%E8%B5%84%E9%83%BD%E6%9C%89%E5%95%A5%E4%B8%9A%E5%8A%A1 => Failed to connect to 101.89.143.195 port 38109: Connection refused"
现在的小投资都有啥业务
