string(243) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=raw%E8%A6%81%E7%94%A8%E4%BB%80%E4%B9%88%E8%BD%AF%E4%BB%B6%E6%89%93%E5%BC%80 => Failed to connect to 101.89.143.195 port 38109: Connection refused"
raw要用什么软件打开
