string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%94%9F%E6%84%8F%E5%8F%82%E8%B0%8B%E7%9A%84%E7%94%A8%E6%B3%95 => Failed to connect to 101.89.159.206 port 38075: Connection refused"
生意参谋的用法
