string(294) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BD%91%E7%AB%99%E5%9F%9F%E5%90%8D%E9%80%89%E6%8B%A9%E5%BA%94%E8%AF%A5%E6%B3%A8%E6%84%8F%E4%BB%80%E4%B9%88%E9%97%AE%E9%A2%98 => Failed to connect to 101.89.143.195 port 38205: Connection refused"
网站域名选择应该注意什么问题
