string(248) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%89%93%E9%A2%86%E5%B8%A6%E7%9A%84%E6%96%B9%E6%B3%95%E6%9C%89%E5%87%A0%E7%A7%8D => Failed to connect to 101.91.112.32 port 38221: Connection refused"
打领带的方法有几种
