string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%88%9D%E5%AD%A6%E8%80%85%E6%80%8E%E6%A0%B7%E8%AE%B0%E4%BD%8F%E9%94%AE%E7%9B%98 => Failed to connect to 14.116.215.7 port 38230: Connection refused"
初学者怎样记住键盘
