string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%BC%A0%E9%9B%AA%E5%B3%B0%E8%B0%88%E6%AD%A6%E6%B1%89%E7%A7%91%E6%8A%80%E5%A4%A7%E5%AD%A6%E8%80%83%E7%A0%94 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
张雪峰谈武汉科技大学考研
