string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BD%91%E4%B8%8A%E5%9C%A8%E5%93%AA%E4%B9%B0%E6%AD%A3%E7%89%88%E4%B9%A6 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
网上在哪买正版书
