string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%80%8E%E4%B9%88%E6%8F%90%E9%AB%98%E6%90%9C%E7%B4%A2%E4%BF%A1%E6%81%AF%E7%9A%84%E8%83%BD%E5%8A%9B => Failed to connect to 101.89.117.144 port 38022: Connection refused"
怎么提高搜索信息的能力
