string(264) "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%E5%8F%AF%E4%BB%A5%E9%98%B2%E6%AD%A2%E8%B9%AD%E7%BD%91%E7%9A%84%E8%BD%AF%E4%BB%B6 => Failed to connect to 14.18.46.51 port 38044: Connection refused"
怎么可以防止蹭网的软件
