string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BD%91%E7%BB%9C%E8%BF%9E%E6%8E%A5%E5%8F%97%E9%99%90%E5%92%8B%E5%9B%9E%E4%BA%8B%E5%91%A2 => Failed to connect to 101.89.117.144 port 38056: Connection refused"
网络连接受限咋回事呢
