string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%90%91%E7%A8%8B%E5%BA%8F%E5%8F%91%E9%80%81%E5%91%BD%E4%BB%A4%E5%A4%B1%E8%B4%A5%E6%80%8E%E4%B9%88%E8%A7%A3%E5%86%B3 => Failed to connect to 101.89.143.195 port 38175: Connection refused"
向程序发送命令失败怎么解决
