string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BB%80%E4%B9%88%E5%B7%A5%E4%BD%9C%E8%87%AA%E7%94%B1%E4%B8%80%E7%82%B9 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
什么工作自由一点
