string(283) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%9C%BA%E7%A5%A8%E5%92%8C%E9%85%92%E5%BA%97%E7%9A%84%E5%9C%A8%E7%BA%BF%E9%A2%84%E5%AE%9A%E4%B8%8D%E4%B8%80%E6%A0%B7 => Failed to connect to 14.18.117.71 port 38093: Connection refused"
机票和酒店的在线预定不一样
