string(259) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%BD%A6%E7%A5%A8%E4%B8%8D%E8%B6%B324%E5%B0%8F%E6%97%B6%E6%94%B9%E7%AD%BE%E5%86%8D%E9%80%80 => Failed to connect to 101.91.112.32 port 38195: Connection refused"
车票不足24小时改签再退
