string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%8A%E6%B5%B7%E5%9C%B0%E9%93%81%E7%A5%A8%E4%BB%B7%E8%AE%A1%E7%AE%97%E6%96%B9%E6%B3%95 => Failed to connect to 101.89.117.144 port 38005: Connection refused"
上海地铁票价计算方法
