string(243) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%88%B6%E4%BD%9Capp%E9%9C%80%E8%A6%81%E5%A4%9A%E5%B0%91%E8%B4%B9%E7%94%A8 => Failed to connect to 101.89.117.144 port 38017: Connection refused"
制作app需要多少费用
