string(250) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=app%E5%88%B6%E4%BD%9C%E6%B5%81%E7%A8%8B%E5%8F%8A%E6%9C%80%E4%BC%98%E6%AD%A5%E9%AA%A4 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
app制作流程及最优步骤
