string(234) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%89%8B%E6%9C%BAapp%E7%9A%84%E5%BC%80%E5%8F%91%E6%B5%81%E7%A8%8B => Failed to connect to 101.89.143.195 port 38175: Connection refused"
手机app的开发流程
