string(241) "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%AE%80%E5%8D%95%E5%BC%80%E5%8F%91%E6%96%B9%E6%B3%95 => Failed to connect to 14.116.215.7 port 38225: Connection refused"
手机app简单开发方法
