string(243) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=app%E5%BC%80%E5%8F%91%E6%96%B9%E6%A1%88%E6%80%8E%E4%B9%88%E5%86%99%E7%9A%84 => Failed to connect to 101.89.159.206 port 38075: Connection refused"
app开发方案怎么写的
