string(270) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%81%9A%E7%9F%AD%E8%A7%86%E9%A2%91app%E9%9C%80%E8%A6%81%E7%94%B3%E8%AF%B7%E4%BB%80%E4%B9%88%E8%AF%81 => Failed to connect to 125.88.227.171 port 38062: Connection refused"
做短视频app需要申请什么证
