string(241) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2019%E6%AC%BEipad%E5%8F%82%E6%95%B0%E9%85%8D%E7%BD%AE%E5%92%8C2020%E6%AC%BE => Failed to connect to 61.171.74.35 port 38041: Connection refused"
2019款ipad参数配置和2020款
