string(228) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=ipad2019%E5%92%8Cipad2018%E5%8F%82%E6%95%B0%E5%AF%B9%E6%AF%94 => Failed to connect to 101.91.112.32 port 38221: Connection refused"
ipad2019和ipad2018参数对比
