string(252) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%8B%B9%E6%9E%9Cipad%E5%9E%8B%E5%8F%B7%E5%8F%82%E6%95%B0%E5%AF%B9%E7%85%A7%E8%A1%A8 => Failed to connect to 101.91.112.32 port 38195: Connection refused"
苹果ipad型号参数对照表
