string(232) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=nfc%E5%8A%9F%E8%83%BD%E5%BC%BA%E5%A4%A7%E7%9A%84%E6%89%8B%E6%9C%BA => Failed to connect to 61.171.74.35 port 38041: Connection refused"
nfc功能强大的手机
