string(260) "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%E6%98%AF%E4%BB%80%E4%B9%88%E6%89%8B%E6%9C%BA%E6%9C%89%E5%93%AA%E4%BA%9B => Failed to connect to 101.91.112.32 port 38162: Connection refused"
nfc功能是什么手机有哪些
