DatagramSocket socket = new DatagramSocket(9999); byte[] date = new byte[1024]; DatagramPacket packet = new DatagramPacket(date, date.length); System.out.println("服務端啟動等待客戶連接。。。"); socket.receive(packet); String info = new String(date, 0, packet.getLength(), "utf-8"); System.out.println("我是服務器客戶端說" + info);上面是代碼 我是連接硬件設備的只能接收 結果如下-------------------------服務端啟動等待客戶連接。。。我是服務器客戶端說^????58bc84636e3d257d70e2af77