1附录 A 电路原理图2附录 B 程序清单硬件连接：public class DataController extends AbstractController implements ApplicationListener {//静态变量（命令和存储数据） public static String DATA = null; public static String CMD = null; public static String code = "6077";//静态 send 方法向服务器发送消息 public static void send(String cmd) throws InterruptedException { try { MqttClient.publish(code, cmd ); } catch (MqttException e) { e.printStackTrace(); } } //...
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