电子秤设备
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zc
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package top.wms.admin.controller.weighManage.ah;
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import com.fazecast.jSerialComm.SerialPort;
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import com.fazecast.jSerialComm.SerialPortDataListener;
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import com.fazecast.jSerialComm.SerialPortEvent;
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import jakarta.annotation.PostConstruct;
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import jakarta.annotation.PreDestroy;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.stereotype.Component;
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import java.nio.charset.Charset;
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import java.util.concurrent.Executors;
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import java.util.concurrent.ScheduledExecutorService;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.atomic.AtomicBoolean;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.concurrent.atomic.AtomicLong;
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/**
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* 安衡电子秤连接类
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*/
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@Component
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@Slf4j
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public class AHDZCConnect {
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private static final String PORT_NAME = "COM5";
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private static final int BAUD_RATE = 9600;
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private static final int DATA_BITS = 8;
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private static final int STOP_BITS = 1;
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private static final int TIMEOUT = 2000;
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private static final Charset SCALE_CHARSET = Charset.forName("GBK");
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private static final long HEALTH_CHECK_INTERVAL = 5000;
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private static final long DATA_TIMEOUT = 10000;
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private static final int MAX_RECONNECT_DELAY = 30000;
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private static final int INITIAL_RECONNECT_DELAY = 1000;
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private static final int BUFFER_SIZE = 256;
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private volatile SerialPort serialPort;
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private final AtomicBoolean isConnecting = new AtomicBoolean(false);
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private final AtomicBoolean isRunning = new AtomicBoolean(true);
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private final AtomicLong lastDataTime = new AtomicLong(System.currentTimeMillis());
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private final AtomicInteger reconnectAttempts = new AtomicInteger(0);
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private final AtomicInteger currentReconnectDelay = new AtomicInteger(INITIAL_RECONNECT_DELAY);
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private final byte[] readBuffer = new byte[BUFFER_SIZE];
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private ScheduledExecutorService executorService;
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@PostConstruct
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public void init() {
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// 项目启动时初始化并启动服务
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ScaleService();
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start();
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}
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@PreDestroy
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public void destroy() {
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// 项目关闭时停止服务
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stop();
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}
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public void ScaleService() {
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executorService = Executors.newScheduledThreadPool(2, r -> {
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Thread t = new Thread(r, "ScaleService-Worker");
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t.setDaemon(true);
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return t;
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});
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Runtime.getRuntime().addShutdownHook(new Thread(this::stop, "Shutdown-Hook"));
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}
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public void start() {
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log.info("========================================");
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log.info("启动电子秤连接线程，串口: " + PORT_NAME + " | 波特率: " + BAUD_RATE);
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log.info("========================================");
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startHealthCheck();
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startConnectionMonitor();
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if (connect()) {
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log.info("电子秤连接成功！");
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} else {
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log.info("电子秤连接失败，将自动尝试重连...");
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}
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}
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private boolean connect() {
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if (!isRunning.get()) {
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return false;
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}
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if (!isConnecting.compareAndSet(false, true)) {
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log.error("[连接] 已有连接任务正在执行，跳过");
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return false;
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}
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try {
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closeSerialPort();
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SerialPort newPort = SerialPort.getCommPort(PORT_NAME);
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newPort.setBaudRate(BAUD_RATE);
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newPort.setNumDataBits(DATA_BITS);
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newPort.setNumStopBits(STOP_BITS);
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newPort.setParity(SerialPort.NO_PARITY);
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newPort.setComPortTimeouts(TIMEOUT, TIMEOUT, TIMEOUT);
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if (!newPort.openPort()) {
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int attempts = reconnectAttempts.incrementAndGet();
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int delay = calculateReconnectDelay();
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log.info("[连接失败] 无法打开串口 {} (第{}次尝试，下次重试间隔: {}ms)", PORT_NAME, attempts, delay);
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return false;
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}
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serialPort = newPort;
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reconnectAttempts.set(0);
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currentReconnectDelay.set(INITIAL_RECONNECT_DELAY);
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lastDataTime.set(System.currentTimeMillis());
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log.info("[连接成功] 串口 {} 已打开", PORT_NAME);
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startDataListener();
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return true;
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} catch (Exception e) {
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log.error("[连接异常] {}", e.getMessage());
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return false;
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} finally {
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isConnecting.set(false);
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}
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}
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private int calculateReconnectDelay() {
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int delay = currentReconnectDelay.get();
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int newDelay = Math.min(delay * 2, MAX_RECONNECT_DELAY);
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currentReconnectDelay.set(newDelay);
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return newDelay;
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}
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private void closeSerialPort() {
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SerialPort oldPort = serialPort;
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serialPort = null;
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if (oldPort != null) {
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try {
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if (oldPort.isOpen()) {
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oldPort.closePort();
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}
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} catch (Exception e) {
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log.error("[关闭串口] 异常: {}", e.getMessage());
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}
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}
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}
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private void startDataListener() {
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SerialPort port = serialPort;
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if (port == null || !port.isOpen()) {
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return;
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}
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port.addDataListener(new SerialPortDataListener() {
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@Override
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public int getListeningEvents() {
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return SerialPort.LISTENING_EVENT_DATA_AVAILABLE;
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}
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@Override
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public void serialEvent(SerialPortEvent event) {
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if (event.getEventType() != SerialPort.LISTENING_EVENT_DATA_AVAILABLE) {
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return;
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}
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try {
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SerialPort currentPort = serialPort;
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if (currentPort == null) {
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return;
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}
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int bytesAvailable = currentPort.bytesAvailable();
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if (bytesAvailable <= 0) {
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return;
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}
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int bytesToRead = Math.min(bytesAvailable, BUFFER_SIZE);
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int numRead = currentPort.readBytes(readBuffer, bytesToRead);
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if (numRead > 0) {
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lastDataTime.set(System.currentTimeMillis());
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String data = new String(readBuffer, 0, numRead, SCALE_CHARSET);
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log.info("[数据] {}", data.trim());
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}
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} catch (Exception e) {
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log.error("[读取异常] {}", e.getMessage());
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triggerReconnect();
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}
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}
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});
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}
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private void startHealthCheck() {
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log.info("[健康检查] 启动，间隔 {} 秒", HEALTH_CHECK_INTERVAL / 1000);
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executorService.scheduleAtFixedRate(() -> {
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if (!isRunning.get()) {
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return;
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}
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try {
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SerialPort port = serialPort;
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if (port == null) {
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log.error("[健康检查] 串口对象为空");
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if (reconnectAttempts.get() < 10) {
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connect();
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}
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return;
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}
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boolean isOpen = port.isOpen();
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log.error("[健康检查] 串口状态: {}", isOpen ? "已打开" : "已关闭");
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if (!isOpen) {
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log.info("[健康检查] 检测到串口关闭，尝试重连...");
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connect();
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}
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} catch (Exception e) {
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log.error("[健康检查异常] {}", e.getMessage());
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}
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}, HEALTH_CHECK_INTERVAL, HEALTH_CHECK_INTERVAL, TimeUnit.MILLISECONDS);
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}
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private void startConnectionMonitor() {
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log.info("[连接监控] 启动，间隔 3 秒");
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executorService.scheduleAtFixedRate(() -> {
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if (!isRunning.get()) {
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return;
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}
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try {
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long currentTime = System.currentTimeMillis();
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long timeSinceLastData = currentTime - lastDataTime.get();
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if (timeSinceLastData > DATA_TIMEOUT) {
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SerialPort port = serialPort;
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if (port != null && port.isOpen()) {
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try {
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int bytesAvailable = port.bytesAvailable();
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if (bytesAvailable < 0) {
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log.info("[连接监控] 检测到连接已断开，尝试重连...");
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triggerReconnect();
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} else {
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log.error("[连接监控] 超时无数据，但连接正常，等待数据...");
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}
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} catch (Exception e) {
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log.error("[连接监控] 检测到连接异常: {}", e.getMessage());
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triggerReconnect();
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}
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}
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}
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} catch (Exception e) {
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log.error("[连接监控异常] {}", e.getMessage());
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}
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}, 3000, 3000, TimeUnit.MILLISECONDS);
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}
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private void triggerReconnect() {
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if (isConnecting.compareAndSet(false, true)) {
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isConnecting.set(false);
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connect();
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}
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}
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public void stop() {
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if (!isRunning.compareAndSet(true, false)) {
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return;
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}
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log.info("========================================");
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log.info("停止电子秤线程...");
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log.info("========================================");
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try {
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if (executorService != null && !executorService.isShutdown()) {
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executorService.shutdown();
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if (!executorService.awaitTermination(3, TimeUnit.SECONDS)) {
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executorService.shutdownNow();
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}
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}
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} catch (InterruptedException e) {
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if (executorService != null) {
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executorService.shutdownNow();
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}
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Thread.currentThread().interrupt();
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}
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closeSerialPort();
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log.info("线程已完全停止");
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}
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}
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