package chuankou;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.atomic.AtomicBoolean;
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import javax.swing.SwingWorker;
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/**
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* 串口消息发送工具类
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* 提供高性能的串口消息发送功能，适合高频调用
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* 优化内存使用，避免长时间运行内存泄漏
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*/
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public class Sendmsg {
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// 静态串口服务实例
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private static volatile SerialPortService serialService = null;
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private static final AtomicBoolean isPortOpen = new AtomicBoolean(false);
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// 改为非final，支持动态控制
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private static volatile boolean DEBUG_MODE = false;
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// 使用ThreadLocal保证SimpleDateFormat线程安全
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private static final ThreadLocal<SimpleDateFormat> TIME_FORMATTER =
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ThreadLocal.withInitial(() -> new SimpleDateFormat("HH:mm:ss.SSS"));
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// 缓存字符串构建器，减少对象创建
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private static final ThreadLocal<StringBuilder> STRING_BUILDER_CACHE =
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ThreadLocal.withInitial(() -> new StringBuilder(128));
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// 记录活跃的SwingWorker，便于管理
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private static final ConcurrentHashMap<String, SwingWorker<?, ?>> ACTIVE_WORKERS =
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new ConcurrentHashMap<>();
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/**
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* HEX字符串转字节数组
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* @param s HEX字符串
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* @return 字节数组
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*/
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private static byte[] hexStringToByteArray(String s) {
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if (s == null || s.isEmpty()) {
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return new byte[0];
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}
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s = s.replaceAll("\\s+", ""); // 移除空格
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int len = s.length();
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if (len % 2 != 0) {
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throw new IllegalArgumentException("HEX字符串长度必须为偶数，当前长度: " + len + ", 数据: " + s);
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}
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byte[] data = new byte[len / 2];
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for (int i = 0; i < len; i += 2) {
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int high = Character.digit(s.charAt(i), 16);
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int low = Character.digit(s.charAt(i + 1), 16);
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if (high == -1 || low == -1) {
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throw new IllegalArgumentException("无效的HEX字符: '" + s.charAt(i) + s.charAt(i + 1) + "' 在位置 " + i + "-" + (i+1) + ", 完整数据: " + s);
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}
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data[i / 2] = (byte) ((high << 4) + low);
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}
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return data;
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}
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/**
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* 字节数组转HEX字符串
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* @param bytes 字节数组
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* @return HEX字符串
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*/
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public static String bytesToHex(byte[] bytes) {
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if (bytes == null || bytes.length == 0) {
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return "";
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}
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StringBuilder sb = STRING_BUILDER_CACHE.get();
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sb.setLength(0);
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for (byte b : bytes) {
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sb.append(String.format("%02x", b));
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}
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return sb.toString();
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}
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/**
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* 获取当前时间字符串
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* @return 时间字符串
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*/
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private static String getCurrentTime() {
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return TIME_FORMATTER.get().format(new Date());
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}
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/**
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* 启用调试模式
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*/
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public static void enableDebugMode() {
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DEBUG_MODE = true;
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System.out.println("[" + getCurrentTime() + "] Sendmsg调试模式已启用");
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}
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/**
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* 禁用调试模式
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*/
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public static void disableDebugMode() {
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DEBUG_MODE = false;
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System.out.println("[" + getCurrentTime() + "] Sendmsg调试模式已禁用");
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}
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/**
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* 设置调试模式
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*/
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public static void setDebugMode(boolean debug) {
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DEBUG_MODE = debug;
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System.out.println("[" + getCurrentTime() + "] Sendmsg调试模式: " + (debug ? "启用" : "禁用"));
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}
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/**
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* 清理资源，防止内存泄漏
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*/
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public static void cleanup() {
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// 清理ThreadLocal资源
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TIME_FORMATTER.remove();
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STRING_BUILDER_CACHE.remove();
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if (DEBUG_MODE) {
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System.out.println("[" + getCurrentTime() + "] Sendmsg资源清理完成");
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}
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}
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/**
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* 获取活跃任务数量
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*/
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public static int getActiveTaskCount() {
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return ACTIVE_WORKERS.size();
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}
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}
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