package jiexi;
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public class Dell55AA12HighPerf {
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// 协议常量
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@SuppressWarnings("unused")
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private static final String HEADER = "55AA12"; // 协议头
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private static final int MIN_LENGTH = 34; // 最小数据长度
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private static final ThreadLocal<ParseResult> RESULT_CACHE = // 解析结果缓存
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ThreadLocal.withInitial(ParseResult::new);
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// 重用StringBuilder减少内存分配
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private static final ThreadLocal<StringBuilder> hexDataBuilder =
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ThreadLocal.withInitial(() -> new StringBuilder(64));
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// 解析结果类
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public static class ParseResult {
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public String tagId; // 标签ID
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public int sequenceNum; // 序列号
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public int power; // 电量
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public int vibrationState; // 振动状态
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public boolean tagRemoved; // 标签移除状态
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public boolean isSleeping; // 休眠状态
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public boolean isStatic; // 静止状态
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public boolean sosButtonPressed; // SOS按钮状态
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public int tagHeight; // 标签高度
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public int anchorCount; // 锚点数量
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public String[] anchorIds = new String[0]; // 锚点ID数组
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public int[] distances = new int[0]; // 距离数组
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public int[] anchorPowers = new int[0]; // 锚点电量数组
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public int[] signalStrengths1 = new int[0]; // 信号强度1
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public int[] signalStrengths2 = new int[0]; // 信号强度2
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// 重置方法
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public void reset() {
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tagId = "";
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sequenceNum = 0;
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power = 0;
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vibrationState = 0;
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tagRemoved = false;
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isSleeping = false;
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isStatic = false;
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sosButtonPressed = false;
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tagHeight = 0;
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anchorCount = 0;
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// 数组保持长度，只重置计数
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}
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}
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/**
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* 解析协议数据
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* @param message 原始16进制字符串
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* @return 解析结果对象（线程安全）
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*/
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public static ParseResult parse(String message,String ip,int port) {
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// 长度校验
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if (message == null || message.length() < MIN_LENGTH) {
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return null;
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}
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// 协议头校验
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if (!(message.charAt(0) == '5' &&
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message.charAt(1) == '5' &&
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message.charAt(2) == 'A' &&
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message.charAt(3) == 'A' &&
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message.charAt(4) == '1' &&
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message.charAt(5) == '2')) {
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return null;
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}
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// 获取线程本地结果对象
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ParseResult result = RESULT_CACHE.get();
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result.reset();
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// 获取字符缓冲区
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char[] chars = HexUtils.getThreadLocalBuffer();
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message.getChars(0, Math.min(message.length(), chars.length), chars, 0);
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// 解析数据长度
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int dataLength = (HexUtils.fastHexToByte(chars[6], chars[7]) * 2) + 8;
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if (message.length() != dataLength) {
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return null;
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}
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// 解析标签信息
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parseTagInfo(chars, result);
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// 解析锚点信息
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parseAnchorInfo(chars, result);
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/* if (MessageViewPanel.isWindowVisible) {
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// 组装基站信息
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StringBuilder ids = new StringBuilder();
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StringBuilder dists = new StringBuilder();
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StringBuilder powers = new StringBuilder();
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for (int i = 0; i < result.anchorCount; i++) {
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if (i > 0) {
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ids.append(',');
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dists.append(',');
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powers.append(',');
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}
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ids.append(result.anchorIds[i]);
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dists.append(result.distances[i]);
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powers.append(result.anchorPowers[i]);
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}
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StringBuilder sb = hexDataBuilder.get();
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sb.append("55AA12 ,Seq:").append(result.sequenceNum)
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.append(",Tagid:").append(result.tagId)
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.append(",Power: ").append(result.power).append("%")
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.append(",button:").append(result.sosButtonPressed)
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.append(",Static:").append(result.isStatic )
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.append(",Sleep:").append(result.isSleeping )
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.append(",State:").append(result.vibrationState )
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.append(",TagRemoved:").append(result.tagRemoved)
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.append(",TagHeight:").append(result.tagHeight)
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.append(",AncNum:").append(result.anchorCount)
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.append(",AncIds:[").append(ids)
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.append("],Dis:[").append(dists)
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.append("],AncPowers:[").append(powers).append("]").append('\n');
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MessageViewPanel.showData(sb.toString(), ip, port, 0, "UDPA", "55AA12",result.tagId);
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}*/
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return result;
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}
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/**
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* 解析标签信息
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*/
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private static void parseTagInfo(char[] chars, ParseResult result) {
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// 标签ID（小端序）
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result.tagId = new String(new char[] {
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chars[10], chars[11], // 高字节
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chars[8], chars[9] // 低字节
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});
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// 序列号（小端序）
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result.sequenceNum = (HexUtils.fastHexToByte(chars[14], chars[15]) << 8 |
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HexUtils.fastHexToByte(chars[12], chars[13]));
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// 电量
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result.power = HexUtils.fastHexToByte(chars[16], chars[17]);
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// 状态标志
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int buttonState = HexUtils.fastHexToByte(chars[18], chars[19]);
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result.vibrationState = (buttonState >> 5) & 1;
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result.tagRemoved = ((buttonState >> 3) & 1) == 1;
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result.isSleeping = ((buttonState >> 2) & 1) == 1;
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result.isStatic = ((buttonState >> 1) & 1) == 1;
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result.sosButtonPressed = (buttonState & 1) == 1;
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// 标签高度（小端序）
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result.tagHeight = (HexUtils.fastHexToByte(chars[22], chars[23]) << 8 |
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HexUtils.fastHexToByte(chars[20], chars[21]));
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}
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/**
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* 解析锚点信息
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*/
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private static void parseAnchorInfo(char[] chars, ParseResult result) {
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// 锚点数量
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result.anchorCount = HexUtils.fastHexToByte(chars[32], chars[33]);
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if (result.anchorCount == 0) return;
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// 动态扩展数组
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if (result.anchorIds.length < result.anchorCount) {
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result.anchorIds = new String[result.anchorCount];
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result.distances = new int[result.anchorCount];
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result.anchorPowers = new int[result.anchorCount];
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result.signalStrengths1 = new int[result.anchorCount];
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result.signalStrengths2 = new int[result.anchorCount];
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}
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int baseIndex = 34; // 锚点ID起始位置
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int distanceStart = baseIndex + result.anchorCount * 4; // 距离起始位置
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int powerStart = distanceStart + result.anchorCount * 4; // 电量起始位置
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// 解析锚点ID（小端序）
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for (int i = 0; i < result.anchorCount; i++) {
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int idOffset = baseIndex + i * 4;
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result.anchorIds[i] = new String(new char[]{
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chars[idOffset + 2], // 高字节1
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chars[idOffset + 3], // 高字节2
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chars[idOffset], // 低字节1
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chars[idOffset + 1] // 低字节2
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});
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}
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// 解析距离（有符号整数处理）
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for (int i = 0; i < result.anchorCount; i++) {
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int distOffset = distanceStart + i * 4;
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int distLow = HexUtils.fastHexToByte(chars[distOffset], chars[distOffset + 1]);
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int distHigh = HexUtils.fastHexToByte(chars[distOffset + 2], chars[distOffset + 3]);
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int rawDistance = (distHigh << 8) | distLow;
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result.distances[i] = (rawDistance > 0x7FFF)
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? (rawDistance - 0x10000)
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: rawDistance;
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}
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// 解析锚点电量
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for (int i = 0; i < result.anchorCount; i++) {
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int powerOffset = powerStart + i * 2;
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result.anchorPowers[i] = HexUtils.fastHexToByte(chars[powerOffset], chars[powerOffset + 1]);
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}
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}
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}
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