1

dd

2025-12-26 73e608df889ebeca1c87cb8d77676923b8872a83

 src/main/java/com/nq/service/impl/StockServiceImpl.java

@@ -433,13 +433,40 @@


        /*股票日线-K线*/
    // 只需要缓存一个最近返回的Object
    private static Object lastResult = null;
    private static long lastExecuteTime = 0;
    private static final long MIN_INTERVAL_MS = 3000;
    private static final Object cacheLock = new Object();

    @Override
    public Object getKData(String pid, String interval, String stockType) {
        try {
            Thread.sleep(3000);
        }catch (Exception e){
            e.printStackTrace();
        long currentTime = System.currentTimeMillis();

        // 第一次快速检查（不加锁）
        if (lastResult != null && (currentTime - lastExecuteTime) < MIN_INTERVAL_MS) {
            return lastResult;
        }

        // 同步块内再次检查并更新
        synchronized (cacheLock) {
            currentTime = System.currentTimeMillis();
            if (lastResult != null && (currentTime - lastExecuteTime) < MIN_INTERVAL_MS) {
                return lastResult;
            }

            // 获取新数据
            Object newResult = doGetKData(pid, interval, stockType);

            // 更新缓存
            lastResult = newResult;
            lastExecuteTime = System.currentTimeMillis();

            return newResult;
        }
    }

    private Object doGetKData(String pid, String interval, String stockType) {
        EStockType eStockType = EStockType.getEStockTypeByCode(stockType);
        Object object = HttpUtil.get(eStockType.stockUrl + "kline?pid=" + pid + "&interval=" + interval + "&key=" + eStockType.stockKey);
        Gson gson = new Gson();
@@ -449,12 +476,13 @@
        BigDecimal nowPrice = iPriceServices.getNowPrice(stock.getStockCode());
        Map singleStock = getSingleStock(stock.getStockCode());
        StockVO stockVO = (StockVO)singleStock.get("stock");
        // 修改 List 中的最后一条数据

        kData lastData = dataList.get(dataList.size() - 1);
        lastData.setC(nowPrice.toString());
        lastData.setO(stockVO.getOpen_px());
        lastData.setH(stockVO.getToday_max());
        lastData.setL(stockVO.getToday_min());

        return gson.toJson(dataList);
    }