liruiqiang
1 week ago
4 changed files with 171 additions and 4 deletions
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7src/main/java/com/deepchart/controller/IndexController.java
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2src/main/java/com/deepchart/service/IndexService.java
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10src/main/java/com/deepchart/service/impl/IndexServiceImpl.java
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156src/main/java/com/deepchart/utils/EXPMAUtil.java
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package com.deepchart.utils; |
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import com.deepchart.entity.StockDailyData; |
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import java.time.LocalDate; |
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import java.util.*; |
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public class EXPMAUtil { |
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public static String analyzeEXPMA(List<StockDailyData> stockData, int shortPeriod, int longPeriod) { |
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if (stockData == null || stockData.size() < Math.max(shortPeriod, longPeriod)) { |
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return "数据不足，无法进行 EXPMA 分析。请至少提供 " + Math.max(shortPeriod, longPeriod) + " 天数据。"; |
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} |
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// 1. 计算 EXPMA |
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List<Double> expmaShort = calculateSingleExpma(stockData, shortPeriod); |
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List<Double> expmaLong = calculateSingleExpma(stockData, longPeriod); |
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int n = stockData.size(); |
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LocalDate latestDate = stockData.get(n - 1).getDate(); |
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double latestPrice = stockData.get(n - 1).getClosePrice(); |
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double currentShort = expmaShort.get(n - 1); |
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double currentLong = expmaLong.get(n - 1); |
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StringBuilder analysis = new StringBuilder(); |
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analysis.append("📊 EXPMA 趋势分析（截至 ").append(latestDate).append("）\n"); |
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analysis.append(" • 短期EXPMA(").append(shortPeriod).append("): ").append(String.format("%.2f", currentShort)).append("\n"); |
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analysis.append(" • 长期EXPMA(").append(longPeriod).append("): ").append(String.format("%.2f", currentLong)).append("\n"); |
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analysis.append(" • 当前收盘价: ").append(String.format("%.2f", latestPrice)).append("\n\n"); |
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// 2. 判断多头/空头排列 |
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boolean isBullish = currentShort > currentLong; |
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boolean shortUp = n >= 2 && expmaShort.get(n - 1) > expmaShort.get(n - 2); |
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boolean longUp = n >= 2 && expmaLong.get(n - 1) > expmaLong.get(n - 2); |
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if (isBullish && shortUp && longUp) { |
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analysis.append("📈 趋势状态：【多头排列】\n"); |
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analysis.append(" → 市场处于上升趋势，短期均线在长期均线上方且双双上行。\n"); |
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if (latestPrice >= currentShort) { |
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analysis.append(" → 股价站稳短期EXPMA之上，强势格局。\n"); |
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} else { |
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analysis.append(" → 股价回踩短期EXPMA，若不破可视为加仓机会。\n"); |
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} |
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} else if (!isBullish && !shortUp && !longUp) { |
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analysis.append("📉 趋势状态：【空头排列】\n"); |
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analysis.append(" → 市场处于下降趋势，短期均线在长期均线下方且双双下行。\n"); |
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if (latestPrice <= currentShort) { |
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analysis.append(" → 股价受压于短期EXPMA，弱势明显，建议观望。\n"); |
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} else { |
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analysis.append(" → 股价反弹至短期EXPMA附近，可能是做空或减仓时机。\n"); |
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} |
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} else { |
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analysis.append("🔄 趋势状态：【震荡整理】\n"); |
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analysis.append(" → 均线缠绕或方向不一致，市场缺乏明确趋势。\n"); |
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} |
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// 3. 检测最近是否发生金叉/死叉（过去5日内） |
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boolean goldenCross = false; |
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boolean deathCross = false; |
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int crossDayIndex = -1; |
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String crossType = ""; |
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// 从后往前找最近一次交叉（最多看最近10天） |
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int lookback = Math.min(10, n - 1); |
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for (int i = n - 1; i >= lookback; i--) { |
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double shortToday = expmaShort.get(i); |
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double longToday = expmaLong.get(i); |
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double shortYesterday = expmaShort.get(i - 1); |
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double longYesterday = expmaLong.get(i - 1); |
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// 金叉：昨日 short <= long，今日 short > long |
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if (shortYesterday <= longYesterday && shortToday > longToday) { |
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goldenCross = true; |
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crossDayIndex = i; |
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crossType = "黄金交叉"; |
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break; |
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} |
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// 死叉：昨日 short >= long，今日 short < long |
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if (shortYesterday >= longYesterday && shortToday < longToday) { |
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deathCross = true; |
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crossDayIndex = i; |
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crossType = "死亡交叉"; |
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break; |
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} |
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} |
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if (goldenCross || deathCross) { |
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LocalDate crossDate = stockData.get(crossDayIndex).getDate(); |
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analysis.append("\n🔔 近期信号：") |
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.append(crossType) |
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.append("（").append(crossDate).append("）\n"); |
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if (goldenCross) { |
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analysis.append(" → 短期动能转强，可视为潜在买入信号。\n"); |
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if (currentLong > expmaLong.get(Math.max(0, crossDayIndex - 5))) { |
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analysis.append(" → 且长期EXPMA已走平或向上，信号可靠性较高。\n"); |
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} |
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} else { |
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analysis.append(" → 短期动能转弱，可视为潜在卖出信号。\n"); |
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} |
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} |
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// 4. 支撑/阻力提示 |
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if (isBullish) { |
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double support = currentShort; |
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if (Math.abs(latestPrice - support) / support < 0.01) { // 价格接近短期EXPMA（1%内） |
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analysis.append("\n🛡️ 支撑观察：当前股价接近短期EXPMA（") |
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.append(String.format("%.2f", support)) |
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.append("），若在此企稳，可能延续升势。\n"); |
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} |
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} else if (!isBullish) { |
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double resistance = currentShort; |
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if (Math.abs(latestPrice - resistance) / resistance < 0.01) { |
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analysis.append("\n⚠️ 阻力观察：当前股价接近短期EXPMA（") |
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.append(String.format("%.2f", resistance)) |
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.append("），若遇阻回落，可能延续跌势。\n"); |
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} |
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} |
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// 5. 总结建议 |
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analysis.append("\n📌 操作建议：\n"); |
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if (isBullish && shortUp) { |
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analysis.append(" • 多头趋势中，持股待涨；回调至短期EXPMA附近可考虑低吸。\n"); |
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} else if (!isBullish && !shortUp) { |
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analysis.append(" • 空头趋势中，避免抄底；反弹至短期EXPMA附近可考虑离场。\n"); |
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} else { |
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analysis.append(" • 市场方向不明，建议结合成交量或震荡指标（如KDJ）辅助决策。\n"); |
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} |
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analysis.append("\n❗ 注意：EXPMA为趋势跟踪指标，在横盘震荡市中易产生假信号，请勿单独依赖。"); |
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return analysis.toString(); |
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} |
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// 辅助方法：计算单周期 EXPMA |
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private static List<Double> calculateSingleExpma(List<StockDailyData> data, int period) { |
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List<Double> expma = new ArrayList<>(data.size()); |
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double alpha = 2.0 / (period + 1); |
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double value = 0.0; |
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for (int i = 0; i < data.size(); i++) { |
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double price = data.get(i).getClosePrice(); |
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if (i == 0) { |
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// 初始值用 SMA(period) |
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double sum = 0; |
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int count = Math.min(period, data.size()); |
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for (int j = 0; j < count; j++) { |
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sum += data.get(j).getClosePrice(); |
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} |
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value = sum / count; |
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} else { |
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value = alpha * price + (1 - alpha) * value; |
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} |
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expma.add(value); |
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} |
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return expma; |
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} |
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} |
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