增加 StockStrategy 服务，数据表建立及批量更新方法重写。解决多数据源配置 mapper-locations

无法识别并读取到对应数据源的 mapper.xml 及其 statement 方法的问题

src/main/java/quant/rich/emoney/util/DateUtils.java

@@ -0,0 +1,58 @@
+package quant.rich.emoney.util;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+public final class DateUtils {
+
+    // 缓存 formatter，行为接近 fastjson2
+    private static final Map<String, DateTimeFormatter> FORMATTER_CACHE =
+            new ConcurrentHashMap<>();
+
+    private DateUtils() {
+    }
+
+    /**
+     * 格式化 LocalDateTime
+     *
+     * @param dateTime LocalDateTime
+     * @param pattern  日期格式，如 yyyy-MM-dd HH:mm:ss
+     * @return 格式化后的字符串
+     */
+    public static String format(LocalDateTime dateTime, String pattern) {
+        if (dateTime == null) {
+            return null;
+        }
+        if (pattern == null || pattern.isEmpty()) {
+            throw new IllegalArgumentException("pattern must not be null or empty");
+        }
+
+        DateTimeFormatter formatter =
+                FORMATTER_CACHE.computeIfAbsent(pattern, DateTimeFormatter::ofPattern);
+
+        return dateTime.format(formatter);
+    }
+    
+    /**
+     * 将给定字符串转换成 LocalDate
+     * @param value 如 "20260101"
+     * @param pattern 日期格式，如 yyyyMMdd
+     * @return
+     */
+    public static LocalDate parse(String value, String pattern) {
+        if (value == null) {
+            return null;
+        }
+        if (pattern == null || pattern.isEmpty()) {
+            throw new IllegalArgumentException("pattern must not be null or empty");
+        }
+        DateTimeFormatter formatter =
+                FORMATTER_CACHE.computeIfAbsent(pattern, DateTimeFormatter::ofPattern);
+        
+        LocalDate date = LocalDate.parse(value, formatter);
+        return date;
+    }
+}

src/main/java/quant/rich/emoney/util/StockCodeUtils.java

@@ -0,0 +1,90 @@
+package quant.rich.emoney.util;
+
+public class StockCodeUtils {
+    
+    /**
+     * 从 goodsId 转换为 tsCode
+     * @param goodsId
+     * @return
+     */
+    public static String goodsIdToTsCode(Integer goodsId) {
+        if (goodsId == null || goodsId < 0) {
+            throw new IllegalArgumentException("goodsId 不能为空或为负数");
+        }
+
+        final String s = goodsId.toString();
+        final int len = s.length();
+
+        switch (len) {
+            case 6:
+                // 6 位默认 SH
+                return s + ".SH";
+
+            case 7:
+                // 7 位默认 SZ 或 BJ
+                if (!s.startsWith("1")) {
+                    throw new IllegalArgumentException("无法将 goodsId " + s + " 转换为 tsCode");
+                }
+
+                char second = s.charAt(1);
+                String core = s.substring(1);
+
+                if (second == '9') {
+                    return core + ".BJ";
+                }
+                return core + ".SZ";
+
+            default:
+                throw new IllegalArgumentException("无法将 goodsId " + s + " 转换为 tsCode");
+        }
+    }
+    
+    /**
+     * 从 tsCode 转换成 goodsId
+     * @param tsCode
+     * @return
+     */
+    public static Integer tsCodeToGoodsId(String tsCode) {
+        if (tsCode == null || tsCode.isBlank()) {
+            throw new IllegalArgumentException("tsCode 不能为空");
+        }
+
+        String s = tsCode.trim().toUpperCase();
+
+        // 期望格式：XXX.SZ / XXX.SH / XXX.BJ
+        int dot = s.indexOf('.');
+        if (dot <= 0 || dot == s.length() - 1) {
+            throw new IllegalArgumentException("tsCode 格式无效: " + tsCode);
+        }
+
+        String code = s.substring(0, dot);
+        String market = s.substring(dot + 1);
+
+        if (!code.matches("\\d+")) {
+            throw new IllegalArgumentException("tsCode 数字部分无效: " + tsCode);
+        }
+
+        switch (market) {
+            case "SH":
+                if (code.length() == 6) {
+                    return Integer.valueOf(code);
+                }
+                break;
+
+            case "SZ":
+                if (code.length() == 6) {
+                    return Integer.valueOf("1" + code);
+                }
+                break;
+
+            case "BJ":
+                if (code.length() == 6) {
+                    return Integer.valueOf("1" + code);
+                }
+                break;
+        }
+
+        throw new IllegalArgumentException("无法将 tsCode " + tsCode + " 转换为 goodsId");
+    }
+
+}