fix bug

blade-service-api/blade-system-api/src/main/java/org/springblade/system/cache/RegionCache.java

@@ -31,6 +31,10 @@ import org.springblade.core.tool.utils.SpringUtil;
 import org.springblade.system.pojo.entity.Region;
 import org.springblade.system.feign.ISysClient;
 
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.Callable;
+
 import static org.springblade.core.cache.constant.CacheConstant.SYS_CACHE;
 
 /**
@@ -50,6 +54,8 @@ public class RegionCache {
 	public static final int VILLAGE_LEVEL = 5;
 
 	private static final String REGION_CODE = "region:code:";
+	private static final String REGION_TREE_CACHE = "region:tree";
+	private static final String REGION_LAZY_TREE = "lazy-tree:";
 
 	private static ISysClient sysClient;
 
@@ -73,4 +79,38 @@ public class RegionCache {
 		});
 	}
 
+	/**
+	 * 获取行政区划懒加载树
+	 *
+	 * @param parentCode 父区划编号
+	 * @param param 查询参数
+	 * @param loader 数据加载器
+	 * @return 懒加载树
+	 */
+	public static List<Map<String, Object>> getLazyTree(
+		String parentCode,
+		Map<String, Object> param,
+		Callable<List<Map<String, Object>>> loader) {
+		Map<String, Object> query = param == null ? Map.of() : param;
+		String cacheKey = String.join("|",
+			cacheKeyPart(parentCode),
+			cacheKeyPart(query.get("code")),
+			cacheKeyPart(query.get("name")),
+			cacheKeyPart(query.get("regionLevel"))
+		);
+		return CacheUtil.get(REGION_TREE_CACHE, REGION_LAZY_TREE, cacheKey, loader, Boolean.FALSE);
+	}
+
+	/**
+	 * 清除行政区划懒加载树缓存
+	 */
+	public static void clearLazyTree() {
+		CacheUtil.clear(REGION_TREE_CACHE, Boolean.FALSE);
+	}
+
+	private static String cacheKeyPart(Object value) {
+		String text = value == null ? "" : String.valueOf(value);
+		return text.length() + ":" + text;
+	}
+
 }