initial commit: lottery 项目集（三工程统一管理）

- apps/lotteryServer, lotteryCapture, lotteryOpen 三个业务工程
- 忽略 archive/, tools/, infra/data/ 大目录与敏感配置文件
- 移除 lotteryServer 原嵌套 git，并入顶层统一管理

apps/lotteryServer/src/main/java/javautils/json/JacksonUtil.java

@@ -0,0 +1,32 @@
+package javautils.json;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+public class JacksonUtil {
+	
+	public static String toJSON(Object o) {
+		try {
+			ObjectMapper objectMapper = new ObjectMapper();
+			return objectMapper.writeValueAsString(o);
+		} catch (JsonProcessingException e) {
+			e.printStackTrace();
+		}
+		return null;
+	}
+	
+	public static <T> T toObject(String json, Class<T> clazz) {
+		try {
+			ObjectMapper objectMapper = new ObjectMapper();
+			return objectMapper.readValue(json, clazz);
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+		return null;
+	}
+	
+	public static void main(String[] args) {
+		
+	}
+
+}