message:{"msgHeader":{"ID":"INTYQ:INT_KFB:YC","T":"2023-11-20 14:32:49.586","VT":"realvalue"},使用java解析以上json数据

以下是使用Java解析JSON数据的示例代码：

import org.json.JSONObject;

public class JsonParser {
    public static void main(String[] args) {
        String jsonStr = "{\"msgHeader\":{\"ID\":\"INTYQ:INT_KFB:YC\",\"T\":\"2023-11-20 14:32:49.586\",\"VT\":\"realvalue\"}}";
        JSONObject jsonObj = new JSONObject(jsonStr);        JSONObject msgHeaderObj = jsonObj.getJSONObject("msgHeader");        String id = msgHeaderObj.getString("ID");
        String t = msgHeaderObj.getString("T");
        String vt = msgHeaderObj.getString("VT");        System.out.println("ID: " + id);
        System.out.println("T: " + t);
        System.out.println("VT: " + vt);
    }
}