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public static Map<String, Object> objectToMap(Object obj) throws Exception {
    if(obj == null){
    return null;
    }
    Map<String, Object> map = new HashMap<>();
    Field[] declaredFields = obj.getClass().getDeclaredFields();
    for (Field field : declaredFields) {
    field.setAccessible(true);
    map.put(field.getName(), field.get(obj));
    }
    return map;
}