关于Object转Json方式及问题

JSONObject object = new JSONObject(entity);

JSONObject 是无序的

Gson对于时间类型需要额外处理

Gson gson = new GsonBuilder()
            .registerTypeAdapter(LocalDate.class,new LocalDateAdapter())
            .registerTypeAdapter(LocalDateTime.class,new LocalDateTimeAdapter())
            .create();

public class LocalDateAdapter implements JsonSerializer {
    @Override
    public JsonElement serialize(LocalDate localDate, Type type, JsonSerializationContext jsonSerializationContext) {
        return new JsonPrimitive(localDate.format(DateTimeFormatter.ofPattern("yyyy-MM-dd")));
    }
}

public class LocalDateTimeAdapter implements JsonSerializer {
    @Override
    public JsonElement serialize(LocalDateTime localDateTime, Type type, JsonSerializationContext jsonSerializationContext) {
        return new JsonPrimitive(localDateTime.format(DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss")));
    }
}