解决GSON转Long型变为科学计数法的问题

一、依赖包

<dependency>
  <groupId>com.alibaba</groupId>
  <artifactId>fastjson</artifactId>
  <version>1.2.47</version>
</dependency>

<!-- gson -->
<dependency>
  <groupId>com.google.code.gson</groupId>
  <artifactId>gson</artifactId>
  <version>2.8.5</version>
</dependency>

二、代码部分

public static void main(String[] args)
    {
        String jsonStr = "{\"ret_code\":\"0\",\"ret_msg\":\"成功\",\"serial_number\":\"20181227101254HQFAW236359\",\"timestamp\":\"2018-12-27 02:13:01\",\"response_data\":{\"token\":\"196ad86b\",\"expiredMills\":1546481581194}}";
        RnrResponseVO<ResObtainTokenVO> resObtainTokenVORnrResponseVO = (RnrResponseVO<ResObtainTokenVO>) jsonToObjectLong(jsonStr,
                RnrResponseVO.builder().response_data(ResObtainTokenVO.class).build().getClass());
        log.info("resObtainTokenVORnrResponseVO={}", resObtainTokenVORnrResponseVO);
    }

    /**
     * json to VO实例 并且处理对应的科学计数法
     *
     * @param <T>
     * @param obj
     * @return
     * @exception
     * @date        2018/12/27 9:49
     */
    public static <T> Object jsonToObjectLong(String json, Class<T> obj)
    {
        return new Gson().fromJson(
                new GsonBuilder().setLongSerializationPolicy(LongSerializationPolicy.STRING).create()
                        .toJson(JSONObject.parse(json)), obj);
    }

三、转换后的结果

RnrResponseVO(ret_code=0, ret_msg=成功, serial_number=20181227101254HQFAW236359, timestamp=2018-12-27 02:13:01, response_data={expiredMills=1546481581194, token=196ad86b-cc31})