返回数据统一LONG -> String

    /**
     * 重写SpringBoot 返回数据转换器 LONG -> String
     */
    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        /**
         * 排除掉原来的MappingJackson2HttpMessageConverter
         */
        List<MappingJackson2HttpMessageConverter> originalConverters = new ArrayList<>();
        for (HttpMessageConverter<?> converter : converters) {
            if (converter instanceof MappingJackson2HttpMessageConverter) {
                originalConverters.add((MappingJackson2HttpMessageConverter) converter);
            }
        }
        if (CollectionUtils.isNotEmpty(originalConverters)) {
            converters.removeAll(originalConverters);
        }
        MappingJackson2HttpMessageConverter jackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();
        ObjectMapper objectMapper = new ObjectMapper();

        /**
         * 将long类型的数据转为String类型
         */
        SimpleModule simpleModule = new SimpleModule();
        simpleModule.addSerializer(Long.class, ToStringSerializer.instance);
        simpleModule.addSerializer(Long.TYPE, ToStringSerializer.instance);
        simpleModule.addSerializer(long.class, ToStringSerializer.instance);
        objectMapper.registerModule(simpleModule);
        jackson2HttpMessageConverter.setObjectMapper(objectMapper);
        converters.add(jackson2HttpMessageConverter);
    }