@EnableWebMvc
@Configuration
public class WebDataConvertConfig implements WebMvcConfigurer {
        public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
            MappingJackson2HttpMessageConverter jackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();
            ObjectMapper objectMapper = new ObjectMapper();
            /**
             * 序列換成json時,將所有的long變成string
             * 因為js中得數(shù)字類型不能包含所有的java long值
             */
            SimpleModule simpleModule = new SimpleModule();
            simpleModule.addSerializer(Long.class, ToStringSerializer.instance);
            simpleModule.addSerializer(Long.TYPE, ToStringSerializer.instance);
            objectMapper.registerModule(simpleModule);
            jackson2HttpMessageConverter.setObjectMapper(objectMapper);
            converters.add(jackson2HttpMessageConverter);
        }

@Configuration
public class JacksonConfig {

 /**
  * Jackson全局轉化long類型為String，解決jackson序列化時long類型缺失精度問題
  * @return Jackson2ObjectMapperBuilderCustomizer 注入的對象
  */
    @Bean
    public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() {
        return jacksonObjectMapperBuilder -> jacksonObjectMapperBuilder
                .serializerByType(Long.class, ToStringSerializer.instance)
                .serializerByType(Long.TYPE, ToStringSerializer.instance);
    }
}

spring:
  jackson:
  #將所有的number類型轉為String返回
    generator:
      write_numbers_as_strings: true
    #格式化返回時間 yyyy-MM-dd HH:mm:ss
    date-format: yyyy-MM-dd HH:mm:ss
    time-zone: GMT+8