@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(zhuǎn)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() {
		Jackson2ObjectMapperBuilderCustomizer cunstomizer = new Jackson2ObjectMapperBuilderCustomizer() {
			
			@Override
			public void customize(Jackson2ObjectMapperBuilder jacksonObjectMapperBuilder) {
			jacksonObjectMapperBuilder.serializerByType(Long.TYPE, ToStringSerializer.instance);
				jacksonObjectMapperBuilder.serializerByType(Long.class, ToStringSerializer.instance);
			}
		};
		return cunstomizer;
	}