springboot如何防止Long类型精度丢失

配置

@Configuration
public class WebMvcAutoConfiguration {

    @Bean
    @Primary
    public ObjectMapper jacksonObjectMapper(Jackson2ObjectMapperBuilder builder) {
        final JavaTimeModule module = new JavaTimeModule();
//        module.addSerializer(LocalDateTime.class, LocalDateTimeSerializer.INSTANCE);
//        module.addDeserializer(LocalDateTime.class, LocalDateTimeDeserializer.INSTANCE);

        module.addSerializer(Long.class, ToStringSerializer.instance);
        module.addSerializer(Long.TYPE, ToStringSerializer.instance);

        return builder.createXmlMapper(false).modulesToInstall(module).build();
    }
}