关于java:Spring-Boot返回前端Long型丢失精度-后两位-变成00

亲测管用 在恒标云考试零碎有源代码。

@Configurationpublic class WebMvcConfiguration implements WebMvcConfigurer {@Overridepublic void configureMessageConverters(List<HttpMessageConverter<?>> converters) {    MappingJackson2HttpMessageConverter jackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();    ObjectMapper objectMapper = new ObjectMapper();    objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);    /**     * 序列换成json时,将所有的long变成string     * 因为js中得数字类型不能蕴含所有的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(0,jackson2HttpMessageConverter);    }}