Spring Boot返回前端Long型丢失精度 后两位 变成00

亲测管用 在恒标云考试系统有源代码。

public class WebMvcConfiguration implements WebMvcConfigurer {

@Override

public 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(0,jackson2HttpMessageConverter);

}

}