java Long型数据返回到前端失进度问题解决

直接在springmvc配置中增加信息转换。亲测可用。简单粗暴

@Override
public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {MappingJackson2HttpMessageConverter jackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();ObjectMapper objectMapper = new ObjectMapper();SimpleModule simpleModule = new SimpleModule();simpleModule.addSerializer(Long.class, ToStringSerializer.instance);simpleModule.addSerializer(Long.TYPE, ToStringSerializer.instance);objectMapper.registerModule(simpleModule);objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);//忽略未知字段jackson2HttpMessageConverter.setObjectMapper(objectMapper);converters.add(jackson2HttpMessageConverter);
}

如果对以上代码。不太清楚的。可以翻看下，springmvc的HttpMessageConvert。括号需要实现WebMvcConfigurer去增加信息转换