springboot中用fastjson处理返回值为null的属性值
我们先来看代码:
@Configuration public class WebMvcConfig extends WebMvcConfigurationSupport { public FastJsonHttpMessageConverter fastJsonHttpMessageConverter() { FastJsonHttpMessageConverter fastJsonHttpMessageConverter = new FastJsonHttpMessageConverter(); FastJsonConfig fastJsonConfig = new FastJsonConfig(); //todo 这里进行配置,空和null,不返回 fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat); SerializeConfig serializeConfig = SerializeConfig.globalInstance; serializeConfig.put(LocalDateTime.class, LocalDateTimeSerializer.instance); fastJsonConfig.setSerializeConfig(serializeConfig); List<MediaType> mediaTypeList = new ArrayList<>(); mediaTypeList.add(MediaType.APPLICATION_JSON_UTF8); mediaTypeList.add(MediaType.APPLICATION_JSON); fastJsonHttpMessageConverter.setSupportedMediaTypes(mediaTypeList); fastJsonHttpMessageConverter.setFastJsonConfig(fastJsonConfig); return fastJsonHttpMessageConverter; } }
配置上这个可以在返回的信息中,假如说有null字段的时候,前端不会进行显示这种信息
知识点扩展:
springboot中用fastjson处理返回值为null的属性值
@Bean public HttpMessageConverters fastJsonHttpMessageConverters(){ FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter(); FastJsonConfig fastJsonConfig = new FastJsonConfig(); fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat); fastJsonConfig.setDateFormat("yyyy-MM-dd"); fastConverter.setFastJsonConfig(fastJsonConfig); HttpMessageConverter<?> converter = fastConverter; return new HttpMessageConverters(converter); }
然后就可以在返回的DTO中使用fastjson的注解,比如
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