How to use fastjson in springboot to deal with attribute values whose return value is null

This article mainly explains "how to use fastjson in springboot to deal with the attribute value returned as null". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn "how to use fastjson in springboot to deal with attribute values returned as null".

@ Configurationpublic class WebMvcConfig extends WebMvcConfigurationSupport {public FastJsonHttpMessageConverter fastJsonHttpMessageConverter () {FastJsonHttpMessageConverter fastJsonHttpMessageConverter = new FastJsonHttpMessageConverter (); FastJsonConfig fastJsonConfig = new FastJsonConfig (); / / todo is configured here, empty and null, and no fastJsonConfig.setSerializerFeatures (SerializerFeature.PrettyFormat) is returned; SerializeConfig serializeConfig = SerializeConfig.globalInstance; serializeConfig.put (LocalDateTime.class, LocalDateTimeSerializer.instance); fastJsonConfig.setSerializeConfig (serializeConfig); List mediaTypeList = new ArrayList (); mediaTypeList.add (MediaType.APPLICATION_JSON_UTF8) MediaTypeList.add (MediaType.APPLICATION_JSON); fastJsonHttpMessageConverter.setSupportedMediaTypes (mediaTypeList); fastJsonHttpMessageConverter.setFastJsonConfig (fastJsonConfig); return fastJsonHttpMessageConverter;}}

This can be configured in the returned information. If there is a null field, the front end will not display this information.

Knowledge point expansion:

Using fastjson in springboot to deal with the attribute value returned as null

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);}

You can then use fastjson annotations in the returned DTO, such as

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