问题

后盾接管 Json 参数时有以下要求：

  • 指定工夫格局
  • 疏忽不辨认的字段
  • 疏忽不辨认的枚举

个别是配置 ObjectMapper 即可失效

配置 ObjectMapper

@Bean@Primarypublic ObjectMapper objectMapper() {    return new ObjectMapper()            .disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)            .enable(DeserializationFeature.READ_UNKNOWN_ENUM_VALUES_AS_NULL)            .setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"));}

如上配置没有失效

配置 Jackson2ObjectMapperBuilderCustomizer

@Bean@Primarypublic Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() {    return builder -> builder            .featuresToDisable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)            .featuresToEnable(DeserializationFeature.READ_UNKNOWN_ENUM_VALUES_AS_NULL)            .simpleDateFormat("yyyy-MM-dd HH:mm:ss");}

也不失效

解决方案

解决方案援用自 Jackson2ObjectMapperBuilderCustomizer不失效解决

不失效的起因个别是 MappingJackson2HttpMessageConverter 对象在程序启动时创立了多个，咱们只有将多余的去掉，并从新增加 MappingJackson2HttpMessageConverter 的 bean 就能够了

问题本源

根底包中配置了 MappingJackson2HttpMessageConverter，导致应用服务工程中配置的 ObjectMapper 有效

@Configurationpublic class WebMvcConfig implements WebMvcConfigurer {    @Autowired    private RequestApiInterceptor requestApiInterceptor;    @Override    public void addInterceptors(InterceptorRegistry registry) {        registry.addInterceptor(requestApiInterceptor).addPathPatterns("/**");    }    @Bean    public RequestApiInterceptor restfulApiInterceptor() {        return new RequestApiInterceptor();    }    /**     * 解决controller返回string类型数据谬误     */    @Override    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {        converters.add(0, new MappingJackson2HttpMessageConverter());    }}

要害代码

在应用服务工程中按如下配置性能失效

@Configurationpublic class ConvertConfiguration implements WebMvcConfigurer {    public MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter() {        ObjectMapper objectMapper = new ObjectMapper()            .disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)            .enable(DeserializationFeature.READ_UNKNOWN_ENUM_VALUES_AS_NULL)            .setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"));        return new MappingJackson2HttpMessageConverter(objectMapper);    }    @Override    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {        converters.removeIf(MappingJackson2HttpMessageConverter.class::isInstance);        converters.add(0, mappingJackson2HttpMessageConverter());    }}