spring-boot-webflux 中未使用已配置的 ObjectMapper [英] Configured ObjectMapper not used in spring-boot-webflux

问题描述

我在 objectmapperbuilder 配置中配置了 mixin，使用常规的 spring web 控制器，根据 mixins 输出数据.然而，使用 webflux，具有返回 Flow 或 Mono 的方法的控制器会将数据序列化，就像对象映射器是默认的一样.

I have mixins configured in my objectmapperbuilder config, using the regular spring web controller, the data outputted according to the mixins. However using webflux, a controller with a method returning a Flow or Mono have the data serialized like if the objectmapper a default one.

如何让 webflux 强制使用对象映射器配置?

How to get webflux to enforce an objectmapper configuration to be used ?

示例配置:

@Bean
JavaTimeModule javatimeModule(){
    return new JavaTimeModule();
}

@Bean
Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer(){
return jacksonObjectMapperBuilder ->  jacksonObjectMapperBuilder.featuresToEnable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS)
                                                                    .mixIn(MyClass.class, MyClassMixin.class);
}

推荐答案

我实际上是通过单步执行 init 代码找到了我的解决方案:

I actually found my solution by stepping through the init code:

@Configuration
public class Config {

    @Bean
    JavaTimeModule javatimeModule(){
        return new JavaTimeModule();
    }

    @Bean
    Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer(){
    return jacksonObjectMapperBuilder -> jacksonObjectMapperBuilder.featuresToEnable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS)
            .mixIn(MyClass.class, MyClassMixin.class);
    }


    @Bean
    Jackson2JsonEncoder jackson2JsonEncoder(ObjectMapper mapper){
       return new Jackson2JsonEncoder(mapper);
    }

    @Bean
    Jackson2JsonDecoder jackson2JsonDecoder(ObjectMapper mapper){
        return new Jackson2JsonDecoder(mapper);
    }

    @Bean
    WebFluxConfigurer webFluxConfigurer(Jackson2JsonEncoder encoder, Jackson2JsonDecoder decoder){
        return new WebFluxConfigurer() {
            @Override
            public void configureHttpMessageCodecs(ServerCodecConfigurer configurer) {
                configurer.defaultCodecs().jackson2Encoder(encoder);
                configurer.defaultCodecs().jackson2Decoder(decoder);
            }
        };

    }
}

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