springboot 拦截器导致fastjson 大小写失效

本文链接：https://blog.youkuaiyun.com/weixin_41849346/article/details/134040689

文章讲述了在Springboot应用中，由于拦截器影响了FastJson的正常工作，通过配置Cors和清除默认Json转换器，以及自定义FastJsonConfig解决了返回体JSON格式问题，确保正确序列化。

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实体类

public class Info{
    @JsonFeild(“sDqClose”)
	private String sDqClose;
	private String sDqHigh;
}

拦截器


@Configuration
@EnableWebMvc
public class WebMvcConfigurerConfig implements WebMvcConfigurer {

    private CorsConfiguration buildConfig() {
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.addAllowedOrigin("*");
        corsConfiguration.setAllowCredentials(true);
        corsConfiguration.addAllowedHeader("*");
        corsConfiguration.addAllowedMethod("*");

        return corsConfiguration;
    }

    @Bean
    public CorsFilter corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", buildConfig());
        return new CorsFilter(source);
    }

    @Bean
    CookieInterceptor cookieInterceptor(){
        return new CookieInterceptor();
    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
    	registry.addInterceptor(cookieInterceptor()).addPathPatterns("/cs/portfolio/**")
    	.addPathPatterns("/dic/**");
    }
  }

Json返回体（大写D变成小写，@JsonFeild 注解失效）

{
"sdqClose":"2.3",
"sdqHigh":"3.4"
}

考虑Springboot拦截器导致FastJson失效,重新配置FastJson序列化


 
    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        // 清除默认 Json 转换器
        converters.removeIf(converter -> converter instanceof MappingJackson2HttpMessageConverter);
 
        // 配置 FastJson
        FastJsonConfig config = new FastJsonConfig();
        config.setSerializerFeatures(SerializerFeature.QuoteFieldNames,
                SerializerFeature.WriteEnumUsingToString,
                SerializerFeature.WriteMapNullValue,
                SerializerFeature.WriteDateUseDateFormat,
                SerializerFeature.BrowserCompatible,
                SerializerFeature.DisableCircularReferenceDetect);
        // 解决long型JS精度丢失问题
        SerializeConfig serializeConfig = SerializeConfig.globalInstance;
        serializeConfig.put(Long.class, ToStringSerializer.instance);
        serializeConfig.put(Long.TYPE, ToStringSerializer.instance);
        config.setSerializeConfig(serializeConfig);
 
        // 添加 FastJsonHttpMessageConverter
        FastJsonHttpMessageConverter fastJsonHttpMessageConverter = new
                FastJsonHttpMessageConverter();
        fastJsonHttpMessageConverter.setFastJsonConfig(config);
        List<MediaType> fastMediaTypes = new ArrayList<>();
        fastMediaTypes.add(MediaType.APPLICATION_JSON_UTF8);
        fastJsonHttpMessageConverter.setSupportedMediaTypes(fastMediaTypes);
        converters.add(fastJsonHttpMessageConverter);
    }