@Bean
public HttpMessageConverters fadtJsonHttpMessageConverters(){
    FastJsonHttpMessageConverter fastJsonHttpMessageConverter = new FastJsonHttpMessageConverter();
    FastJsonConfig fastJsonConfig = new FastJsonConfig();
    fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
    fastJsonHttpMessageConverter.setFastJsonConfig(fastJsonConfig);
    HttpMessageConverter<?> converter = fastJsonHttpMessageConverter;
    return new HttpMessageConverters(converter);
}