Jackson is ignoring spring.jackson.properties in my spring boot application

Question

Jackson is ignoring spring.jackson.property-naming-strategy=SNAKE_CASE. I am using springBootVersion 1.4.2.RELEASE. In my application.properties file, I have added

Answer 1

MappingJackson2HttpMessageConverter class uses the default instance created by Jackson2ObjectMapperBuilder.json() method. In order to use application conext's ObjectMapper, you can register a custom WebMvcConfigurerAdapter.

@Configuration
public class WebMvcDefaultObjectMapperConfigurerAdapter extends WebMvcConfigurerAdapter {

    private ObjectMapper mapper;

    @Autowired
    public WebMvcDefaultObjectMapperConfigurerAdapter(ObjectMapper mapper) {
        // default mapper configured with spring.*
        this.mapper = mapper;
    }

    @Override
    public void extendMessageConverters(List> converters) {
        for (HttpMessageConverter httpConverter : converters) {
            if (httpConverter instanceof MappingJackson2HttpMessageConverter) {
                // register the configured object mapper to HttpMessageconter
                ((MappingJackson2HttpMessageConverter) httpConverter).setObjectMapper(mapper);
            }
        }
    }
}