Possible incompatibility with Spring Boot #1140
Description
I've yet to test this with a clean version of Spring Boot but my guess is that this issue happens there also.
Spring Boot in HttpMessageConverters first adds the Spring Boot configured MappingJackson2HttpMessageConverter and then it adds the default MappingJackson2HttpMessageConverter from Spring MVC.
This causes the ObjectMapperConfigured event to fire twice, first for the configured converter (which is actually used) and then for the default converter. So when you f.e. set a custom property naming strategy then in ObjectMapperBeanPropertyNamingStrategythis is overwritten by the second event.
I've added the following code to my project to fix this:
@Configuration
public class MyWebAutoConfiguration extends WebMvcConfigurerAdapter {
@Override
public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
ObjectMapper objectMapper = null;
for (HttpMessageConverter converter : converters) {
if (converter instanceof MappingJackson2HttpMessageConverter) {
MappingJackson2HttpMessageConverter jacksonConverter =
((MappingJackson2HttpMessageConverter) converter);
if (objectMapper == null) {
objectMapper = jacksonConverter.getObjectMapper();
} else {
jacksonConverter.setObjectMapper(objectMapper);
}
}
}
}
}