package ch.bsgroup.scrumit.json;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.core.convert.ConversionService;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJacksonHttpMessageConverter;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter;
/**
* A custom BeanPostProcessor for Spring MVC environments that configures Jackson
* with awareness of Spring-specific format annotations such as @DateTimeFormat and @NumberFormat.
*
* This is an example of extending Spring to plug-in unique functionality not yet available
* in a released Spring distribution.
*/
@Component
public class JacksonConversionServiceConfigurer implements BeanPostProcessor {
private final ConversionService conversionService;
@Autowired
public JacksonConversionServiceConfigurer(ConversionService conversionService) {
this.conversionService = conversionService;
}
public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
return bean;
}
public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
if (bean instanceof AnnotationMethodHandlerAdapter) {
AnnotationMethodHandlerAdapter adapter = (AnnotationMethodHandlerAdapter) bean;
HttpMessageConverter<?>[] converters = adapter.getMessageConverters();
for (HttpMessageConverter<?> converter : converters) {
if (converter instanceof MappingJacksonHttpMessageConverter) {
MappingJacksonHttpMessageConverter jsonConverter = (MappingJacksonHttpMessageConverter) converter;
jsonConverter.setObjectMapper(new ConversionServiceAwareObjectMapper(this.conversionService));
}
}
}
return bean;
}
}