gistfile1.java

import java.util.Set;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.core.convert.ConversionService;
import org.springframework.core.convert.converter.Converter;
import org.springframework.core.convert.support.GenericConversionService;
import org.springframework.stereotype.Component;

@Component
public class CustomConvertersRegistrationBean implements ApplicationListener<ContextRefreshedEvent>, ApplicationContextAware {
	
	private @Autowired Set<Converter<?, ?>> converters;

	private @Autowired ConversionService conversionService;
	
	private ApplicationContext rootApplicationContext;

	@Override
	public void onApplicationEvent(ContextRefreshedEvent event) {
		// Run registration only once - on root context refresh
		if (!rootApplicationContext.equals(event.getApplicationContext()))
			return;
		
		GenericConversionService gcs = (GenericConversionService) conversionService;
		for (Converter<?, ?> converter : converters) {
			gcs.addConverter(converter);
		}
	}

	@Override
	public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
		this.rootApplicationContext = applicationContext;
	}
}