RabbitMqConfig.java

package com.springbootdev.examples.consumer.config;

import com.springbootdev.examples.consumer.model.Car;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.support.converter.*;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;

@Configuration
public class RabbitMqConfig {

    @Bean
    public MessageConverter messageConverter() {
        Jackson2JsonMessageConverter jsonMessageConverter = new Jackson2JsonMessageConverter();
        jsonMessageConverter.setClassMapper(classMapper());
        return jsonMessageConverter;
    }

    @Bean
    public RabbitTemplate rabbitTemplate(ConnectionFactory connectionFactory) {
        RabbitTemplate template = new RabbitTemplate(connectionFactory);
        template.setMessageConverter(messageConverter());
        return template;
    }

    @Bean
    public DefaultClassMapper classMapper() {
        DefaultClassMapper classMapper = new DefaultClassMapper();
        Map<String, Class<?>> idClassMapping = new HashMap<>();
        idClassMapping.put("com.springbootdev.examples.producer.model.Car", Car.class);
        classMapper.setIdClassMapping(idClassMapping);
        return classMapper;
    }
}