rabbitmq配置

package me.aizou.tour.guide.config;

import lombok.extern.slf4j.Slf4j;
import me.aizou.tour.guide.domain.event.AnnounceEventMessage;
import org.springframework.amqp.core.*;
import org.springframework.amqp.rabbit.annotation.EnableRabbit;
import org.springframework.amqp.rabbit.config.SimpleRabbitListenerContainerFactory;
import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.support.converter.ClassMapper;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.Arrays;
import java.util.List;

/**
 * Created by Michael on 2017/5/19.
 */
@EnableRabbit
@Configuration
@Slf4j
public class AmqpConfig {

    private final static String QUEUE = "tour-guide-api.announce";
    private final static String EXCHANGE = "zouzou.public";

    @Value("${spring.rabbitmq.host}")
    private String host;

    @Value("${spring.rabbitmq.username}")
    private String username;

    @Value("${spring.rabbitmq.password}")
    private String password;

    @Bean
 public Queue queue() {
        return new Queue(QUEUE, true);
    }

    @Bean
 public TopicExchange exchange() {
        return new TopicExchange(EXCHANGE);
    }

// @Bean
// public Binding binding(Queue queue, TopicExchange exchange) {
// return BindingBuilder
// .bind(queue)
// .to(exchange)
// .with("announce.guide");
// }

 @Bean
 List<Binding> bindings() {

        return Arrays.asList(
                BindingBuilder.bind(queue()).to(exchange()).with("announce"),
                BindingBuilder.bind(queue()).to(exchange()).with("announce.guide"));
    }

    @Bean
 public RabbitTemplate rabbitTemplate() {
        //没有指定默认queueName,在接收的监听器指定
 RabbitTemplate template = new RabbitTemplate(connectionFactory());
        template.setMessageConverter(new Jackson2JsonMessageConverter());
        return template;
    }

    @Bean("rabbitListenerContainerFactory")
    public SimpleRabbitListenerContainerFactory rabbitListenerContainerFactory() {
        SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory();
        factory.setConnectionFactory(connectionFactory());
        factory.setMessageConverter(customConverter());
        return factory;
    }

    @Bean
 public Jackson2JsonMessageConverter customConverter() {
        Jackson2JsonMessageConverter converter = new Jackson2JsonMessageConverter();
        ClassMapper classMapper = new ClassMapper() {

            @Override
 public Class<?> toClass(MessageProperties properties) {

                if(properties.getConsumerQueue().equals("tour-guide-api.announce")) {
                    return AnnounceEventMessage.class;
                }
                throw new RuntimeException(properties.getConsumerQueue()+"不支持");
            }

            @Override
 public void fromClass(Class<?> clazz, MessageProperties properties) {
                throw new UnsupportedOperationException("this mapper is only for inbound, do not use for send message");
            }
        };
        converter.setClassMapper(classMapper);
        return converter;
    }

    @Bean
 public ConnectionFactory connectionFactory() {
        CachingConnectionFactory connectionFactory = new CachingConnectionFactory(host);
        connectionFactory.setUsername(username);
        connectionFactory.setPassword(password);
        return connectionFactory;
    }
}