引入包

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-amqp</artifactId>
        </dependency>

配置檔案 application.properties

spring.rabbitmq.port=5672
spring.rabbitmq.virtualHost=/
spring.rabbitmq.host=192.168
 
.74.164
spring.rabbitmq.username=guest
spring.rabbitmq.password=guest

配置類

import java.io.IOException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import org.springframework.amqp.AmqpException;
import org.springframework.amqp.core.AcknowledgeMode;
import org.springframework
 
.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.Queue;
import org.springframework.amqp.core.TopicExchange;
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.listener.SimpleMessageListenerContainer;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.amqp.SimpleRabbitListenerContainerFactoryConfigurer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Scope;


@Configuration
public class RabbitMqConfig {

    public static final String GET_TICKET = "test";

    @Bean
    public Queue getTicket() {
        return new Queue(GET_TICKET, true); // 佇列持久
    }

    @Bean
    public TopicExchange topicExchange(){
        return new TopicExchange("ticket_default_exchange");
    }

    @Bean
    Binding bindingExchangeMessage(Queue getTicket, TopicExchange topicExchange) {
        return BindingBuilder.bind(getTicket).to(topicExchange).with("#");
    }

    /**
     * Rabbit監聽容器工廠
     * @param configurer
     * @param connectionFactory
     * @return
     */
    @Bean("ticketRabbitmqContainerFactory")
    public SimpleRabbitListenerContainerFactory rabbitmqContainerFactory(
            SimpleRabbitListenerContainerFactoryConfigurer configurer, ConnectionFactory connectionFactory) {
        SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory();
        factory.setPrefetchCount(1);//一次去幾個訊息
        factory.setConcurrentConsumers(1);//幾個消費者
        // 執行緒的執行緒池
        ExecutorService executorService = Executors.newFixedThreadPool(1);//消費者執行緒池（只能大於等於消費者，最好等於）
        factory.setTaskExecutor(executorService);
        configurer.configure(factory, connectionFactory);
        return factory;
    }


}

消費者

import org.springframework.amqp.core.Message;
import org.springframework.amqp.core.MessageListener;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;


import com.hhly.ticket.service.ticket.rabbitmq.RabbitMqConfig;

@Component
public class TicketListenter implements MessageListener {

    @RabbitListener(queues=RabbitMqConfig.GET_TICKET, containerFactory="rabbitmqContainerFactory")
    public void onMessage(Message message) {
        String result  = new String(message.getBody(), "UTF-8");
    }

}