rabbitmq中创建交换机以及消息队列的方式和代码_rabbitmq会根据配置类创建交换机吗

一般mq这种消息中间件都是在服务端创建而非在管理端创建

1.先导依赖

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

2.先建立一个constants的包里面存放的都是一个静态变量

package cn.itcast.hotel.constants;
 
public class MqConstants {
    //交换机
    public  final static String HOTEL_EXCHANGE="hotel.topic";
    //增改消息队列
    public  final static String HOTEL_INSERT_QUEUE="hotel.insert.queue";
    //删除消息队列
    public  final static String HOTEL_DELETE_QUEUE="hotel.delete.queue";
    //增改Routingkey
    public  final static String HOTEL_INSERT_KEY="hotel.insert";
    //删除Routingkey
    public  final static String HOTEL_DELETE_KEY="hotel.delete";
}

3.然后利用config中bean的方式来创建具体的bean

package cn.itcast.hotel.config;
 
import cn.itcast.hotel.constants.MqConstants;
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.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
 
@Configuration
public class MqConfig {
    @Bean
    public TopicExchange topicExchange(){
        return new TopicExchange(MqConstants.HOTEL_EXCHANGE,true,false);
    }
    @Bean
    public Queue insertQueue(){
        return new Queue(MqConstants.HOTEL_INSERT_QUEUE,true);
    }
    @Bean
    public Queue deleteQueue(){
        return new Queue(MqConstants.HOTEL_DELETE_QUEUE,true);
    }
    @Bean
    public Binding insertQueueBinding(){
        return BindingBuilder.bind(insertQueue()).to(topicExchange()).with(MqConstants.HOTEL_INSERT_KEY);
    }
    @Bean
    public Binding deleteQueueBinding(){
        return BindingBuilder.bind(deleteQueue()).to(topicExchange()).with(MqConstants.HOTEL_DELETE_KEY);
    }
}

4.配置yml文件

spring:
  rabbitmq:
    host: 192.168.125.131
    port: 5672
    username: itcast
    password: 123321
    virtual-host: /