（java）简单实现原生RabbitMQ中的广播订阅（fanout）模式

最新推荐文章于 2025-08-06 09:05:31 发布

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最新推荐文章于 2025-08-06 09:05:31 发布

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分类专栏： RabbitMQ 文章标签： java RabbitMQ 原生 fanout

本文链接：https://blog.youkuaiyun.com/WGR0205/article/details/78059239

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3 篇文章

订阅专栏

本文介绍如何使用Java原生API实现RabbitMQ的广播(fanout)模式，讲解发送端的配置与操作。

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fanout 发送端

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;

public class MyFanoutSender {
	
   
    private static final String MESSAGE = "my name is";
    
    public static void main(String[] args){
    	Connection conn = null;
    	Channel channel = null;
    	try {
    		//初始化连接，主机，端口，用户名，密码可以自己定义
			ConnectionFactory factory = new ConnectionFactory();
			factory.setHost(HOST_PARAMETER.LOCAL_HOST);
			factory.setPort(HOST_PARAMETER.LOCAL_PORT);
			factory.setUsername(HOST_PARAMETER.LOCAL_USER_NAME);
			factory.setPassword(HOST_PARAMETER.LOCAL_PASSWORD);
			//创建连接
			conn = factory.newConnection();
			//创建通道
			channel = conn.createChannel();
			//定义为fanout类型的交换机
			channel.exchangeDeclare(HOST_PARAMETER.EXCHANGE_NAME, "fanout");
			//发送，指定routingkey为""
			channel.basicPublish(HOST_PARAMETER.EXCHANGE_NAME, "", null, MESSAGE.getBytes());
			System.out.println("I send a fanout massage!");
		} catch (Exception e) {
			e.printStackTrace();
		} finally{
			try {
				if(channel != null){
					channel.close();
				}
				if(conn != null){
					conn.close();
				}
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
    }
}

fanout订阅者（接收端），可以自己多定义几个，才能看出效果

import java.io.IOException;

import com.rabbitmq.client.AMQP.BasicProperties;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import com.rabbitmq.client.Consumer;
import com.rabbitmq.client.DefaultConsumer;
import com.rabbitmq.client.Envelope;

public class MyFirstFanoutReceiver {
	
  public static void main(String[] args){
	  Connection conn = null;
  	  Channel channel = null;
  	  try {
  		//初始化连接
		ConnectionFactory factory = new ConnectionFactory();
		factory.setHost(HOST_PARAMETER.LOCAL_HOST);
		factory.setPort(HOST_PARAMETER.LOCAL_PORT);
		factory.setUsername(HOST_PARAMETER.LOCAL_USER_NAME);
		factory.setPassword(HOST_PARAMETER.LOCAL_PASSWORD);
		//创建连接
		conn = factory.newConnection();
		//创建通道
		channel = conn.createChannel();
		//声明交换机类型
		channel.exchangeDeclare(HOST_PARAMETER.EXCHANGE_NAME, "fanout");
		//声明默认的队列
		String queue = channel.queueDeclare().getQueue();
		//将队列与交换机绑定，最后一个参数为routingKey,与发送者指定的一样""
		channel.queueBind(queue, HOST_PARAMETER.EXCHANGE_NAME, "");
		//消费者
	    Consumer consumer = new DefaultConsumer(channel){
			@Override
			public void handleDelivery(String consumerTag, Envelope envelope, BasicProperties properties, byte[] body)
					throws IOException {
				System.out.println(new String(body,"utf-8")+" Tom");
			}
	    	
	    };
	    channel.basicConsume(queue, true, consumer);
	    System.out.println("i am the first fanout receiver!");
      }catch (Exception e) {
			e.printStackTrace();
	  } 
  }
}