rabbit的扇出模式（fanout发布订阅）的生产者与消费者使用案例

扇出模式 fanout 发布订阅模式

生产者

生产者发送消息到交换机（logs）,控制台输入消息作为生产者的消息发送

package com.esint.rabbitmq.work03;

import com.esint.rabbitmq.RabbitMQUtils;
import com.rabbitmq.client.Channel;

import java.util.Scanner;

public class EmitLog {


    public static final String EXCHANGE_NAME = "logs";

    public static void main(String[] args) throws Exception {

        Channel channel = RabbitMQUtils.getChannel();

        //声明交换机
        channel.exchangeDeclare(EXCHANGE_NAME,"fanout");

        Scanner scanner = new Scanner(System.in);

        while(scanner.hasNext()){
            String mes = scanner.next();
            channel.basicPublish(EXCHANGE_NAME,"",null,mes.getBytes("UTF-8"));
            System.out.println("生产者发出消息："+mes.toString());
        }
    }
}

交换机如下：
在这里插入图片描述
发布者如下：

消费者

创建两个消费来同时消费生产者的发布消息。声明两个临时队列，与交换机做绑定，消费消息

消费者01

package com.esint.rabbitmq.work03;


import com.esint.rabbitmq.RabbitMQUtils;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.DeliverCallback;

/**
 * 消费者01的消息接受
 */
public class ReceiveLog01 {

    public static final String EXCHANGE_NAME = "logs";

    public static void main(String[] args) throws Exception {

        //获取信道
        Channel channel = RabbitMQUtils.getChannel();
        //声明一个交换机
        channel.exchangeDeclare(EXCHANGE_NAME,"fanout");

        /**
         *声明一个队列  队列名字随机
         * 消费者断开与队列的链接后 队列自动删除
         */
        String queue = channel.queueDeclare().getQueue();

        /**
         * 绑定交换机与队列
         * 1.队列名字
         */
        channel.queueBind(queue,EXCHANGE_NAME,"");
        System.out.println("wait print message...");

        DeliverCallback deliverCallback = (var,var2)->{
            System.out.println("01:"+new String(var2.getBody()));
        };
        channel.basicConsume(queue,true,deliverCallback, var->{});

    }
}

消费者02

package com.esint.rabbitmq.work03;


import com.esint.rabbitmq.RabbitMQUtils;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.DeliverCallback;

/**
 * 消费者02的消息接受
 */
public class ReceiveLog02 {

    public static final String EXCHANGE_NAME = "logs";

    public static void main(String[] args) throws Exception {

        //获取信道
        Channel channel = RabbitMQUtils.getChannel();
        //声明一个交换机
        channel.exchangeDeclare(EXCHANGE_NAME,"fanout");

        /**
         *声明一个队列  队列名字随机
         * 消费者断开与队列的链接后 队列自动删除
         */
        String queue = channel.queueDeclare().getQueue();

        /**
         * 绑定交换机与队列
         * 1.队列名字
         */
        channel.queueBind(queue,EXCHANGE_NAME,"");
        System.out.println("wait print message...");

        DeliverCallback deliverCallback = (var,var2)->{
            System.out.println("02:"+new String(var2.getBody(),"UTF-8"));
        };
        channel.basicConsume(queue,true,deliverCallback, var->{});

    }
}