Rabbit MQ實戰【fanout交換器】

spring boot版本：2.1.10.RELEASE

本文涉及兩個項目 rabbitmq-fanout-provider 和 rabbitmq-fanout-consumer，相關依賴和配置相同。

相關依賴

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

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

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

相關配置

#rabbitmq配置
spring.rabbitmq.host=106.15.120.126
spring.rabbitmq.port=5672
spring.rabbitmq.username=admin
spring.rabbitmq.password=admin
spring.rabbitmq.virtual-host=/

#設置交換器(以下4個變量均爲自定義變量)
mq.config.exchange=order.fanout

mq.config.queue.sms=order.sms
mq.config.queue.push=order.push
mq.config.queue.red=order.red

rabbitmq-fanout-provider項目

（1）消息發送者

package com.ebook.rabbitmq;

import org.springframework.amqp.core.AmqpTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import java.util.Date;

/**
 * @author:JZ
 * @date:2020/2/2
 */

@Component
public class Sender {

    @Value("${mq.config.exchange}")
    private String exchange;

    @Autowired
    private AmqpTemplate rabbitTemplate;

    public void send() {
        String msg = "hello：" + new Date();
        //廣播路由鍵爲空
        this.rabbitTemplate.convertAndSend(this.exchange, "", msg);
    }

}

（2）測試類

import com.ebook.rabbitmq.RabbitmqFanoutProvider;
import com.ebook.rabbitmq.Sender;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest(classes = RabbitmqFanoutProvider.class)
public class RabbitMqFanoutApplicationTests {

	@Autowired
	private Sender sender;
	
	@Test
	public void send() throws InterruptedException {
		this.sender.send();
	}

}

rabbitmq-fanout-provider項目

（1）短信消息接收者

  fanout交換器是廣播發送，所以不需要指定路由鍵。

  其他兩個消息接收者只需將 mq.config.queue.sms 替換爲配置文件中的其他消息隊列即可。

package com.ebook.rabbitmq;

import org.springframework.amqp.core.ExchangeTypes;
import org.springframework.amqp.rabbit.annotation.*;
import org.springframework.stereotype.Component;

/**
 * @author:JZ
 * @date:2020/2/2
 */

@Component
@RabbitListener(bindings = @QueueBinding(
        value = @Queue(value = "${mq.config.queue.sms}", autoDelete = "true"),//autoDelete表示隊列爲臨時隊列
        exchange = @Exchange(value = "${mq.config.exchange}", type = ExchangeTypes.FANOUT)
    ))
public class SmsReciver {

    @RabbitHandler
    public void process(String msg) {
        System.out.println("短信處理：" + msg);
    }

}