springBoot集成rabbitmq 之路由模式模式(Routing)

springBoot整合rabbitmq的例子: https://blog.csdn.net/weixin_45730866/article/details/128971917，建议先看。

consumer服务

配置类

package com.lideru.consumer.routing; 
import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.DirectExchange;
import org.springframework.amqp.core.Queue;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration; 
@Configuration
public class RabbitRoutingConfig { 
    /**
     * Queue 可以有4个参数
     *      1.name          队列名
     *      2.durable       持久化消息队列 ,rabbitmq重启的时候不需要创建新的队列 默认true
     *      3.auto-delete   表示消息队列没有在使用时将被自动删除 默认是false
     *      4.exclusive     表示该消息队列是否只在当前connection生效,默认是false
     */
    @Bean
    public Queue createRoutingQueueA() {
        return new Queue("Queue_Routing_A",true);
    }
    @Bean
    public Queue createRoutingQueueB() {
        return new Queue("Queue_Routing_B",true);
    } 
    @Bean
    public DirectExchange routingExchange() {
        //配置广播路由器
        return new DirectExchange("Exchange_Routing");
    } 
    @Bean
    public Binding bingQueueAToRoutingExchange() {
        return  BindingBuilder.bind(createRoutingQueueA()).to(routingExchange()).with("info");
    } 
    @Bean
    public Binding bingQueueBToRoutingExchange() {
        return  BindingBuilder.bind(createRoutingQueueB()).to(routingExchange()).with("error");
    } 
}
           

接收者A B

import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component; 
import java.util.Date; 
@Component
@RabbitListener(queues = "Queue_Routing_B")
public class RoutingReceiverA {
    @RabbitHandler
    public void process(String message) {
        System.out.println("ReceiverA : " + message +"  "+ new Date());
    }
}
           

import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component; 
import java.util.Date; 
@Component
@RabbitListener(queues ="Queue_Routing_A")
public class RoutingReceiverB {
    @RabbitHandler
    public void process(String message) {
        System.out.println("ReceiverB : " + message +"   "+ new Date());
    }
}
           

pruducer服务

@Component
public class RoutingSender {

    @Autowired
    private RabbitTemplate rabbitTemplate;

    public void send(int i) {
        String contentA = "路由 A=" + i + "," + new Date();
        String contentB = "路由 B=" + (i + 1) + "," + new Date();
        //消息发送，使用void convertAndSend(String exchange, String routingKey, Object message) throws AmqpException;
        //但不指定routingKey。因为FanoutExchange类型的交换机，routingKey不起作用，它向所有的队列发送广播，只要队列绑定到该交换机即接受消息。
        this.rabbitTemplate.convertAndSend("Exchange_Routing", "info", contentA);
        System.out.println("发送成功," + new Date() + "," + contentA);
        this.rabbitTemplate.convertAndSend("Exchange_Routing", "error", contentB);
        System.out.println("发送成功," + new Date() + "," + contentB);
    }
}
           

测试

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class RoutingTestsController  {
    @Autowired
    private RoutingSender routingSender; 
    @GetMapping("/routingTest")
    public void routingTest() {
        int i = 5201314;
        routingSender.send(i);
    }
}
           

调用http://127.0.0.1:8080/routingTest，producer 和 consumer服务控制台打印

发送成功,Mon Feb 13 11:18:02 CST 2023,路由 A=5201314,Mon Feb 13 11:18:02 CST 2023
发送成功,Mon Feb 13 11:18:02 CST 2023,路由 B=5201315,Mon Feb 13 11:18:02 CST 2023
           

ReceiverB : 路由 A=5201314,Mon Feb 13 11:18:02 CST 2023   Mon Feb 13 11:18:02 CST 2023
ReceiverA : 路由 B=5201315,Mon Feb 13 11:18:02 CST 2023  Mon Feb 13 11:18:02 CST 2023
           

由此可见producer 共计生产了 2 个消息，分别被消费者 A 和 B 各消费了 1 条。