RabbitMQ延迟消息基于插件x-delayed-message

地址：https://github.com/rabbitmq/rabbitmq-delayed-message-exchange/tags

下载的插件放到rabbitmq安装目录的plugins里面，重启rabbitmq就可以了。

import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.CustomExchange;
import org.springframework.amqp.core.Queue;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;

@Configuration
public class DelayedQueueConfig {
    //交换机
    private  static final  String  DELAYED_EXCHANGE = "delayed_exchange";
    //队列
    private static  final  String  DELAYED_QUEUE="delayed_queue";
    //routinKey
    private static  final  String ROUTINKEY="routinkey";


    
    @Bean("delayedExchange")
    CustomExchange delayedExchange(){
        Map map = new HashMap<>();
        map.put("x-delayed-type","direct");
        
        return new CustomExchange(DELAYED_EXCHANGE,"x-delayed-message",true,false,map);
    }

    
    @Bean("delayedQueue")
    Queue delayedQueue(){
        return new Queue(DELAYED_QUEUE);
    }

    
    @Bean
    Binding queueBindingExcehang(@Qualifier("delayedExchange") CustomExchange delayedExchange,@Qualifier("delayedQueue")  Queue delayedQueue){
        return BindingBuilder.bind(delayedQueue).to(delayedExchange).with(ROUTINKEY).noargs();
    }
}

import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.Date;

@Slf4j
@RestController
@RequestMapping("/ttl")
public class sendMessgeController {

    @Autowired
    private RabbitTemplate rabbitTemplate;

    @GetMapping("/sendMsg3/{msg}/{now}")
    public void sendMesg3(@PathVariable String msg,@PathVariable int now){
        Date date = new Date();
        log.info("当前时间：{}，发送一条消息给两个ttl队列：{}",date ,msg);
        rabbitTemplate.convertAndSend("delayed_exchange","routinkey",msg,ms->{
            ms.getMessageProperties().setDelay(now);
            return ms;
        });
    }
}

import com.rabbitmq.client.Channel;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;

import java.util.Date;

@Slf4j
@Component
public class QueueConsumer {
    
    @RabbitListener(queues = "delayed_queue")
    void receiveDelayed(Message msg){
        String str = new String(msg.getBody());
        log.info("收到延迟队列消息，当前时间{}，消息为{}", new Date(),str);
    }
}

请求两次看看最终效果
http://127.0.0.1:8080/ttl/sendMsg3/one/20000 20秒
http://127.0.0.1:8080/ttl/sendMsg3/two/2000 2秒