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dreamwave 做网站,网页seo,创意网站建设公司,网站开发er图rabbitMQ安装插件rabbitmq-delayed-message-exchange 交换机由此type 表示组件安装成功生产者发送消息时设置延迟值消息在交换机滞纳至指定延迟后，进入队列，被消费者消费。组件注解类： package com.esint.configs;import org.springfra…

rabbitMQ安装插件rabbitmq-delayed-message-exchange

交换机由此type 表示组件安装成功
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生产者发送消息时设置延迟值消息在交换机滞纳至指定延迟后，进入队列，被消费者消费。

组件注解类：

package com.esint.configs;import org.springframework.amqp.core.*;
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public static final String DELAYED_EXCHANGE_NAME = "delayed.exchange";//队列public static final String DELAYED_QUEUE_NAME = "delayed.queue";//routingKeypublic static final String DELAYED_ROUTING_KEY = "delayed.routingkey";/*** 基于插件声明一个自定义交换机* @return*/@Beanpublic  CustomExchange delayedExchange(){//String name, String type, boolean durable, boolean autoDelete, Map<String, Object> arguments) {Map<String, Object> arguments = new HashMap<>();arguments.put("x-delayed-type","direct");return new CustomExchange(DELAYED_EXCHANGE_NAME,"x-delayed-message",true, false,arguments);}@Beanpublic Queue delayedQueue(){return QueueBuilder.durable(DELAYED_QUEUE_NAME).build();}@Beanpublic Binding delayedQueueBindingDelayedExchange(@Qualifier("delayedQueue") Queue delayedQueue,@Qualifier("delayedExchange") CustomExchange delayedExchange){return BindingBuilder.bind(delayedQueue).to(delayedExchange).with(DELAYED_ROUTING_KEY).noargs();}
}

生产者代码实现：

package com.esint.controller;//发送延迟消息import com.esint.configs.DelayedQueueConfig;
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 SendMesController {@Autowiredprivate RabbitTemplate rabbitTemplate;@GetMapping("/sendDelayMsg/{message}/{delayTime}")public void sendMsg(@PathVariable String message,@PathVariable Integer delayTime){log.info("当前时间：{},发送一条ttl为{}ms的消息给延迟交换机转队列：{}",new Date().toString(),delayTime,message);rabbitTemplate.convertAndSend(DelayedQueueConfig.DELAYED_EXCHANGE_NAME,DelayedQueueConfig.DELAYED_ROUTING_KEY,message, mes->{mes.getMessageProperties().setDelay(delayTime);return mes;});}}

消费者实现：

package com.esint.consumer;import com.esint.configs.DelayedQueueConfig;
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;/*** 基于插件的延时消息*/
@Slf4j
@Component
public class DelayQueueConsumer {//监听消息队列@RabbitListener(queues = DelayedQueueConfig.DELAYED_QUEUE_NAME)public void receiveDelayQueue(Message message){String msg = new String(message.getBody());log.info("当前时间{} 收到延迟消息：{}",new Date().toString(),msg);}
}