SpringBoot3整合RabbitMQ之二_简单队列模型案例

1. 简单队列模型

简单队列模型就是点对点发布消息，有三个角色

P(Publisher): 消息发布者

Queue: 存储消息的队列

C(Consumer): 消息消费者

1. 消息发布者

1. 创建简单队列的配置类

package com.happy.msg.config;

import org.springframework.amqp.core.Queue;
import org.springframework.amqp.core.QueueBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * <p>
 *
 * @Description: 简单消息队列创建配置类 <br>
 * </p>
 * @Datetime: 2024/3/27 18:18
 * @Author: Yuan · JinSheng <br>
 * @Since 2024/3/27 18:18
 */
@Configuration
public class SimpleQueueConfig {
    @Bean
    Queue simpleQueue() {
        return QueueBuilder.durable("simple_queue").build();
    }
}

2. 发布消费Controller

package com.happy.msg.publisher;

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
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.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

/**
 * <p>
 *
 * @Description: 生产消息的控制器 <br>
 * </p>
 * @Datetime: 2024/3/27 18:53
 * @Author: Yuan · JinSheng <br>
 * @Since 2024/3/27 18:53
 */
@RestController
@RequestMapping("/simple")
public class SimpleQueuePublisherController {

    @Autowired
    private RabbitTemplate rabbitTemplate;

    @GetMapping("/send")
    public String sentMessage() {
        rabbitTemplate.convertAndSend("simple_queue", "hello,rabbitmq");
        return "ok";
    }
}

2. 消息消费者

package com.happy.msg.consumer;

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.time.LocalDateTime;
/**
 * <p>
 * @Description: 简单队列_消息消费控制器 <br>
 * </p>
 * @Datetime: 2024/3/28 20:22
 * @Author: Yuan · JinSheng <br>
 * @Since 2024/3/28 20:22
 */
@Slf4j
@Component
public class SimpleQueueConsumer {

    /***
     * @param message 消息
     * @Description: 监听simple_queue队列中的消息，当客户端启动后，simple_queue队列中的所有的消息都被此消费者消费并打印
     * @Author: Yuan · JinSheng
     */

    @RabbitListener(queues = "simple_queue")
    public void msg(Message message){
        byte[] messageBody = message.getBody();
        String msg = new String(messageBody);
        log.info("接收到的消息==={},===接收时间==={}",msg, LocalDateTime.now());
    }
}

3. 输出结果

接收到的消息===hello,rabbitmq,===接收时间===2024-03-29T10:24:02.994453200
,msg, LocalDateTime.now());
    }
}