【综合学习】springboot项目使用rabbitmq (简单粗暴) 2020年1月19日

1.项目依赖

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

2. 配置文件

#后面三个参数主要是用于“并发量的配置”，表示：并发消费者的初始化值，并发消费者的最大值，每个消费者每次监听时可拉取处理的消息数量。
spring.rabbitmq.host=192.168.101.103
spring.rabbitmq.port=5672
spring.rabbitmq.username=admin
spring.rabbitmq.password=123456
spring.rabbitmq.listener.concurrency=10
spring.rabbitmq.listener.max-concurrency=20
spring.rabbitmq.listener.prefetch=5

3. 注解，新建channel

DirectConfig.java

package starter.rabbitmq;

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

/**
 * @author zs
 */
@Configuration
public class DirectConfig {

    @Bean
    public Queue notifyTestQueue() {
        return new Queue("notify.test");
    }
}

4. 生产者

NotifyTestSender.java

package starter.rabbitmq;

import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.core.AmqpTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

/**
 * 添加一个消息发送类（生产者）
 * @author zs
 */
@Slf4j
@Component
public class NotifyTestSender{

    @Autowired
    private AmqpTemplate rabbitTemplate;

    public void sender(String msg){

        log.info("notify.payment send message: "+msg);

        rabbitTemplate.convertAndSend("notify.test", msg);
    }
}

5.消费者

NotifyTestReceive.java

package starter.rabbitmq;

import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;

/**
 * @author zs
 */
@Slf4j
@Component
@RabbitListener(queues = "notify.test")
public class NotifyTestReceive{

    @RabbitHandler
    public void receive(String msg) {

        log.info("notify.test receive message: "+msg);

    }
}

6.随便搞个控制器测试下

RabbitImpl.java

package starter.api.impl;

import api.dto.MqSendDTO;
import api.interfaces.IRabbit;
import com.alibaba.fastjson.JSONObject;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import starter.rabbitmq.PaymentNotifySender;


/**
 * @author zs
 */
@Api(value = "/rabbit",tags = "rabbit控制器")
@RestController
public class RabbitImpl implements IRabbit {

    @Autowired
    private NotifyTestSendersender;


    @ApiOperation(value = "sendMqTest")
    @GetMapping("/sendMqTest")
    @Override
    public String sendMqTest(MqSendDTO mqSendDTO) {

        sender.sender("test send：" + JSONObject.toJSONString(mqSendDTO));

        return "";
    }
}

7.上个成功的图。

经测试发现，如果注释掉消费者部分，即消息不会被消费掉，则rabbitmq的web页面可以看到消息内容。