RocketMQ下载、安装、以及结合Springboot的使用

业务应用场景

消息队列的应用场景：主要用于处理高并发作削峰处理、业务解耦等，比如说 大规模的短信推送、订单抓取、库存同步、消息同步等。

 

下载

wget https://archive.apache.org/dist/rocketmq/4.5.1/rocketmq-all-4.5.1-bin-release.zip

安装

unzip rocketmq-all-4.5.1-bin-release.zip

启动

cd rocketmq-all-4.5.1-bin-release/bin

启动nameServer、并验证

nohup sh mqnamesrv &

tail -f ~/logs/rocketmqlogs/namesrv.log

# 如果成功启动，能看到类似如下的日志：
2019-07-18 17:03:56 INFO main - The Name Server boot success. ...

启动Broker 并验证 （如果启动失败，调整内存参数）

nohup sh mqbroker -n localhost:9876 autoCreateTopicEnable=true &

tail -f ~/logs/rocketmqlogs/broker.log

# 如果启动成功，能看到类似如下的日志：
2019-07-18 17:08:41 INFO main - The broker[itmuchcomdeMacBook-Pro.local, 192.168.43.197:10911] boot success. serializeType=JSON and name server is localhost:9876

关闭MQ

sh mqshutdown namesrv

注意

如果一直报错 172.17.0.11:10911 连接失败，需要新增ip配置文件并指定

brokerIP1=xxx

nohup sh mqbroker -n 172.17.0.11:9876 autoCreateTopicEnable=true -c conf/broker.conf &

实战

pom依赖

        <dependency>
            <groupId>org.apache.rocketmq</groupId>
            <artifactId>rocketmq-spring-boot-starter</artifactId>
            <version>2.1.1</version>
        </dependency>

　　

发送消息

    @Resource
    private RocketMQTemplate rocketMQTemplate;

    @Value("${pet.topic.order}")
    private String orderTopic;

    @Scheduled(cron = "0 0 0 1/1 * ? ")
    public void send() {
        rocketMQTemplate.syncSendOrderly(orderTopic, "这是一条MQ消息", UUID.randomUUID().toString());
        log.info("MQ发送消息成功");
    }

　　

 

接收消息

package agatha.pet.mq;

import lombok.extern.slf4j.Slf4j;
import org.apache.rocketmq.spring.annotation.RocketMQMessageListener;
import org.apache.rocketmq.spring.core.RocketMQListener;
import org.springframework.stereotype.Component;

/**
 * @author oak
 * @date 2021/1/11
 */
@Slf4j
@Component
@RocketMQMessageListener(consumerGroup = "pet_group", topic = "${pet.topic.order}")
public class OrderConsumer implements RocketMQListener<String> {

    @Override
    public void onMessage(String msg) {
        log.info("MQ.order.msg:{}", msg);
    }

}