<!--rocketMq依賴-->
<dependency>
    <groupId>org.apache.rocketmq</groupId>
    <artifactId>rocketmq-spring-boot-starter</artifactId>
    <version>2.2.1</version>
</dependency>

配置rocketmq

# 端口
server:
port: 8083

# 配置 rocketmq
rocketmq:
name-server: 127.0.0.1:9876
#生產(chǎn)者
producer:
#生產(chǎn)者組名，規(guī)定在一個應(yīng)用里面必須唯一
group: group1
#消息發(fā)送的超時時間默認(rèn)3000ms
send-message-timeout: 3000
#消息達(dá)到4096字節(jié)的時候，消息就會被壓縮。默認(rèn) 4096
compress-message-body-threshold: 4096
#最大的消息限制，默認(rèn)為128K
max-message-size: 4194304
#同步消息發(fā)送失敗重試次數(shù)
retry-times-when-send-failed: 3
#在內(nèi)部發(fā)送失敗時是否重試其他代理，這個參數(shù)在有多個broker時才生效
retry-next-server: true
#異步消息發(fā)送失敗重試的次數(shù)
retry-times-when-send-async-failed: 3

生產(chǎn)端：新建一個 controller 來做消息發(fā)送

生產(chǎn)端按正常發(fā)送邏輯發(fā)送消息即可

package com.example.springbootrocketdemo.controller;
import org.apache.rocketmq.spring.core.RocketMQTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
 * 廣播消息
 * @author qzz
 */
@RestController
public class RocketMQBroadCOntroller {
    @Autowired
    private RocketMQTemplate rocketMQTemplate;
    /**
     * 發(fā)送廣播消息
     */
    @RequestMapping("/testBroadSend")
    public void testSyncSend(){
        //參數(shù)一：topic   如果想添加tag,可以使用"topic:tag"的寫法
        //參數(shù)二：消息內(nèi)容
        for(int i=0;i<10;i++){
            rocketMQTemplate.convertAndSend("test-topic-broad","test-message"+i);
        }
    }
}

創(chuàng)建兩個消費(fèi)者來消費(fèi)消息

我們先集群負(fù)載均衡測試，加上messageModel=MessageModel.CLUSTERING

消費(fèi)者1：

package com.example.springbootrocketdemo.config;
import org.apache.rocketmq.spring.annotation.MessageModel;
import org.apache.rocketmq.spring.annotation.RocketMQMessageListener;
import org.apache.rocketmq.spring.core.RocketMQListener;
import org.springframework.stereotype.Service;
/**
 * 廣播消息
 * 配置RocketMQ監(jiān)聽
 * MessageModel.CLUSTERING:集群模式
 * MessageModel.BROADCASTING:廣播模式
 * @author qzz
 */
@Service
@RocketMQMessageListener(consumerGroup = "test-broad",topic = "test-topic-broad",messageModel = MessageModel.CLUSTERING)
public class RocketMQBroadConsumerListener implements RocketMQListener<String> {
    @Override
    public void onMessage(String s) {
        System.out.println("集群模式 消費(fèi)者1，消費(fèi)消息："+s);
    }
}

消費(fèi)者2：與消費(fèi)者1在同一個consumerGroup 和 topic

package com.example.springbootrocketdemo.config;
import org.apache.rocketmq.spring.annotation.MessageModel;
import org.apache.rocketmq.spring.annotation.RocketMQMessageListener;
import org.apache.rocketmq.spring.core.RocketMQListener;
import org.springframework.stereotype.Service;
/**
 * 廣播消息
 * 配置RocketMQ監(jiān)聽
 * MessageModel.CLUSTERING:集群模式
 * MessageModel.BROADCASTING:廣播模式
 * @author qzz
 */
@Service
@RocketMQMessageListener(consumerGroup = "test-broad",topic = "test-topic-broad",messageModel = MessageModel.CLUSTERING)
public class RocketMQBroadConsumerListener2 implements RocketMQListener<String> {
    @Override
    public void onMessage(String s) {
        System.out.println("集群模式 消費(fèi)者2，消費(fèi)消息："+s);
    }
}

啟動服務(wù)，測試集群模式消費(fèi)

集群模式測試：兩個消費(fèi)者平攤消息

把上面兩個消費(fèi)者的 messageModel 屬性值修改成廣播模式

消費(fèi)者1：

package com.example.springbootrocketdemo.config;
import org.apache.rocketmq.spring.annotation.MessageModel;
import org.apache.rocketmq.spring.annotation.RocketMQMessageListener;
import org.apache.rocketmq.spring.core.RocketMQListener;
import org.springframework.stereotype.Service;
/**
 * 廣播消息
 * 配置RocketMQ監(jiān)聽
 * MessageModel.CLUSTERING:集群模式
 * MessageModel.BROADCASTING:廣播模式
 * @author qzz
 */
@Service
@RocketMQMessageListener(consumerGroup = "test-broad",topic = "test-topic-broad",messageModel = MessageModel.BROADCASTING)
public class RocketMQBroadConsumerListener implements RocketMQListener<String> {
    @Override
    public void onMessage(String s) {
        System.out.println("廣播消息1 廣播模式，消費(fèi)消息："+s);
    }
}

消費(fèi)者2：與消費(fèi)者1在同一個consumerGroup 和 topic

package com.example.springbootrocketdemo.config;
import org.apache.rocketmq.spring.annotation.MessageModel;
import org.apache.rocketmq.spring.annotation.RocketMQMessageListener;
import org.apache.rocketmq.spring.core.RocketMQListener;
import org.springframework.stereotype.Service;
/**
 * 廣播消息
 * 配置RocketMQ監(jiān)聽
 * MessageModel.CLUSTERING:集群模式
 * MessageModel.BROADCASTING:廣播模式
 * @author qzz
 */
@Service
@RocketMQMessageListener(consumerGroup = "test-broad",topic = "test-topic-broad",messageModel = MessageModel.BROADCASTING)
public class RocketMQBroadConsumerListener2 implements RocketMQListener<String> {
    @Override
    public void onMessage(String s) {
        System.out.println("廣播消息2 廣播模式，消費(fèi)消息："+s);
    }
}