标签：RocketMq5.Dashboard；

一、简介

RocketMQ因其架构简单、业务功能丰富、具备极强可扩展性等特点被广泛应用，比如金融业务、互联网、大数据、物联网等领域的业务场景；

二、环境部署

1、编译打包

1、下载5.0版本源码包
rocketmq-all-5.0.0-source-release.zip

2、解压后进入目录，编译打包
mvn -Prelease-all -DskipTests -Dspotbugs.skip=true clean install -U

2、修改配置

在distribution/target/rocketmq-5.0.0/rocketmq-5.0.0/bin/runserver.sh

distribution/target/rocketmq-5.0.0/rocketmq-5.0.0/bin/runbroker.sh

3、服务启动

1、该目录下
distribution/target/rocketmq-5.0.0/rocketmq-5.0.0/bin/

2、启动NameServer
sh mqnamesrv

输出日志
The Name Server boot success. serializeType=JSON

3、启动Broker+Proxy
sh mqbroker -n localhost:9876 --enable-proxy

输出日志
rocketmq-proxy startup successfully

4、关闭服务
sh mqshutdown namesrv
Send shutdown request to mqnamesrv(18636) OK

sh mqshutdown broker
Send shutdown request to mqbroker with proxy enable OK(18647)

4、控制台安装

1、下载master源码包
rocketmq-dashboard-master

2、解压后进入目录，编译打包
mvn clean package -Dmaven.test.skip=true

3、启动服务
java -jar target/rocketmq-dashboard-1.0.1-SNAPSHOT.jar

4、输出日志
INFO main - Tomcat started on port(s): 8080 (http) with context path ''

5、访问服务：localhost:8080

三、工程搭建

1、工程结构

2、依赖管理

在rocketmq-starter组件中，实际上依赖的是rocketmq-client组件的5.0版本，由于两个新版框架间的兼容问题，需要添加相关配置解决该问题；

<dependency>
    <groupId>org.apache.rocketmq</groupId>
    <artifactId>rocketmq-spring-boot-starter</artifactId>
    <version>${rocketmq-starter.version}</version>
</dependency>

3、配置文件

配置RocketMq服务地址，消息生产者和消费者；

rocketmq:
  name-server: 127.0.0.1:9876
  # 生产者
  producer:
    group: boot_group_1
    # 消息发送超时时间
    send-message-timeout: 3000
    # 消息最大长度4M
    max-message-size: 4096
    # 消息发送失败重试次数
    retry-times-when-send-failed: 3
    # 异步消息发送失败重试次数
    retry-times-when-send-async-failed: 2
  # 消费者
  consumer:
    group: boot_group_1
    # 每次提取的最大消息数
    pull-batch-size: 5

4、配置类

在配置类中主要定义两个Bean的加载，即RocketMQTemplate和DefaultMQProducer，主要是提供消息发送的能力，即生产消息；

@Configuration
public class RocketMqConfig {
   
   

    @Value("${rocketmq.name-server}")
    private String nameServer;

    @Value("${rocketmq.producer.group}")
    private String producerGroup;

    @Value("${rocketmq.producer.send-message-timeout}")
    private Integer sendMsgTimeout;

    @Value("${rocketmq.producer.max-message-size}")
    private Integer maxMessageSize;

    @Value("${rocketmq.producer.retry-times-when-send-failed}")
    private Integer retryTimesWhenSendFailed ;

    @Value("${rocketmq.producer.retry-times-when-send-async-failed}")
    private Integer retryTimesWhenSendAsyncFailed ;

    @Bean
    public RocketMQTemplate rocketMqTemplate(){
   
   
        RocketMQTemplate rocketMqTemplate = new RocketMQTemplate();
        rocketMqTemplate.setProducer(defaultMqProducer());
        return rocketMqTemplate;
    }

    @Bean
    public DefaultMQProducer defaultMqProducer() {
   
   
        DefaultMQProducer producer = new DefaultMQProducer();
        producer.setNamesrvAddr(this.nameServer);
        producer.setProducerGroup(this.producerGroup);
        producer.setSendMsgTimeout(this.sendMsgTimeout);
        producer.setMaxMessageSize(this.maxMessageSize);
        producer.setRetryTimesWhenSendFailed(this.retryTimesWhenSendFailed);
        producer.setRetryTimesWhenSendAsyncFailed(this.retryTimesWhenSendAsyncFailed);
        return producer;
    }
}

四、基础用法

1、消息生产

编写一个生产者接口类，分别使用RocketMQTemplate和DefaultMQProducer实现消息发送的功能，然后可以通过Dashboard控制面板查看消息详情；

@RestController
public class ProducerWeb {
   
   
    private static final Logger log = LoggerFactory.getLogger(ProducerWeb.class);

    @Autowired
    private RocketMQTemplate rocketMqTemplate;

    @GetMapping("/send/msg1")
    public String sendMsg1 (){
   
   
        try {
   
   
            // 构建消息主体
            JsonMapper jsonMapper = new JsonMapper();
            String msgBody = jsonMapper.writeValueAsString(new MqMsg(1,"boot_mq_msg"));
            // 发送消息
            rocketMqTemplate.convertAndSend("boot-mq-topic",msgBody);
        } catch (Exception e) {
   
   
            e.printStackTrace();
        }
        return "OK" ;
    }

    @Autowired
    private DefaultMQProducer defaultMqProducer ;

    @GetMapping("/send/msg2")
    public String sendMsg2 (){
   
   
        try {
   
   
            // 构建消息主体
            JsonMapper jsonMapper = new JsonMapper();
            String msgBody = jsonMapper.writeValueAsString(new MqMsg(2,"boot_mq_msg"));
            // 构建消息对象
            Message message = new Message();
            message.setTopic("boot-mq-topic");
            message.setTags("boot-mq-tag");
            message.setKeys("boot-mq-key");
            message.setBody(msgBody.getBytes());
            // 发送消息，打印日志
            SendResult sendResult = defaultMqProducer.send(message);
            log.info("msgId:{},sendStatus:{}",sendResult.getMsgId(),sendResult.getSendStatus());
        } catch (Exception e) {
   
   
            e.printStackTrace();
        }
        return "OK" ;
    }
}

2、消息消费

编写消息监听类，实现RocketMQListener接口，通过RocketMQMessageListener注解控制监听的具体信息；

@Service
@RocketMQMessageListener(consumerGroup = "boot_group_1",topic = "boot-mq-topic")
public class ConsumerListener implements RocketMQListener<String> {
   
   

    private static final Logger log = LoggerFactory.getLogger(ConsumerListener.class);

    @Override
    public void onMessage(String message) {
   
   
        log.info("\n=====\n message：{} \n=====\n",message);
    }
}

五、参考源码

文档仓库：
https://gitee.com/cicadasmile/butte-java-note

源码仓库：
https://gitee.com/cicadasmile/butte-spring-parent