Spring 整合 RocketMQ

1. 引入jar包

        <!-- RocketMQ -->        <dependency>               <groupId>com.alibaba.rocketmq</groupId>               <artifactId>rocketmq-all</artifactId>               <version>3.2.6</version>               <type>pom</type>          </dependency>        <dependency>               <groupId>com.alibaba.rocketmq</groupId>               <artifactId>rocketmq-client</artifactId>               <version>3.2.6</version>          </dependency>    

2.Spring bean 配置单例

　　<bean id="myProducer" class="cn.zno.rocketmq.MyProducer"            init-method="init"              destroy-method="destroy"            scope="singleton">　　　　　　<property name="producerGroup" value="MyProducerGroup" />　　　　　　<property name="namesrvAddr" value="127.0.0.1:9876" />    </bean>    <bean class="cn.zno.rocketmq.MyConsumer"             init-method="init"             destroy-method="destroy"            scope="singleton">　　　　　　<property name="consumerGroup" value="MyConsumerGroup" />　　　　　　<property name="namesrvAddr" value="127.0.0.1:9876" />    </bean> 

 

3. 自定义producer

package cn.zno.rocketmq;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import com.alibaba.rocketmq.client.exception.MQClientException;import com.alibaba.rocketmq.client.producer.DefaultMQProducer;public class MyProducer {    private final Logger logger = LoggerFactory.getLogger(MyProducer.class);    private DefaultMQProducer defaultMQProducer;    private String producerGroup;    private String namesrvAddr;    /**     * Spring bean init-method     */    public void init() throws MQClientException {        // 参数信息        logger.info("DefaultMQProducer initialize!");        logger.info(producerGroup);        logger.info(namesrvAddr);        // 初始化        defaultMQProducer = new DefaultMQProducer(producerGroup);        defaultMQProducer.setNamesrvAddr(namesrvAddr);        defaultMQProducer.setInstanceName(String.valueOf(System.currentTimeMillis()));                defaultMQProducer.start();　　　　 logger.info("DefaultMQProudcer start success!");    }    /**     * Spring bean destroy-method     */    public void destroy() {        defaultMQProducer.shutdown();    }    public DefaultMQProducer getDefaultMQProducer() {        return defaultMQProducer;    }    // ---------------setter -----------------    public void setProducerGroup(String producerGroup) {        this.producerGroup = producerGroup;    }    public void setNamesrvAddr(String namesrvAddr) {        this.namesrvAddr = namesrvAddr;    }}

4. 自定义consumer

package cn.zno.rocketmq;import java.util.List;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import com.alibaba.rocketmq.client.consumer.DefaultMQPushConsumer;import com.alibaba.rocketmq.client.consumer.listener.ConsumeConcurrentlyContext;import com.alibaba.rocketmq.client.consumer.listener.ConsumeConcurrentlyStatus;import com.alibaba.rocketmq.client.consumer.listener.MessageListenerConcurrently;import com.alibaba.rocketmq.client.exception.MQClientException;import com.alibaba.rocketmq.common.consumer.ConsumeFromWhere;import com.alibaba.rocketmq.common.message.MessageExt;import com.alibaba.rocketmq.common.protocol.heartbeat.MessageModel;public class MyConsumer {    private final Logger logger = LoggerFactory.getLogger(MyConsumer.class);    private DefaultMQPushConsumer defaultMQPushConsumer;    private String namesrvAddr;    private String consumerGroup;    /**     * Spring bean init-method     */    public void init() throws InterruptedException, MQClientException {        // 参数信息        logger.info("DefaultMQPushConsumer initialize!");        logger.info(consumerGroup);        logger.info(namesrvAddr);        // 一个应用创建一个Consumer，由应用来维护此对象，可以设置为全局对象或者单例<br>        // 注意：ConsumerGroupName需要由应用来保证唯一        defaultMQPushConsumer = new DefaultMQPushConsumer(consumerGroup);        defaultMQPushConsumer.setNamesrvAddr(namesrvAddr);        defaultMQPushConsumer.setInstanceName(String.valueOf(System.currentTimeMillis()));        // 订阅指定MyTopic下tags等于MyTag        defaultMQPushConsumer.subscribe("MyTopic", "MyTag");        // 设置Consumer第一次启动是从队列头部开始消费还是队列尾部开始消费<br>        // 如果非第一次启动，那么按照上次消费的位置继续消费        defaultMQPushConsumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);        // 设置为集群消费(区别于广播消费)        defaultMQPushConsumer.setMessageModel(MessageModel.CLUSTERING);        defaultMQPushConsumer.registerMessageListener(new MessageListenerConcurrently() {            // 默认msgs里只有一条消息，可以通过设置consumeMessageBatchMaxSize参数来批量接收消息            @Override            public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs, ConsumeConcurrentlyContext context) {                MessageExt msg = msgs.get(0);                if (msg.getTopic().equals("MyTopic")) {                    // TODO 执行Topic的消费逻辑                    if (msg.getTags() != null && msg.getTags().equals("MyTag")) {                        // TODO 执行Tag的消费                    }                }                // 如果没有return success ，consumer会重新消费该消息，直到return success                return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;            }        });        // Consumer对象在使用之前必须要调用start初始化，初始化一次即可<br>        defaultMQPushConsumer.start();        logger.info("DefaultMQPushConsumer start success!");    }    /**     * Spring bean destroy-method     */    public void destroy() {        defaultMQPushConsumer.shutdown();    }    // ----------------- setter --------------------    public void setNamesrvAddr(String namesrvAddr) {        this.namesrvAddr = namesrvAddr;    }    public void setConsumerGroup(String consumerGroup) {        this.consumerGroup = consumerGroup;    }}

 

5. 发消息

　　@Autowired    private MyProducer myProducer;    public void sendMessage() {        Message msg = new Message("MyTopic", "MyTag", (JSONObject.fromObject(someMessage)).getBytes());        SendResult sendResult = null;        try {            sendResult = myProducer.getDefaultMQProducer().send(msg);        } catch (MQClientException e) {            logger.error(e.getMessage() + String.valueOf(sendResult));        }        // 当消息发送失败时如何处理        if (sendResult == null || sendResult.getSendStatus() != SendStatus.SEND_OK) {            // TODO        }    }