RocketMQ与Spring集成

RocketMQ与Spring集成，采用push方式接收消息

maven依赖

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

监听处理类

public class MessageListenerImpl implements MessageListenerConcurrently {    private static final Logger LOG = LoggerFactory.getLogger(MessageListenerImpl.class);    @Override    public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs, ConsumeConcurrentlyContext context) {        LOG.info(Thread.currentThread().getName()                + " Receive New Messages: " + msgs.size()+";msg:" + msgs);        for (MessageExt msg : msgs) {            try {                System.out.println(">>>>"+new String(msg.getBody(),"UTF-8"));            } catch (UnsupportedEncodingException e) {                LOG.error(e.toString());            }        }        // 有异常抛出来，不要全捕获了，这样保证不能消费的消息下次重推，每次重新消费间隔：10s,30s,1m,2m,3m        // 如果没有异常会认为都成功消费        return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;    }}

Spring配置

    <!-- rocketmq配置 -->    <bean id="messageListeners" class="com.xx.service.mq.rocketmq.MessageListenerImpl"></bean>    <!-- 导入Spring配置文件 -->    <bean id="rocketmqConsumer" class="com.alibaba.rocketmq.client.consumer.DefaultMQPushConsumer" init-method="start" destroy-method="shutdown">        <property name="consumerGroup" value="${rocketmq.consumerGroup}"/>        <property name="instanceName">            <!-- 获取静态方法返回值作为参数值 -->            <bean class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">                <property name="targetClass">                    <value>com.xx.utils.RunTimeUtil</value>                </property>                <property name="targetMethod">                    <!-- 必须是静态方法 -->                    <value>getRocketMqUniqeInstanceName</value>                </property>            </bean>        </property>        <property name="namesrvAddr" value="${rocketmq.namesrvAddr}"/>        <property name="messageListener" ref="messageListeners"/>        <property name="subscription">            <map>                <entry key="${rocketmq.topic}" value="${rocketmq.tags}" />            </map>        </property>    </bean>

consumerGroup name不需要同生产者一致，可以自行定义，一般定义为同topic，应该具有唯一性；
instanceName不需要同生产者一致，可以自行定义，应该具有唯一性。便于将来可以在控制台根据名称搜索到对应服务。

RunTimeUtil

这是个生成唯一id的工具类

import java.lang.management.ManagementFactory;import java.lang.management.RuntimeMXBean;import java.util.Random;import java.util.concurrent.atomic.AtomicInteger;public class RunTimeUtil {    private static AtomicInteger index = new AtomicInteger();    public RunTimeUtil() {    }    public static int getPid() {        String info = getRunTimeInfo();        int pid = (new Random()).nextInt();        int index = info.indexOf("@");        if(index > 0) {            pid = Integer.parseInt(info.substring(0, index));        }        return pid;    }    public static String getRunTimeInfo() {        RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();        String info = runtime.getName();        return info;    }    public static String getRocketMqUniqeInstanceName() {        return "pid" + getPid() + "_index" + index.incrementAndGet();    }}