1、引入rocketmq依赖
<dependency>
<groupId>com.alibaba.rocketmq</groupId>
<artifactId>rocketmq-client</artifactId>
<version>3.2.6</version>
</dependency>
2、配置application.properties文件
spring.application.name=springboot-rocketmq
server.port=8080
###producer
#该应用是否启用生产者
rocketmq.producer.isOnOff=on
#发送同一类消息的设置为同一个group,保证唯一,默认不需要设置,rocketmq会使用ip@pid(pid代表jvm名字)作为唯一标示
rocketmq.producer.groupName=${spring.application.name}
#mq的nameserver地址
rocketmq.producer.namesrvAddr=127.0.0.1:9876
#消息最大长度 默认1024*4(4M)
rocketmq.producer.maxMessageSize=4096
#发送消息超时时间,默认3000
rocketmq.producer.sendMsgTimeout=3000
#发送消息失败重试次数,默认2
rocketmq.producer.retryTimesWhenSendFailed=2
###consumer
##该应用是否启用消费者
rocketmq.consumer.isOnOff=on
rocketmq.consumer.groupName=${spring.application.name}
#mq的nameserver地址
rocketmq.consumer.namesrvAddr=127.0.0.1:9876
#该消费者订阅的主题和tags("*"号表示订阅该主题下所有的tags),格式:topic~tag1||tag2||tag3;topic2~*;
rocketmq.consumer.topics=DemoTopic~*;
rocketmq.consumer.consumeThreadMin=20
rocketmq.consumer.consumeThreadMax=64
#设置一次消费消息的条数,默认为1条
rocketmq.consumer.consumeMessageBatchMaxSize=1
3、消息生产者【MQProducerConfiguration】
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.util.StringUtils;
import com.alibaba.rocketmq.client.exception.MQClientException;
import com.alibaba.rocketmq.client.producer.DefaultMQProducer;
import com.clouds.common.rocketmq.constants.RocketMQErrorEnum;
import com.clouds.common.rocketmq.exception.RocketMQException;
/**
* 生产者配置
*/
@SpringBootConfiguration
public class MQProducerConfiguration {
public static final Logger LOGGER = LoggerFactory.getLogger(MQProducerConfiguration.class);
/**
* 发送同一类消息的设置为同一个group,保证唯一,默认不需要设置,rocketmq会使用ip@pid(pid代表jvm名字)作为唯一标示
*/
@Value("${rocketmq.producer.groupName}")
private String groupName;
@Value("${rocketmq.producer.namesrvAddr}")
private String namesrvAddr;
/**
* 消息最大大小,默认4M
*/
@Value("${rocketmq.producer.maxMessageSize}")
private Integer maxMessageSize;
/**
* 消息发送超时时间,默认3秒
*/
@Value("${rocketmq.producer.sendMsgTimeout}")
private Integer sendMsgTimeout;
/**
* 消息发送失败重试次数,默认2次
*/
@Value("${rocketmq.producer.retryTimesWhenSendFailed}")
private Integer retryTimesWhenSendFailed;
@Bean
public DefaultMQProducer getRocketMQProducer() throws RocketMQException {
if (StringUtils.isEmpty(this.groupName)) {
throw new RocketMQException(RocketMQErrorEnum.PARAMM_NULL, "groupName is blank", false);
}
if (StringUtils.isEmpty(this.namesrvAddr)) {
throw new RocketMQException(RocketMQErrorEnum.PARAMM_NULL, "nameServerAddr is blank", false);
}
DefaultMQProducer producer;
producer = new DefaultMQProducer(this.groupName);
producer.setNamesrvAddr(this.namesrvAddr);
//如果需要同一个jvm中不同的producer往不同的mq集群发送消息,需要设置不同的instanceName
//producer.setInstanceName(instanceName);
if (this.maxMessageSize != null) {
producer.setMaxMessageSize(this.maxMessageSize);
}
if (this.sendMsgTimeout != null) {
producer.setSendMsgTimeout(this.sendMsgTimeout);
}
//如果发送消息失败,设置重试次数,默认为2次
if (this.retryTimesWhenSendFailed != null) {
producer.setRetryTimesWhenSendFailed(this.retryTimesWhenSendFailed);
}
try {
producer.start();
LOGGER.info(String.format("producer is start ! groupName:[%s],namesrvAddr:[%s]"
, this.groupName, this.namesrvAddr));
} catch (MQClientException e) {
LOGGER.error(String.format("producer is error {}"
, e.getMessage(), e));
throw new RocketMQException(e);
}
return producer;
}
}
4、消息消费者【MQConsumerConfiguration】
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.util.StringUtils;
import com.alibaba.rocketmq.client.consumer.DefaultMQPushConsumer;
import com.alibaba.rocketmq.client.exception.MQClientException;
import com.alibaba.rocketmq.common.consumer.ConsumeFromWhere;
import com.clouds.common.rocketmq.constants.RocketMQErrorEnum;
import com.clouds.common.rocketmq.consumer.processor.MQConsumeMsgListenerProcessor;
import com.clouds.common.rocketmq.exception.RocketMQException;
/**
* 消费者Bean配置
*/
@SpringBootConfiguration
public class MQConsumerConfiguration {
public static final Logger LOGGER = LoggerFactory.getLogger(MQConsumerConfiguration.class);
@Value("${rocketmq.consumer.namesrvAddr}")
private String namesrvAddr;
@Value("${rocketmq.consumer.groupName}")
private String groupName;
@Value("${rocketmq.consumer.consumeThreadMin}")
private int consumeThreadMin;
@Value("${rocketmq.consumer.consumeThreadMax}")
private int consumeThreadMax;
@Value("${rocketmq.consumer.topics}")
private String topics;
@Value("${rocketmq.consumer.consumeMessageBatchMaxSize}")
private int consumeMessageBatchMaxSize;
@Autowired
private MQConsumeMsgListenerProcessor mqMessageListenerProcessor;
@Bean
public DefaultMQPushConsumer getRocketMQConsumer() throws RocketMQException {
if (StringUtils.isEmpty(groupName)) {
throw new RocketMQException(RocketMQErrorEnum.PARAMM_NULL, "groupName is null !!!", false);
}
if (StringUtils.isEmpty(namesrvAddr)) {
throw new RocketMQException(RocketMQErrorEnum.PARAMM_NULL, "namesrvAddr is null !!!", false);
}
if (StringUtils.isEmpty(topics)) {
throw new RocketMQException(RocketMQErrorEnum.PARAMM_NULL, "topics is null !!!", false);
}
DefaultMQPushConsumer consumer = new DefaultMQPushConsumer(groupName);
consumer.setNamesrvAddr(namesrvAddr);
consumer.setConsumeThreadMin(consumeThreadMin);
consumer.setConsumeThreadMax(consumeThreadMax);
consumer.registerMessageListener(mqMessageListenerProcessor);
/**
* 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
* 如果非第一次启动,那么按照上次消费的位置继续消费
*/
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_LAST_OFFSET);
/**
* 设置消费模型,集群还是广播,默认为集群
*/
//consumer.setMessageModel(MessageModel.CLUSTERING);
/**
* 设置一次消费消息的条数,默认为1条
*/
consumer.setConsumeMessageBatchMaxSize(consumeMessageBatchMaxSize);
try {
/**
* 设置该消费者订阅的主题和tag,如果是订阅该主题下的所有tag,则tag使用*;如果需要指定订阅该主题下的某些tag,则使用||分割,例如tag1||tag2||tag3
*/
String[] topicTagsArr = topics.split(";");
for (String topicTags : topicTagsArr) {
String[] topicTag = topicTags.split("~");
consumer.subscribe(topicTag[0], topicTag[1]);
}
consumer.start();
LOGGER.info("consumer is start !!! groupName:{},topics:{},namesrvAddr:{}", groupName, topics, namesrvAddr);
} catch (MQClientException e) {
LOGGER.error("consumer is start !!! groupName:{},topics:{},namesrvAddr:{}", groupName, topics, namesrvAddr, e);
throw new RocketMQException(e);
}
return consumer;
}
}
5、消费者消息路由【MQConsumeMsgListenerProcessor】
import java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;
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.common.message.MessageExt;
/**
* 消费者消费消息路由
*/
@Component
public class MQConsumeMsgListenerProcessor implements MessageListenerConcurrently {
private static final Logger logger = LoggerFactory.getLogger(MQConsumeMsgListenerProcessor.class);
/**
* 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<br/>
* 不要抛异常,如果没有return CONSUME_SUCCESS ,consumer会重新消费该消息,直到return CONSUME_SUCCESS
*/
@Override
public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs, ConsumeConcurrentlyContext context) {
if (CollectionUtils.isEmpty(msgs)) {
logger.info("接受到的消息为空,不处理,直接返回成功");
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
MessageExt messageExt = msgs.get(0);
logger.info("接受到的消息为:" + messageExt.toString());
if (messageExt.getTopic().equals("你的Topic")) {
if (messageExt.getTags().equals("你的Tag")) {
//TODO 判断该消息是否重复消费(RocketMQ不保证消息不重复,如果你的业务需要保证严格的不重复消息,需要你自己在业务端去重)
//TODO 获取该消息重试次数
int reconsume = messageExt.getReconsumeTimes();
if (reconsume == 3) {//消息已经重试了3次,如果不需要再次消费,则返回成功
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
//TODO 处理对应的业务逻辑
}
}
// 如果没有return success ,consumer会重新消费该消息,直到return success
return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
}
}
6、测试类【DefaultProductTest】
import org.junit.Test;
import org.junit.runner.RunWith;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import com.alibaba.rocketmq.client.exception.MQBrokerException;
import com.alibaba.rocketmq.client.exception.MQClientException;
import com.alibaba.rocketmq.client.producer.DefaultMQProducer;
import com.alibaba.rocketmq.client.producer.SendResult;
import com.alibaba.rocketmq.common.message.Message;
import com.alibaba.rocketmq.remoting.exception.RemotingException;
@RunWith(SpringRunner.class)
@SpringBootTest
public class DefaultProductTest {
private static final Logger logger = LoggerFactory.getLogger(DefaultProductTest.class);
/**
* 使用RocketMq的生产者
*/
@Autowired
private DefaultMQProducer defaultMQProducer;
/**
* 发送消息
*
* @throws InterruptedException
* @throws MQBrokerException
* @throws RemotingException
* @throws MQClientException
*/
@Test
public void send() throws MQClientException, RemotingException, MQBrokerException, InterruptedException {
String msg = "demo msg test";
logger.info("开始发送消息:" + msg);
Message sendMsg = new Message("DemoTopic", "DemoTag", msg.getBytes());
// 默认3秒超时
SendResult sendResult = defaultMQProducer.send(sendMsg);
logger.info("消息发送响应信息:" + sendResult.toString());
}
}
SpringBoot整合RocketMQ教程
本文详细介绍如何在SpringBoot项目中整合RocketMQ,包括引入依赖、配置文件设置、消息生产者与消费者配置、消息路由处理及测试代码示例。
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