0 RocketMQ简介
0.1 介绍
RocketMQ是一个消息中间件。消息中间件中有两个角色：消息生产者和消息消费者。RocketMQ里同样有这两个概念，消息生产者负责创建消息并发送到RocketMQ服务器，RocketMQ服务器会将消息持久化到磁盘，消息消费者从RocketMQ服务器拉取消息并提交给应用消费。
0.2 特点
RocketMQ是一款分布式、队列模型的消息中间件，具有以下特点：
支持严格的消息顺序
支持Topic与Queue两种模式
亿级消息堆积能力
比较友好的分布式特性
同时支持Push与Pull方式消费消息
历经多次天猫双十一海量消息考验
0.3 部署结构
上图所示为RocketMQ的部署结构，图中Meta字样为RocketMQ早期代号。
1 RocketMQ 消息队列单机部署
1.1 系统配置环境
主机：Linux
内存：8G
硬盘：250G
CPU：4核
1.2 需要用到的软件包和文档
目前在Github上可下载最新的安装包alibaba-rocketmq-3.2.6.tar
下载地址：https://github.com/alibaba/RocketMQ
历史版本说明文档：Metaq原理与应用.docx
备注：RocketMQ早起在淘宝内部叫Metaq，去年改名为RocketMQ，不过该文档是针对历史版本的Metaq，仅供参考和熟悉一些概念。
1.3 服务器java环境
$java -version
java version "1.8.0_45"Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)12341234
1.4 rocketmq服务端安装
解压alibaba-rocketmq-3.2.6.tar
tar xvf alibaba-rocketmq-3.1.8.tar.gz -C /opt/11
配置rocketmq的环境变量，在/etc/profile最后添加
export ROCKETMQ_HOME=/opt/alibaba-rocketmq
export PATH=$JAVA_HOME/bin:$ROCKETMQ_HOME/bin:$PATH1212
使rocketmq的环境变量生效
source /etc/profile11
给下列命令可执行权限
cd /opt/alibaba-rocketmq/bin/;
chmod +x mqadmin mqbroker mqfiltersrv mqshutdown mqnamesrv1212
新建日志文件夹
cd /opt/alibaba-rocketmq
mkdir log1212
启动nameserver
nohup mqnamesrv 1>/opt/alibaba-rocketmq/log/ng.log 2>/opt/alibaba-rocketmq/log/ng-err.log &
查看启动状态
$ps aux|grep java
125233 12248 21.1 0.9 7151512 75844 pts/1 Sl 11:37 0:01 /opt/java/jdk1.8.0_45/bin/java -server -Xms4g -Xmx4g -Xmn2g -XX:PermSize=128m -XX:MaxPermSize=320m -XX:+UseConcMarkSweepGC -XX:+UseCMSCompactAtFullCollection -XX:CMSInitiatingOccupancyFraction=70 -XX:+CMSParallelRemarkEnabled -XX:SoftRefLRUPolicyMSPerMB=0 -XX:+CMSClassUnloadingEnabled -XX:SurvivorRatio=8 -XX:+DisableExplicitGC -verbose:gc -Xloggc:/home/xiaolong.xiao/rmq_srv_gc.log -XX:+PrintGCDetails -XX:-OmitStackTraceInFastThrow -Djava.ext.dirs=/opt/alibaba-rocketmq/bin/../lib -cp .:/opt/alibaba-rocketmq/bin/../conf:.:/opt/java/jdk1.8.0_45/lib/dt.jar:/opt/java/jdk1.8.0_45/lib/tools.jar com.alibaba.rocketmq.namesrv.NamesrvStartup
验证nameserver是否启动
$tail -f /opt/alibaba-rocketmq/log/ng.log
The Name Server boot success.
启动broker，在启动borker之前需要指定nameserver地址，其中10.125.1.186为所在服务器IP
export NAMESRV_ADDR=10.125.1.186:9876
nohup mqbroker >/opt/alibaba-rocketmq/log/mq.log &
验证mqbroker是否启动
tail -f /opt/alibaba-rocketmq/log/mq.log
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=128m; support was removed in 8.0
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=320m; support was removed in 8.0
Java HotSpot(TM) 64-Bit Server VM warning: UseCMSCompactAtFullCollection is deprecated and will likely be removed in a future release.
The broker[e010125001186.bja, 10.125.1.186:10911] boot success. and name server is 10.125.1.186:9876
最后配置防火墙
nameserver端口为9876
broker端口为10911
lokkit -p 9876:tcp -p 10911:tcp
1
1
关闭nameserver broker执行的命令
mqshutdown namesrv
mqshutdown broker
关闭nameserver
mqshutdown namesrv
The mqnamesrv(12248) is running...
Send shutdown request to mqnamesrv(12248) OK
关闭broker
$mqshutdown broker
The mqbroker(13634) is running...
Send shutdown request to mqbroker(13634) OK
安装成功显示结果：
这里写图片描述
2 java客户端使用RocketMQ 消息队列
2.1 依赖配置
<!-- RocketMQ Java SDK -->
<dependency>
<groupId>com.alibaba.rocketmq</groupId>
<artifactId>rocketmq-client</artifactId>
<version>3.2.6</version>
</dependency>
2.2 创建生产者
用来获取一个单例的生产者。
package com.autonavi.rocketmq.producer;
import com.alibaba.rocketmq.client.exception.MQClientException;
import com.alibaba.rocketmq.client.producer.DefaultMQProducer;
/**
* @author dddd
* @description 消息生产者
* @date 2016-04-07
*/
public class Producer {
/*
* Constructs a client instance with your account for accessing DefaultMQProducer
*/
private static DefaultMQProducer producer = new DefaultMQProducer("ProducerGroupName");
private static int initialState = 0;
private Producer() {
}
public static DefaultMQProducer getDefaultMQProducer(){
if(producer == null){
producer = new DefaultMQProducer("ProducerGroupName");
}
if(initialState == 0){
producer.setNamesrvAddr("100.125.1.186:9876");
try {
producer.start();
} catch (MQClientException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return null;
}
initialState = 1;
}
return producer;
}
}
2.3 创建消费者
用来获取一个单例的消费者。消费者类似于直接操作数据库的对象，比如生产者下了订单订火车票，消费者就一直监听，有订单消息过来了，就去执行下订单操作。
package com.autonavi.rocketmq.consumer;
import com.alibaba.rocketmq.client.consumer.DefaultMQPushConsumer;
import com.alibaba.rocketmq.common.consumer.ConsumeFromWhere;
/**
* @author dddd
* @description 消息消费者
* @date 2016-04-07
*/
public class Consumer {
/*
* Constructs a client instance with your account for accessing DefaultMQConsumer
*/
private static DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("ConsumerGroupName");
private static int initialState = 0;
private Consumer() {
}
public static DefaultMQPushConsumer getDefaultMQPushConsumer(){
if(consumer == null){
consumer = new DefaultMQPushConsumer("ConsumerGroupName");
}
if(initialState == 0){
consumer.setNamesrvAddr("100.125.1.186:9876");
consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
initialState = 1;
}
return consumer;
}
}
2.4 创建生产和消费服务
package com.autonavi.rocketmq.service;
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.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.common.message.MessageExt;
import com.alibaba.rocketmq.remoting.exception.RemotingException;
import com.autonavi.rocketmq.consumer.Consumer;
import com.autonavi.rocketmq.producer.Producer;
public class Test {
private static final Logger logger = LoggerFactory.getLogger(Test.class);
public static void main(String[] args){
sendMsg();
}
public static void sendMsg(){
// 获取消息生产者
DefaultMQProducer producer = Producer.getDefaultMQProducer();
try {
for(int i=0;i<2000;i++){
Message msg = new Message(
"TopicTest1", // topic
"TagA", // tag
"OrderID00"+i, // key
("Hello MetaQ"+i).getBytes()); // body
SendResult sendResult = producer.send(msg);
//logger.info("sendResult:{}", sendResult);
}
} catch (MQClientException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (RemotingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (MQBrokerException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
producer.shutdown();
}
public static void receiveMsg(){
// 获取消息生产者
DefaultMQPushConsumer consumer = Consumer.getDefaultMQPushConsumer();
// 订阅主体
try {
consumer.subscribe("TopicTest1", "*");
consumer.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
*/
public ConsumeConcurrentlyStatus consumeMessage(
List<MessageExt> msgs, ConsumeConcurrentlyContext context) {
logger.info("currentThreadName:{} and Receive New Messages:{}",Thread.currentThread().getName(),msgs);
MessageExt msg = msgs.get(0);
if (msg.getTopic().equals("TopicTest1")) {
// 执行TopicTest1的消费逻辑
if (msg.getTags() != null && msg.getTags().equals("TagA")) {
// 执行TagA的消费
logger.info("MsgBody:{}",new String(msg.getBody()));
} else if (msg.getTags() != null
&& msg.getTags().equals("TagC")) {
// 执行TagC的消费
} else if (msg.getTags() != null
&& msg.getTags().equals("TagD")) {
// 执行TagD的消费
}
} else if (msg.getTopic().equals("TopicTest2")) {
// 执行TopicTest2的消费逻辑
}
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>
*/
consumer.start();
logger.info("Consumer Started.");
} catch (MQClientException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
2.5 测试效果
2.5.1 生产100个消息
2016-04-07-16-01 [main] [com.autonavi.rocketmq.service.Test] [INFO] - sendResult:SendResult [sendStatus=SEND_OK, msgId=0A7D01BA00002A9F000000000005C286, messageQueue=MessageQueue [topic=TopicTest1, brokerName=e010125001186.bja, queueId=0], queueOffset=617]
2016-04-07-16-01 [main] [com.autonavi.rocketmq.service.Test] [INFO] - sendResult:SendResult [sendStatus=SEND_OK, msgId=0A7D01BA00002A9F000000000005C31B, messageQueue=MessageQueue [topic=TopicTest1, brokerName=e010125001186.bja, queueId=1], queueOffset=616]
2016-04-07-16-01 [main] [com.autonavi.rocketmq.service.Test] [INFO] - sendResult:SendResult [sendStatus=SEND_OK, msgId=0A7D01BA00002A9F000000000005C3B0, messageQueue=MessageQueue [topic=TopicTest1, brokerName=e010125001186.bja, queueId=2], queueOffset=614]
2016-04-07-16-01 [main] [com.autonavi.rocketmq.service.Test] [INFO] - sendResult:SendResult [sendStatus=SEND_OK, msgId=0A7D01BA00002A9F000000000005C445, messageQueue=MessageQueue [topic=TopicTest1, brokerName=e010125001186.bja, queueId=3], queueOffset=614]
2016-04-07-16-01 [main] [com.autonavi.rocketmq.service.Test] [INFO] - sendResult:SendResult [sendStatus=SEND_OK, msgId=0A7D01BA00002A9F000000000005C4DA, messageQueue=MessageQueue [topic=TopicTest1, brokerName=e010125001186.bja, queueId=0], queueOffset=618]
2016-04-07-16-01 [main] [com.autonavi.rocketmq.service.Test] [INFO] - sendResult:SendResult [sendStatus=SEND_OK, msgId=0A7D01BA00002A9F000000000005C56F, messageQueue=MessageQueue [topic=TopicTest1, brokerName=e010125001186.bja, queueId=1], queueOffset=617]
2016-04-07-16-01 [main] [com.autonavi.rocketmq.service.Test] [INFO] - sendResult:SendResult [sendStatus=SEND_OK, msgId=0A7D01BA00002A9F000000000005C604, messageQueue=MessageQueue [topic=TopicTest1, brokerName=e010125001186.bja, queueId=2], queueOffset=615]
2016-04-07-16-01 [main] [com.autonavi.rocketmq.service.Test] [INFO] - sendResult:SendResult [sendStatus=SEND_OK, msgId=0A7D01BA00002A9F000000000005C699, messageQueue=MessageQueue [topic=TopicTest1, brokerName=e010125001186.bja, queueId=3], queueOffset=615]
2016-04-07-16-01 [main] [com.autonavi.rocketmq.service.Test] [INFO] - sendResult:SendResult [sendStatus=SEND_OK, msgId=0A7D01BA00002A9F000000000005C72E, messageQueue=MessageQueue [topic=TopicTest1, brokerName=e010125001186.bja, queueId=0], queueOffset=619]
2016-04-07-16-01 [main] [com.autonavi.rocketmq.service.Test] [INFO] - sendResult:SendResult [sendStatus=SEND_OK, msgId=0A7D01BA00002A9F000000000005C7C3, messageQueue=MessageQueue [topic=TopicTest1, brokerName=e010125001186.bja, queueId=1], queueOffset=618]
2016-04-07-16-01 [main] [com.autonavi.rocketmq.service.Test] [INFO] - sendResult:SendResult [sendStatus=SEND_OK, msgId=0A7D01BA00002A9F000000000005C858, messageQueue=MessageQueue [topic=TopicTest1, brokerName=e010125001186.bja, queueId=2], queueOffset=616]
2016-04-07-16-01 [main] [com.autonavi.rocketmq.service.Test] [INFO] - sendResult:SendResult [sendStatus=SEND_OK, msgId=0A7D01BA00002A9F000000000005C8EF, messageQueue=MessageQueue [topic=TopicTest1, brokerName=e010125001186.bja, queueId=3], queueOffset=616]
2016-04-07-16-01 [main] [com.autonavi.rocketmq.service.Test] [INFO] - sendResult:SendResult [sendStatus=SEND_OK, msgId=0A7D01BA00002A9F000000000005C986, messageQueue=MessageQueue [topic=TopicTest1, brokerName=e010125001186.bja, queueId=0], queueOffset=620]
2016-04-07-16-01 [main] [com.autonavi.rocketmq.service.Test] [INFO] - sendResult:SendResult [sendStatus=SEND_OK, msgId=0A7D01BA00002A9F000000000005CA1D, messageQueue=MessageQueue [topic=TopicTest1, brokerName=e010125001186.bja, queueId=1], queueOffset=619]
...
2.5.2 消费100个消息
2016-04-07-16-04 [main] [com.autonavi.rocketmq.service.Test] [INFO] - Consumer Started.
2016-04-07-16-04 [ConsumeMessageThread_11] [com.autonavi.rocketmq.service.Test] [INFO] - currentThreadName:ConsumeMessageThread_11 and Receive New Messages:[MessageExt [queueId=3, storeSize=151, queueOffset=618, sysFlag=0, bornTimestamp=1460016115897, bornHost=/30.85.231.35:58198, storeTimestamp=1460016115856, storeHost=/10.125.1.186:10911, msgId=0A7D01BA00002A9F000000000005CDA7, commitLogOffset=380327, bodyCRC=901334138, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message [topic=TopicTest1, flag=0, properties={TAGS=TagA, KEYS=OrderID0019, WAIT=true, MAX_OFFSET=639, MIN_OFFSET=0}, body=13]]]
2016-04-07-16-04 [ConsumeMessageThread_8] [com.autonavi.rocketmq.service.Test] [INFO] - currentThreadName:ConsumeMessageThread_8 and Receive New Messages:[MessageExt [queueId=3, storeSize=149, queueOffset=615, sysFlag=0, bornTimestamp=1460016115722, bornHost=/30.85.231.35:58198, storeTimestamp=1460016115680, storeHost=/10.125.1.186:10911, msgId=0A7D01BA00002A9F000000000005C699, commitLogOffset=378521, bodyCRC=260218519, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message [topic=TopicTest1, flag=0, properties={TAGS=TagA, KEYS=OrderID007, WAIT=true, MAX_OFFSET=639, MIN_OFFSET=0}, body=12]]]
2016-04-07-16-04 [ConsumeMessageThread_9] [com.autonavi.rocketmq.service.Test] [INFO] - currentThreadName:ConsumeMessageThread_9 and Receive New Messages:[MessageExt [queueId=3, storeSize=151, queueOffset=616, sysFlag=0, bornTimestamp=1460016115773, bornHost=/30.85.231.35:58198, storeTimestamp=1460016115734, storeHost=/10.125.1.186:10911, msgId=0A7D01BA00002A9F000000000005C8EF, commitLogOffset=379119, bodyCRC=996330568, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message [topic=TopicTest1, flag=0, properties={TAGS=TagA, KEYS=OrderID0011, WAIT=true, MAX_OFFSET=639, MIN_OFFSET=0}, body=13]]]
2016-04-07-16-04 [ConsumeMessageThread_3] [com.autonavi.rocketmq.service.Test] [INFO] - currentThreadName:ConsumeMessageThread_3 and Receive New Messages:[MessageExt [queueId=3, storeSize=149, queueOffset=614, sysFlag=0, bornTimestamp=1460016115669, bornHost=/30.85.231.35:58198, storeTimestamp=1460016115629, storeHost=/10.125.1.186:10911, msgId=0A7D01BA00002A9F000000000005C445, commitLogOffset=377925, bodyCRC=149904014, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message [topic=TopicTest1, flag=0, properties={TAGS=TagA, KEYS=OrderID003, WAIT=true, MAX_OFFSET=639, MIN_OFFSET=0}, body=12]]]
2016-04-07-16-04 [ConsumeMessageThread_12] [com.autonavi.rocketmq.service.Test] [INFO] - currentThreadName:ConsumeMessageThread_12 and Receive New Messages:[MessageExt [queueId=3, storeSize=151, queueOffset=619, sysFlag=0, bornTimestamp=1460016115951, bornHost=/30.85.231.35:58198, storeTimestamp=1460016115911, storeHost=/10.125.1.186:10911, msgId=0A7D01BA00002A9F000000000005D003, commitLogOffset=380931, bodyCRC=2118254247, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message [topic=TopicTest1, flag=0, properties={TAGS=TagA, KEYS=OrderID0023, WAIT=true, MAX_OFFSET=639, MIN_OFFSET=0}, body=13]]]
2016-04-07-16-04 [ConsumeMessageThread_11] [com.autonavi.rocketmq.service.Test] [INFO] - MsgBody:Hello MetaQ19
2016-04-07-16-04 [ConsumeMessageThread_1] [com.autonavi.rocketmq.service.Test] [INFO] - currentThreadName:ConsumeMessageThread_1 and Receive New Messages:[MessageExt [queueId=1, storeSize=149, queueOffset=616, sysFlag=0, bornTimestamp=1460016115635, bornHost=/30.85.231.35:58198, storeTimestamp=1460016115594, storeHost=/10.125.1.186:10911, msgId=0A7D01BA00002A9F000000000005C31B, commitLogOffset=377627, bodyCRC=1726036898, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message [topic=TopicTest1, flag=0, properties={TAGS=TagA, KEYS=OrderID001, WAIT=true, MAX_OFFSET=641, MIN_OFFSET=0}, body=12]]]
2016-04-07-16-04 [ConsumeMessageThread_1] [com.autonavi.rocketmq.service.Test] [INFO] - MsgBody:Hello MetaQ1
2016-04-07-16-04 [ConsumeMessageThread_18] [com.autonavi.rocketmq.service.Test] [INFO] - currentThreadName:ConsumeMessageThread_18 and Receive New Messages:[MessageExt [queueId=3, storeSize=151, queueOffset=625, sysFlag=0, bornTimestamp=1460016116319, bornHost=/30.85.231.35:58198, storeTimestamp=1460016116278, storeHost=/10.125.1.186:10911, msgId=0A7D01BA00002A9F000000000005DE2B, commitLogOffset=384555, bodyCRC=796302648, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message [topic=TopicTest1, flag=0, properties={TAGS=TagA, KEYS=OrderID0047, WAIT=true, MAX_OFFSET=639, MIN_OFFSET=0}, body=13]]]
2016-04-07-16-04 [ConsumeMessageThread_18] [com.autonavi.rocketmq.service.Test] [INFO] - MsgBody:Hello MetaQ47
2016-04-07-16-04 [ConsumeMessageThread_4] [com.autonavi.rocketmq.service.Test] [INFO] - currentThreadName:ConsumeMessageThread_4 and Receive New Messages:[MessageExt [queueId=2, storeSize=149, queueOffset=614, sysFlag=0, bornTimestamp=1460016115648, bornHost=/30.85.231.35:58198, storeTimestamp=1460016115608, storeHost=/10.125.1.186:10911, msgId=0A7D01BA00002A9F000000000005C3B0, commitLogOffset=377776, bodyCRC=2145937944, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message [topic=TopicTest1, flag=0, properties={TAGS=TagA, KEYS=OrderID002, WAIT=true, MAX_OFFSET=639, MIN_OFFSET=0}, body=12]]]
2016-04-07-16-04 [ConsumeMessageThread_4] [com.autonavi.rocketmq.service.Test] [INFO] - MsgBody:Hello MetaQ2
2016-04-07-16-04 [ConsumeMessageThread_20] [com.autonavi.rocketmq.service.Test] [INFO] - currentThreadName:ConsumeMessageThread_20 and Receive New Messages:[MessageExt [queueId=3, storeSize=151, queueOffset=627, sysFlag=0, bornTimestamp=1460016116436, bornHost=/30.85.231.35:58198, storeTimestamp=1460016116393, storeHost=/10.125.1.186:10911, msgId=0A7D01BA00002A9F000000000005E2E3, commitLogOffset=385763, bodyCRC=1482935637, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message [topic=TopicTest1, flag=0, properties={TAGS=TagA, KEYS=OrderID0055, WAIT=true, MAX_OFFSET=639, MIN_OFFSET=0}, body=13]]]
2016-04-07-16-04 [ConsumeMessageThread_20] [com.autonavi.rocketmq.service.Test] [INFO] - MsgBody:Hello MetaQ55
2016-04-07-16-04 [ConsumeMessageThread_2] [com.autonavi.rocketmq.service.Test] [INFO] - currentThreadName:ConsumeMessageThread_2 and Receive New Messages:[MessageExt [queueId=0, storeSize=149, queueOffset=617, sysFlag=0, bornTimestamp=1460016115587, bornHost=/30.85.231.35:58198, storeTimestamp=1460016115577, storeHost=/10.125.1.186:10911, msgId=0A7D01BA00002A9F000000000005C286, commitLogOffset=377478, bodyCRC=300288820, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message [topic=TopicTest1, flag=0, properties={TAGS=TagA, KEYS=OrderID000, WAIT=true, MAX_OFFSET=642, MIN_OFFSET=0}, body=12]]]
2016-04-07-16-04 [ConsumeMessageThread_2] [com.autonavi.rocketmq.service.Test] [INFO] - MsgBody:Hello MetaQ0
3 总结
本文仅供初学者学习如何使用RocketMQ，目前仅仅是单机配置，还没有涉及到集群等配置，后续会不断学习和记录。过程中有不对的地方欢迎吐槽呢。
4 参考文档
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