单机版RocketMQ搭建并测试

单机安装启动步骤如下：

1：下载，并解压安装包，window截图如下：

2：配置JAVA ，ROCKETMQ 环境变量，因为很简单，我直接贴进来两个链接，按照步骤操作即可

• JAVA环境变量配置（1.8）
• ROCKETMQ环境变量配置

3：启动NameServer

window : 切换到ROCKETMQ 的bin目录下执行命令： start start mqnamesrv.cmd

弹出如下图所示证明nameServer启动成功

也可以打开日志查看nameServer的启动日志，日志路径地址： ${user}/logs/rocketmqlogs/namesrv.log

如图：

如需要修改日志路径，通过修改%ROCKETMQ_HOME%conf/logback_namesrv.xml 中的路径

4：启动Broker

window : 切换到ROCKETMQ 的bin目录下执行命令： start mqbroker.cmd

弹出如下图所示证明Broker启动成功

同样也可以打开日志查看Broker的启动日志，日志路径地址： ${user}/logs/rocketmqlogs/broker.log

如图：

如需要修改日志路径，通过修改%ROCKETMQ_HOME%conf/logback_broker.xml 中的路径。

附件为本人修改日志路径为ROCKETMQ根目录下配置文件, 启动时需要切换到bin目录下

logback_broker.xmllogback_namesrv.xml

 

此时最简单的服务端单机ROCKETMQ已经搭建并启动成功。接下来就是producer 和consumer收发消息示例

 

5：生产者发送消息最简配置代码如下（因为是入门案例，我们删除一切可以删去的配置项，做到最简，后面慢慢不断完善）：

package com.dsx.standalone;

import com.alibaba.fastjson.JSONObject;
import org.apache.rocketmq.client.exception.MQBrokerException;
import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.client.producer.DefaultMQProducer;
import org.apache.rocketmq.client.producer.SendResult;
import org.apache.rocketmq.common.message.Message;
import org.apache.rocketmq.remoting.exception.RemotingException;

/**
 * @author : tianwenqing
 * @version : 1.0
 * @date : 2020-06-01 14:59
 * @description :
 **/
public class ProducerTest {

    public static void main(String[] args) throws MQClientException, RemotingException, InterruptedException, MQBrokerException {
        DefaultMQProducer producer = new DefaultMQProducer();

        //必须设置生产者组，否则会抛出异常：
        //Exception in thread "main" org.apache.rocketmq.client.exception.MQClientException: producerGroup can not equal DEFAULT_PRODUCER, please specify another one.
        //这个校验在 at org.apache.rocketmq.client.impl.producer.DefaultMQProducerImpl.checkConfig(DefaultMQProducerImpl.java:242)
        producer.setProducerGroup("test-2");

        //TODO
        producer.setNamesrvAddr("192.168.0.105:9876");

        //创建启动生产者
        producer.start();

        Message message = new Message();
        //必须指定发送到哪个topic，否则会抛出异常
        //Exception in thread "main" org.apache.rocketmq.client.exception.MQClientException: The specified topic is blank
        //这个校验在 at org.apache.rocketmq.client.Validators.checkTopic(Validators.java:106)
        message.setTopic("firsTopic2");

        //必须指定消息体，否则抛出异常
        //Exception in thread "main" org.apache.rocketmq.client.exception.MQClientException: CODE: 13  DESC: the message body is null
        //这个校验在 at org.apache.rocketmq.client.Validators.checkMessage(Validators.java:91)
        message.setBody("你好".getBytes());

        //发送消息
        SendResult send = producer.send(message);

        System.out.println(JSONObject.toJSONString(send));


        //关闭发送者
        producer.shutdown();
    }
}

附源码地址：https://gitee.com/disanxian/home_rocketmq_test.git

6：消费者接受消息示例代码：

package com.dsx.standalone;

import com.alibaba.fastjson.JSONObject;
import org.apache.rocketmq.client.consumer.DefaultMQPushConsumer;
import org.apache.rocketmq.client.consumer.listener.ConsumeConcurrentlyContext;
import org.apache.rocketmq.client.consumer.listener.ConsumeConcurrentlyStatus;
import org.apache.rocketmq.client.consumer.listener.MessageListenerConcurrently;
import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.common.message.MessageExt;

import java.util.List;

/**
 * @author : tianwenqing
 * @version : 1.0
 * @date : 2020-06-02 11:02
 * @description :
 **/
public class ConsumerTest {

    public static void main(String[] args) throws MQClientException {
        DefaultMQPushConsumer consumer = new DefaultMQPushConsumer();

        //必须设置消费组，否则抛出异常：
        //Exception in thread "main" org.apache.rocketmq.client.exception.MQClientException: consumerGroup can not equal DEFAULT_CONSUMER, please specify another one.
        //这个校验再     at org.apache.rocketmq.client.impl.consumer.DefaultMQPushConsumerImpl.checkConfig(DefaultMQPushConsumerImpl.java:670)
        consumer.setConsumerGroup("consumer_group_3");


        //必须设置namesrv，如发送者抛出异常一致：
        //Exception in thread "main" java.lang.IllegalStateException: org.apache.rocketmq.remoting.exception.RemotingConnectException: connect to null failed
        consumer.setNamesrvAddr("rocket-ns-2.yunzong:9876");

        consumer.subscribe("parking-gateway-2","*");

        //必须设置消息监听器，否则抛出异常：
        //Exception in thread "main" org.apache.rocketmq.client.exception.MQClientException: messageListener is null
        //这个校验再     at org.apache.rocketmq.client.impl.consumer.DefaultMQPushConsumerImpl.checkConfig(DefaultMQPushConsumerImpl.java:716)
        //consumer.setMessageListener((MessageListenerConcurrently) ConsumerTest::consumeMessage);

        consumer.registerMessageListener(new MessageListenerConcurrently() {
            @Override
            public ConsumeConcurrentlyStatus consumeMessage(List msgs, ConsumeConcurrentlyContext context) {
                System.out.println(msgs);
                return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
            }
        });

        consumer.start();
        System.out.println("启动成功");

    }

    private static ConsumeConcurrentlyStatus consumeMessage(List msgs, ConsumeConcurrentlyContext context) {
        System.out.println(JSONObject.toJSONString(msgs));
        return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
    }
}

附源码地址：https://gitee.com/disanxian/home_rocketmq_test.git

7：单机环境配置参数：

配置参数分为三部分介绍：

1：NameServer ,Broker运行的虚拟机环境

运行时环境是指对NameServer, Broker 运行时JVM参数配置，配置路径在：

%ROCKETMQ_HOME/bin/runserver.cmd

%ROCKETMQ_HOME/bin/runbroker.cmd

%ROCKETMQ_HOME/bin/tools.cmd

分别根据实际运行情况修改文件示例代码，修改JVM参数

set "JAVA_OPT=%JAVA_OPT% -server -Xms1g -Xmx1g -Xmn256m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=128m

 

2：NameServer，Broker本身的配置

配置文件配置地址：%ROCKETMQ_HOME/conf/broker.conf

变量名	默认值	含义	备注
listenPort	10911	客户端监听boke的端口
namesrvAddr		nameServer地址，带端口号，默认端口号为：9876	当多个的时候，用逗号（，）隔开
brokerIP1		指定bokerIP地址	当物理机含有多个ip时，如果使用私有ip发布，则存在客户端不能访问的问题
brokerId	0	当为master的时候，id为0
brokerRole	ASYNC_MASTER	Broker角色，有同步主，异步主，从 三种角色

3：输出日志配置

日志输出配置也在%ROCKETMQ_HOME/conf 下，上文中单机启动NameServer ,Broker时已经介绍查看和修改方法。

 

 

 

FAQ

1：通过运维命令查看集群信息 ：mqadmin clusterList -n 127.0.0.1

      输出结果如图

表示并没有集群信息展示，怀疑是没有读到namespace信息，重新启动broker,手动指定配置文件地址（配置文件中配置namesrvAddr 参数）：

start mqbroker.cmd -c D:\software\work\rocketmq-all-4.7.0-bin-release\conf\broker.conf

重新查看集群信息：

这时已经启动成功，可以正常发送消息，所以此处的问题是单机启动的时候broker并没有读取到conf/broker.conf 配置文件，如何能读取到，具体的规则还未知。

2：发送消息，报错内容如下：

RocketMQLog:WARN No appenders could be found for logger (io.netty.util.internal.PlatformDependent0).
RocketMQLog:WARN Please initialize the logger system properly.
Exception in thread "main" org.apache.rocketmq.client.exception.MQClientException: No route info of this topic: firsTopic
See http://rocketmq.apache.org/docs/faq/ for further details.
    at org.apache.rocketmq.client.impl.producer.DefaultMQProducerImpl.sendDefaultImpl(DefaultMQProducerImpl.java:684)
    at org.apache.rocketmq.client.impl.producer.DefaultMQProducerImpl.send(DefaultMQProducerImpl.java:1342)
    at org.apache.rocketmq.client.impl.producer.DefaultMQProducerImpl.send(DefaultMQProducerImpl.java:1288)
    at org.apache.rocketmq.client.producer.DefaultMQProducer.send(DefaultMQProducer.java:324)
    at com.dsx.standalone.ProducerTest.main(ProducerTest.java:44)

没有topic路由，我们这里通过运维开启自动创建topic来解决。在broker.conf中添加如下配置，自动创建topic,默认开启

autoCreateTopicEnable=true