环境

• 建议使用Linux 64位操作系统
• 64位JDK 1.8+
• Maven 3.2.x

配置环境

JAVA

使用yum安装

执行命令

$ yum install java-1.8.0-openjdk-devel.x86_64

配置全局变量

vi /etc/profile

复制下面三行到文件中

export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.171-8.b10.el6_9.x86_64
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin

使环境变量生效

$ source /etc/profile

验证安装是否成功

$ java -version

openjdk version "1.8.0_242"
OpenJDK Runtime Environment (build 1.8.0_242-b08)
OpenJDK 64-Bit Server VM (build 25.242-b08, mixed mode)

maven

创建安装目录

 $ mkdir /usr/local/maven
 $ cd /usr/local/maven

下载maven安装程序

$  wget http://mirrors.tuna.tsinghua.edu.cn/apache/maven/maven-3/3.3.9/binaries/apache-maven-3.3.9-bin.tar.gz

解压安装

$ tar -zxvf apache-maven-3.3.9-bin.tar.gz

修改环境变量

$ vim /etc/profile

在文件末尾增加

     M2_HOME==/usr/local/maven/apache-maven-3.3.9
     export PATH=${M2_HOME}/bin:${PATH}

使环境变量生效

 $ source /etc/profile

验证安装是否成功

 $ mvn -v

Error: JAVA_HOME is not defined correctly. We cannot execute /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.171-8.b10.el6_9.x86_64/bin/java

如果出现以上错误需要修改环境变量

$ vim /etc/profile

JAVA_HOME修改为

export JAVA_HOME=/usr

使环境变量生效

 $ source /etc/profile

查看maven版本

$ mvn -v
 Apache Maven 3.3.9 (bb52d8502b132ec0a5a3f4c09453c07478323dc5; 2015-11-11T00:41:47+08:00)
 Maven home: /usr/local/maven/apache-maven-3.3.9
 Java version: 1.8.0_242, vendor: Oracle Corporation
 Java home: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.242.b08-0.el7_7.x86_64/jre
 Default locale: en_US, platform encoding: UTF-8
 OS name: "linux", version: "3.10.0-1062.4.1.el7.x86_64", arch: "amd64", family: "unix"

服务器

安装

• 下载源代码到服务器
• 执行解压命令并构建代码

$ unzip rocketmq-all-4.7.0-source-release.zip
$ cd rocketmq-all-4.7.0/
$ mvn -Prelease-all -DskipTests clean install -U
$ cd distribution/target/rocketmq-4.7.0/rocketmq-4.7.0

修改配置

如果是在虚拟机内存较小的环境下执行下面方法，生成环境下最好使用默认的配置。

 $  vi bin/runbroker.sh

 JAVA_OPT="${JAVA_OPT} -server -Xms128m -Xmx128m -Xmn128m"

$ vi bin/runserver.sh
JAVA_OPT="${JAVA_OPT} -server -Xms128m -Xmx128m -Xmn128m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=320m"

访问配置

$ vim conf/broker.conf

添加

namesrvAddr = xx.xx.xx.xx:9876;xx.xx.xx.xx:9876  (多个地址以;分隔)
brokerIP1 = xx.xx.xx.xx

启动namesrv

$ sh bin/mqnamesrv -n "106.13.xx.xx:9876"  &

启动启动broker

$ sh bin/mqbroker -n 106.13.xx.xx:9876  -c conf/broker.conf  autoCreateTopicEnable=true &

客户端配置

增加依赖

客户端版本要和服务器版本一致

       <dependency>
           <groupId>org.apache.rocketmq</groupId>
           <artifactId>rocketmq-client</artifactId>
           <version>4.7.0</version>
       </dependency>

Producer

   DefaultMQProducer producer = new DefaultMQProducer("lzz23");
        producer.setNamesrvAddr("http://106.13.xx.xx:9876");
        try {
            producer.start();

            Message msg = new Message("TopicTest31",
                    "push",
                    "1",
                    "Just for test.".getBytes());

            SendResult result = producer.send(msg);
            System.out.println("id:" + result.getMsgId() +
                    " result:" + result.getSendStatus());

            msg = new Message("TopicTest31",
                    "push",
                    "2",
                    "Just for test.".getBytes());

            result = producer.send(msg);
            System.out.println("id:" + result.getMsgId() +
                    " result:" + result.getSendStatus());

            msg = new Message("TopicTest31",
                    "push",
                    "1",
                    "Just for test.".getBytes());

            result = producer.send(msg);
            System.out.println("id:" + result.getMsgId() +
                    " result:" + result.getSendStatus());
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            producer.shutdown();
        }

Consumer

 DefaultMQPushConsumer consumer =
                new DefaultMQPushConsumer("lzz23");
        consumer.setNamesrvAddr("106.13.xx.xx:9876");
        try {
            //订阅PushTopic下Tag为push的消息
            consumer.subscribe("TopicTest31", "push");

            //程序第一次启动从消息队列头取数据
            consumer.setConsumeFromWhere(
                    ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
            consumer.registerMessageListener(new MessageListenerConcurrently() {
                                                 public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> list, ConsumeConcurrentlyContext Context) {
                                                     Message msg = list.get(0);
//                            System.out.println(msg.toString());

                                                     String topic = msg.getTopic();
                                                     System.out.println("topic = " + topic);
                                                     byte[] body = msg.getBody();
                                                     System.out.println("body:  " + new String(body));
                                                     String keys = msg.getKeys();
                                                     System.out.println("keys = " + keys);
                                                     String tags = msg.getTags();
                                                     System.out.println("tags = " + tags);
                                                     System.out.println("-----------------------------------------------");

                                                     return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
                                                 }
                                             }
            );
            consumer.start();
        } catch (Exception e) {
            e.printStackTrace();
        }