[Java知识库]RocketMQ环境搭建、环境测试、以及和SpringBoot整合代码演示

一、RocketMQ环境搭建

1、软件准备

RocketMQ最新版本：4.5.1
下载地址

2、环境要求

JDK1.8以上
Linux64位系统(CentOS Linux release 7.7.1908)
源码安装需要安装Maven 3.2.x
4G+ free (如果给不到虚拟机4G可用内存 可以修改rocketma配置 下面介绍)

3、安装及启动

1. 下载rocketmq

    #下载
    wget https://archive.apache.org/dist/rocketmq/4.5.1/rocketmq-all-4.5.1-bin-release.zip
   

2. 修改脚本

    bin/runserver.sh
    bin/runbroker.sh
    bin/tools.sh
   

• vim runserver.sh
  

• vim runbroker.sh
  

• vim tools.sh
  

3. 启动NameServer

    # 1.启动NameServer
    mqnamesrv
    # 2.查看启动日志
    tail -f ~/logs/rocketmqlogs/namesrv.log
   

4. 启动Broker

    # 1.启动Broker
    mqbroker -n localhost:9876
    # 2.查看启动日志
    tail -f ~/logs/rocketmqlogs/broker.log
   

二、RocketMQ环境测试

1、发送消息

# 1.设置环境变量
export NAMESRV_ADDR=localhost:9876
# 2.使用安装包的Demo发送消息
sh bin/tools.sh org.apache.rocketmq.example.quickstart.Producer

2、接收消息

# 1.设置环境变量
export NAMESRV_ADDR=localhost:9876
# 2.接收消息
sh bin/tools.sh org.apache.rocketmq.example.quickstart.Consumer

3、关闭RocketMQ

# 1.关闭NameServer
mqshutdown namesrv
# 2.关闭Broker
mqshutdown broker

三、RocketMQ和SpringBoot的整合

1、消息生产者

1. 添加依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.ckw.rocket</groupId>
    <artifactId>springboot-rocketmq-produer</artifactId>
    <version>1.0-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.1.RELEASE</version>
    </parent>

    <properties>
        <rocketmq-spring-boot-starter-version>2.0.3</rocketmq-spring-boot-starter-version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.apache.rocketmq</groupId>
            <artifactId>rocketmq-spring-boot-starter</artifactId>
            <version>${rocketmq-spring-boot-starter-version}</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.6</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

    </dependencies>

</project>

2. 配置文件

    # rocketmq的nameserver地址
    rocketmq.name-server=IP:9876
    # 指定生产组名称
    rocketmq.producer.group=producer_grp
   

3. 启动类

@SpringBootApplication
public class MQProducerApplication {
	public static void main(String[] args) {
		SpringApplication.run(MQSpringBootApplication.class);
	}
}

4. 测试类

@RunWith(SpringRunner.class)
@SpringBootTest(classes = {MyRocketProducerApplication.class})
public class MyRocketProducerApplicationTest {

    @Autowired
    private RocketMQTemplate rocketMQTemplate;

    @Test
    public void testSendMessage() {
        // 用于向broker发送消息
        // 第一个参数是topic名称
        // 第二个参数是消息内容
        this.rocketMQTemplate.convertAndSend(
                "tp_springboot",
                "springboot: hello ckw"
        );
    }

    @Test
    public void testSendMessages() {
        for (int i = 0; i < 100; i++) {
            // 用于向broker发送消息
            // 第一个参数是topic名称
            // 第二个参数是消息内容
            this.rocketMQTemplate.convertAndSend(
                    "tp_springboot",
                    "springboot: hello ckw" + i
            );
        }
    }
}

2、消息消费者

1. 添加依赖
   同消息生产者

2. 配置文件
   同消息生产者

3. 启动类
   同消息生产者

4. 消息监听器

@Slf4j
@Component
@RocketMQMessageListener(topic = "tp_springboot", consumerGroup = "consumer_grp")
public class MyRocketListener implements RocketMQListener<String> {
    @Override
    public void onMessage(String message) {
        // 处理broker推送过来的消息
        log.info(message);
    }
}

注意： 可能会启动报错，org.apache.rocketmq.remoting.exception.RemotingConnectException: connect to <172.17.0.1:10911> failed
新增配置 vim conf/broker.conf

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