Spring Cloud 2.x系列之整合rocketMQ-阿里云开发者社区

RocketMQ出了4的版本，而且本身这个mq有事务消息，在分布式的场景中有很好的启发性和作用，而且本身它也是阿里开源到apache的一个项目，从出身还是实力来说都很不错的。

1、新建项目sc-rocketmq，对应的pom.xml如下

<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>spring-cloud</groupId>
    <artifactId>sc-rocketmq</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>sc-rocketmq</name>
    <url>http://maven.apache.org</url>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.4.RELEASE</version>
    </parent>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Finchley.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

        </dependencies>
    </dependencyManagement>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.apache.rocketmq</groupId>
            <artifactId>rocketmq-client</artifactId>
            <version>4.2.0</version>
        </dependency>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.44</version>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.25</version>
        </dependency>

    </dependencies>
</project>

Producer单从分类producer的官网doc来看主要分成3种：

DefaultMQProducer

TransactionMQProducer

messagingAccessPoint.createProducer()

本文主要说的是DefaultMQProducer和TransactionMQProducer

默认的producer是DefaultMQProducer，从官方的文档来看，前四个都是对这个producer的运用只是set的值不同而已，而且是很细微的变化而已。

24b10977fe32a3049b130cabf86e271c86a868cc

2、新建配置文件application.yml

server:
  port: 8182

spring:
  application:
    name: sc-rocketmq

rocketmq:
    consumer:
      groupName: consumerGroup # 消费者的组名
      consumeThreadMin: 2
      consumeThreadMax: 5
      consumeMessageBatchMaxSize: 10
      topics: rocketTopic,rocketTag
    producer:
      groupName: producerGroup # 生产者的组名
      maxMessageSize: 100
      sendMsgTimeout: 1000
      retryTimesWhenSendFailed: 3
    namesrvAddr: 127.0.0.1:9876 # NameServer地址

3、新建消息生产者类

读取application.yml配置：

package sc.rocketmq.config;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;

@ConfigurationProperties(prefix = "rocketmq.producer")
@Configuration
public class ProducerConfig {

    private String namesrvAddr;

    private String groupName;

    public String getNamesrvAddr() {
        return namesrvAddr;
    }

    public void setNamesrvAddr(String namesrvAddr) {
        this.namesrvAddr = namesrvAddr;
    }

    public String getGroupName() {
        return groupName;
    }

    public void setGroupName(String groupName) {
        this.groupName = groupName;
    }

    @Override
    public String toString() {
        return "ProducerConfig [namesrvAddr=" + namesrvAddr + ", groupName=" + groupName + "]";
    }
}

消息生产者：

package sc.rocketmq.config;

import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.client.producer.DefaultMQProducer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class ProducerConfigure {

    Logger log = LoggerFactory.getLogger(ProducerConfigure.class);

    @Autowired
    private ProducerConfig producerConfigure;

    /**
     * 创建普通消息发送者实例
     * 
     * @return
     * @throws MQClientException
     */
    @Bean
//    @ConditionalOnProperty(prefix = "rocketmq.producer", value = "default", havingValue = "true")
    public DefaultMQProducer defaultProducer() throws MQClientException {
        log.info(producerConfigure.toString());
        log.info("defaultProducer 正在创建---------------------------------------");
        DefaultMQProducer producer = new DefaultMQProducer(producerConfigure.getGroupName());
        producer.setNamesrvAddr(producerConfigure.getNamesrvAddr());
        producer.setVipChannelEnabled(false);
        producer.setRetryTimesWhenSendAsyncFailed(10);
        producer.start();
        log.info("rocketmq producer server开启成功---------------------------------.");
        return producer;
    }
}

4、新建消息消费者类

读取application.yml配置：

package sc.rocketmq.config;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;

@ConfigurationProperties(prefix = "rocketmq.consumer")
@Configuration
public class ConsumerConfig {

    private String groupName;

    private String namesrvAddr;

    public String getGroupName() {
        return groupName;
    }

    public void setGroupName(String groupName) {
        this.groupName = groupName;
    }

    public String getNamesrvAddr() {
        return namesrvAddr;
    }

    public void setNamesrvAddr(String namesrvAddr) {
        this.namesrvAddr = namesrvAddr;
    }

    @Override
    public String toString() {
        return "ConsumerConfig [groupName=" + groupName + ", namesrvAddr=" + namesrvAddr + "]";
    }

}

消息消费者类（抽象类）：

package sc.rocketmq.config;

import java.util.List;

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 org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;

@Configuration
public abstract class DefaultConsumerConfigure {

    Logger log = LoggerFactory.getLogger(DefaultConsumerConfigure.class);

    @Autowired
    private ConsumerConfig consumerConfig;

    // 开启消费者监听服务
    public void listener(String topic, String tag) throws MQClientException {
        log.info("开启" + topic + ":" + tag + "消费者-------------------");
        log.info(consumerConfig.toString());

        DefaultMQPushConsumer consumer = new DefaultMQPushConsumer(consumerConfig.getGroupName());

        consumer.setNamesrvAddr(consumerConfig.getNamesrvAddr());

        consumer.subscribe(topic, tag);

        // 开启内部类实现监听
        consumer.registerMessageListener(new MessageListenerConcurrently() {
            @Override
            public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs, ConsumeConcurrentlyContext context) {
                return DefaultConsumerConfigure.this.dealBody(msgs);
            }
        });

        consumer.start();

        log.info("rocketmq启动成功---------------------------------------");

    }

    // 处理body的业务
    public abstract ConsumeConcurrentlyStatus dealBody(List<MessageExt> msgs);

}

具体消息消费者类：

package sc.rocketmq.service;

import java.io.UnsupportedEncodingException;
import java.util.List;

import org.apache.rocketmq.client.consumer.listener.ConsumeConcurrentlyStatus;
import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.common.message.MessageExt;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationListener;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.event.ContextRefreshedEvent;

import sc.rocketmq.config.DefaultConsumerConfigure;

@Configuration
public class CustomConsumer extends DefaultConsumerConfigure implements ApplicationListener<ContextRefreshedEvent> {

    Logger log = LoggerFactory.getLogger(CustomConsumer.class);

    @Override
    public void onApplicationEvent(ContextRefreshedEvent arg0) {
        try {
            super.listener("t_TopicTest", "Tag1");
        } catch (MQClientException e) {
            log.error("消费者监听器启动失败", e);
        }

    }

    @Override
    public ConsumeConcurrentlyStatus dealBody(List<MessageExt> msgs) {
        int num = 1;
        log.info("进入");
        for (MessageExt msg : msgs) {
            log.info("第" + num + "次消息");
            try {
                String msgStr = new String(msg.getBody(), "utf-8");
                log.info(msgStr);
            } catch (UnsupportedEncodingException e) {
                log.error("body转字符串解析失败");
            }
        }
        return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
    }
}

这个CustomConsumer类实现了ApplicationListener，让他在启动的时候就开启执行DefaultConsumerConfigure的listener方法

5、新建springboot启动类RocketMqApplication.java

package sc.rocketmq;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class RocketMqApplication {

    public static void main(String[] args) {
        SpringApplication.run(RocketMqApplication.class, args);
    }

}

6、新建一个Controller，引入消息生产者

package sc.rocketmq.controller;

import org.apache.rocketmq.client.producer.DefaultMQProducer;
import org.apache.rocketmq.client.producer.SendCallback;
import org.apache.rocketmq.client.producer.SendResult;
import org.apache.rocketmq.common.message.Message;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import com.alibaba.fastjson.JSON;

import sc.rocketmq.service.CustomConsumer;

@RestController
public class ProducerController {

    Logger log = LoggerFactory.getLogger(CustomConsumer.class);

    @Autowired
    private DefaultMQProducer producer;

    // @Autowired
    // private TransactionMQProducer producer;

//    @Autowired
//    private TestTransactionListener testTransactionListener;

    @GetMapping("/msg/product")
    public void test(String info) throws Exception {
        Message message = new Message("TopicTest", "Tag1", "12345", "rocketmq测试成功".getBytes());
        // 这里用到了这个mq的异步处理，类似ajax，可以得到发送到mq的情况，并做相应的处理
        // 不过要注意的是这个是异步的
        producer.send(message, new SendCallback() {
            @Override
            public void onSuccess(SendResult sendResult) {
                log.info("传输成功");
                log.info(JSON.toJSONString(sendResult));
            }

            @Override
            public void onException(Throwable e) {
                log.error("传输失败", e);
            }
        });
    }

}

7、验证是否成功

访问http://127.0.0.1:8080/msg/product

可以看到controller产生消息，然后CustomConsumer类的dealBody方法消息消息。

源码：

https://gitee.com/hjj520/spring-cloud-2.x/tree/master/sc-apache-rocketmq

本文作者： java乐园

本文来自云栖社区合作伙伴“JAVA乐园”，了解相关信息可以关注“JAVA乐园”

Spring Cloud 2.x系列之整合rocketMQ

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