SpringBoot整合ActiveMQ消息组件

1、ActiveMQ是Apache提供的开源组件，是基于JMS标准的实现组件。利用SpringBoot整合ActiveMQ组件，实现队列消息的发送与接收。修改pom.xml配置文件，追加spring-boot-starter-activemq依赖库。

<?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 
    https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.5.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <maven-jar-plugin.version>3.1.1</maven-jar-plugin.version>
    </properties>

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <!-- mysql驱动包 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <!-- druid连接池 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.10</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-cache</artifactId>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-ehcache</artifactId>
        </dependency>

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

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.yml</include>
                    <include>**/*.xml</include>
                    <include>**/*.p12</include>
                    <include>**/*.html</include>
                    <include>**/*.jpg</include>
                    <include>**/*.png</include>
                </includes>
            </resource>
        </resources>
    </build>

</project>

修改application.yml配置文件，进行ActiveMQ的配置，如下所示：

# 配置消息类型，true表示为topic消息，false表示Queue消息
spring.jms.pub-sub-domain=false
# 连接的用户名
spring.activemq.user=admin
# 密码
spring.activemq.password=admin
# 消息组件的连接主机信息
spring.activemq.broker-url=tcp://192.168.110.142:61616

定义消息消费监听类，如下所示：

package com.demo.consumer;

import org.springframework.jms.annotation.JmsListener;
import org.springframework.stereotype.Service;

@Service
public class MessageConsumer {

    /**
     * 
     * @param text
     */
    @JmsListener(destination = "msg.queue") // 定义消息监听队列
    public void receiveMessage(String text) {
        // 进行消息接受处理
        System.err.println("【*** 接受消息 ***】" + text);
    }
}

定义消息生产者业务类，如下所示：

package com.demo.producer;

import javax.jms.Queue;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jms.core.JmsMessagingTemplate;
import org.springframework.stereotype.Service;

/**
 * 
 * @author 消息发送
 *
 */
@Service
public class MessageProducer {

    // 消息发送模板
    @Autowired
    private JmsMessagingTemplate jmsMessagingTemplate;

    // 注入队列
    @Autowired
    private Queue queue;

    /**
     * 发送消息
     */
    public void send(String msg) {
        this.jmsMessagingTemplate.convertAndSend(this.queue, msg);
    }

}

定义JMS消息发送配置类，该类主要用于配置队列信息，如下所示：

package com.demo.config;

import javax.jms.Queue;

import org.apache.activemq.command.ActiveMQQueue;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.jms.annotation.EnableJms;

@Configuration
@EnableJms
public class ActiveMqConfig {

    @Bean
    public Queue queue() {
        ActiveMQQueue activeMQQueue = new ActiveMQQueue("msg.queue");
        return activeMQQueue;
    }
}

使用ActiveMQ实现了消息的发送与接收处理。每当有消息接收到时，都会自动执行MessageConsumer类，进行消息消费。

package com.demo.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.demo.producer.MessageProducer;

@Controller
public class ActiveMqController {

    @Autowired
    private MessageProducer messageProducer;

    @RequestMapping(value = "/messageProducer")
    @ResponseBody
    public void findAll() {
        for (int i = 0; i < 10000; i++) {
            messageProducer.send("active producer message : " + i);
        }
    }

}

在浏览器或者可以执行命令的地方执行，http://127.0.0.1:8080/messageProducer，可以在activemq的监控地址进行观察http://192.168.110.142:8161/admin/queues.jsp