说明

本篇是使用内存方式的ActiveMQ消息队列方案，不需要安装额外的软件，直接在程序里运行，不需要维护，适合小型的消息队列处理

实现

1、引入jar包

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-activemq</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.activemq</groupId>
            <artifactId>activemq-pool</artifactId>
        </dependency>

2、在项目启动类里添加JMS支持

@SpringBootApplication
@EnableJms
public class DemoApplication {

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

3、添加生产者

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

import javax.jms.Destination;

@Service
public class Producer {

    @Autowired
    private JmsMessagingTemplate jmsTemplate;

    // 发送消息，destination是发送到的队列，message是待发送的消息
    public void sendMessage(Destination destination, final Object message) {
        jmsTemplate.convertAndSend(destination, message);
    }

}

4、添加两个消费者

4.1 消费者1

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.jms.annotation.JmsListener;
import org.springframework.stereotype.Component;

@Component
public class Consumer1{

    private final Logger logger = LoggerFactory.getLogger(this.getClass());

    // 使用JmsListener配置消费者监听的队列，其中text是接收到的消息
    @JmsListener(destination = "message.queue")
    public void receiveQueue(String text) {
        logger.info("发送消息:"+text);
    }

}

4.2 消费者2

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.jms.annotation.JmsListener;
import org.springframework.stereotype.Component;

@Component
public class Consumer2 {

    private final Logger logger = LoggerFactory.getLogger(this.getClass());

    // 使用JmsListener配置消费者监听的队列，其中text是接收到的消息
    @JmsListener(destination = "log.queue")
    public void receiveQueue(String text) {
        logger.info("发送日志:"+text);
    }

}

5、添加测试类

import org.apache.activemq.command.ActiveMQQueue;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import javax.jms.Destination;

import static org.junit.Assert.*;

@RunWith(SpringRunner.class)
@SpringBootTest
public class ProducerTest {

    private final Logger logger = LoggerFactory.getLogger(this.getClass());

    @Autowired
    private Producer producer;

    @Test
    public void sendMessage() {

        Destination message = new ActiveMQQueue("message.queue");
        Destination log = new ActiveMQQueue("log.queue");

        producer.sendMessage(message, "生产者发送了消息");
        producer.sendMessage(log, "生产者发送了日志");

    }
}

其它说明

1、可以在配置文件添加连接池等，但是会报错没有研究
2、不能发送对象，需要转为String类型发送