RabbitMQ杂记1

引入依赖：

<dependency>
    <groupId>com.rabbitmq</groupId>
    <artifactId>amqp-client</artifactId>
    <version>3.4.1</version>
</dependency>

创建连接工具类

/**
 * 连接rabbitMQ的工具类，正式生产环境中不会用到
 * 仅测试MQ时使用，本项目以springboot的方式整合了rabbitMQ
 *
 * @author hetao
 * @Date 2019-03-03
 */
public class RabbitConnectUtils {
    private static final String HOST = "127.0.0.1";
    private static final String USERNAME = "admin";
    private static final String PASSWORD = "admin";
    private static final String V_HOST = "v_host";
    private static final Integer PORT = 5672;
    /**
     * 获取connection对象
     *
     * @return Connection
     */
    public static Connection getRabbitConnection() throws Exception {
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost(HOST);
        factory.setPort(PORT);
        factory.setUsername(USERNAME);
        factory.setPassword(PASSWORD);
        factory.setVirtualHost(V_HOST);
        return factory.newConnection();
    }

}

写一个controller用于发送消息：

@RestController
@RequestMapping("rabbit")
public class RabbitServiceController extends BaseController {
    private static  final String HELLO_QUEUE = "hello_queue";


    /**
     * netty服务器端的第一个实践
     * 相当于helloworld
     * @return
     */
    @RequestMapping("hello")
    public ResultMsgInfo netty1(String message){
        try{
            Connection connection = RabbitConnectUtils.getRabbitConnection();
            Channel channel = connection.createChannel();
            //声明队列
            channel.queueDeclare(HELLO_QUEUE,false,false,false,null);
            channel.basicPublish("",HELLO_QUEUE,null,message.getBytes());
            logger.info("发送消息到队列：{},消息内容：{}.",HELLO_QUEUE,message);
            channel.close();
            connection.close();
        }catch (Exception e){
            e.printStackTrace();
            return ResultMsgInfo.error();
        }
        return ResultMsgInfo.success();
    }
}

查看rabbitMQ管理界面：

发现队列已经被发布

队列消费：

将消费消息写到andromeda工程中，

/**
 * 简单直接的循环
 */
public void getRabbitMessage(){
    logger.info("消息监听器初始化成功");
    try{
        Connection connection = RabbitConnectUtils.getRabbitConnection();
        Channel channel = connection.createChannel();
        // 声明队列
        channel.queueDeclare(HELLO_QUEUE, false, false, false, null);

        // 定义队列的消费者
        QueueingConsumer consumer = new QueueingConsumer(channel);

        // 监听队列
        channel.basicConsume(HELLO_QUEUE, true, consumer);

        // 获取消息
        while (true) {
            QueueingConsumer.Delivery delivery = consumer.nextDelivery();
            String message = new String(delivery.getBody());
            System.out.println(" [x] Received '" + message + "'");
        }

    }catch (Exception e){
        e.printStackTrace();
    }
}

控制台打印：

[x] Received '我是rabbit直接队列' [x] Received '我是rabbit直接队列223'

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