RabbitMQ 简使用案例

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第一步导入依赖：

<dependency>

            <groupId>com.rabbitmq</groupId>

            <artifactId>amqp-client</artifactId>

            <version>3.4.1</version>
</dependency>

第二步编写一个连接类获取MQ的连接：ConnectionUtil

package com.example.springboot_rabbitmq.util;

import com.rabbitmq.client.Connection;

import com.rabbitmq.client.ConnectionFactory;

public class ConnectionUtil {

    public static Connection getConnection() throws Exception {

        //定义连接工厂

        ConnectionFactory factory = new ConnectionFactory();

        //设置服务地址

        factory.setHost("localhost");

        //端口

        factory.setPort(5672);

        //设置账号信息，用户名、密码、vhost

        factory.setVirtualHost("/");

        factory.setUsername("guest");

        factory.setPassword("guest");

        // 通过工程获取连接

        Connection connection = factory.newConnection();

        if (connection.isOpen()){

            System.out.println("连接成功");

        }else{

            System.out.println("连接失败");

        }

        return connection;

    }

    public static void main(String[] args) {

        //测试连接

        try {

            System.out.println(ConnectionUtil.getConnection());

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

}

第三步：启动本地服务端

测试连接：

连接成功没毛病

下面使用浏览器访问：http://localhost:15672

window下安装RabbitMQ教程：https://www.cnblogs.com/nongzihong/p/11578255.html

第四步：生产者发送消息到队列

package com.example.springboot_rabbitmq.simple;

import com.example.springboot_rabbitmq.util.ConnectionUtil;

import com.rabbitmq.client.Channel;

import com.rabbitmq.client.Connection;

public class Send {

    private final static String QUEUE_NAME = "q_test_01";

    public static void main(String[] argv) throws Exception {

        // 获取到连接以及mq通道

        Connection connection = ConnectionUtil.getConnection();

        // 从连接中创建通道

        Channel channel = connection.createChannel();

        // 声明（创建）队列

        channel.queueDeclare(QUEUE_NAME, false, false, false, null);

        // 消息内容

        String message = "Hello World!";

        channel.basicPublish("", QUEUE_NAME, null, message.getBytes());

        System.out.println(" [x] Sent '" + message + "'");

        //关闭通道和连接

        channel.close();

        connection.close();

    }

}

管理工具中查看消息：

第五步：消费者从队列中获取消息

package com.example.springboot_rabbitmq.simple;

import com.example.springboot_rabbitmq.util.ConnectionUtil;

import com.rabbitmq.client.Channel;

import com.rabbitmq.client.Connection;

import com.rabbitmq.client.QueueingConsumer;

public class Recv {

    private final static String QUEUE_NAME = "q_test_01";

    public static void main(String[] argv) throws Exception {

        // 获取到连接以及mq通道

        Connection connection = ConnectionUtil.getConnection();

        // 从连接中创建通道

        Channel channel = connection.createChannel();

        // 声明队列

        channel.queueDeclare(QUEUE_NAME, false, false, false, null);

        // 定义队列的消费者

        QueueingConsumer consumer = new QueueingConsumer(channel);

        // 监听队列

        channel.basicConsume(QUEUE_NAME, 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 + "'");

        }

    }

}