虚拟主机，用于进行逻辑隔离，是最上层的路由，类似于redis的16个db,是一种逻辑上的隔离

一个virtualhost里面可以有若干个Exchange和Queue

同一个virtualhost里面不能有相同名称的Exchange和Queue

package com.dwz.rabbitmq.util;

import java.io.IOException;

import java.util.concurrent.TimeoutException;

import com.rabbitmq.client.Connection;

import com.rabbitmq.client.ConnectionFactory;

public class ConnectionUtils {

    /**

     *     获取MQ的连接

     * @return

     * @throws TimeoutException

     * @throws IOException

     */

    public static Connection getConnection() throws IOException, TimeoutException {

        //定义一个连接工厂

        ConnectionFactory factory = new ConnectionFactory();

        //设置服务地址

        factory.setHost("127.0.0.1");

        //设置AMQP端口号

        factory.setPort(5672);

        //vhost

        factory.setVirtualHost("/vhost_dwz");

        factory.setUsername("root_dwz");

        factory.setPassword("123456");

        //设置网络断开时的自动重连

        factory.setAutomaticRecoveryEnabled(true);

        //每3秒重连一次

        factory.setNetworkRecoveryInterval(3000);

        return factory.newConnection();

    }

}

package com.dwz.rabbitmq.simple;

import java.io.IOException;

import java.util.concurrent.TimeoutException;

import com.dwz.rabbitmq.util.ConnectionUtils;

import com.rabbitmq.client.Channel;

import com.rabbitmq.client.Connection;

public class Send {

    private static final String QUEUE_NAME = "test_simple_queue";

    public static void main(String[] args) throws IOException, TimeoutException {

        //获取一个连接

        Connection connection = ConnectionUtils.getConnection();

        //从连接中获取一个通道

        Channel channel = connection.createChannel();

        //创建队列声明

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

        String msg = "hello rabbitmq simple message!";

        //发布消息

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

        System.out.println("send msg--:" + msg);

        //关闭信道

        channel.close();
　　　　 //关闭连接

        connection.close();

    }

}

package com.dwz.rabbitmq.simple;

import java.io.IOException;

import java.util.concurrent.TimeoutException;

import com.dwz.rabbitmq.util.ConnectionUtils;

import com.rabbitmq.client.AMQP.BasicProperties;

import com.rabbitmq.client.Channel;

import com.rabbitmq.client.Connection;

import com.rabbitmq.client.DefaultConsumer;

import com.rabbitmq.client.Envelope;

public class Receive {

    private static final String QUEUE_NAME = "test_simple_queue";

    public static void main(String[] args) throws IOException, TimeoutException {

        //获取一个连接

        Connection connection = ConnectionUtils.getConnection();

        //从连接中获取一个通道

        Channel channel = connection.createChannel();

        //队列声明

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

        //定义消费者

        DefaultConsumer consumer = new DefaultConsumer(channel) {

            //自动接收消息

            @Override

            public void handleDelivery(String consumerTag, Envelope envelope, BasicProperties properties, byte[] body)

                    throws IOException {

                String msg = new String(body, "utf-8");

                System.out.println("consumer receive--:" + msg);

            }

        };

        //监听队列

        channel.basicConsume(QUEUE_NAME, consumer);

    }

}