图解

1、web端操作

1、新建3个队列

2、新建一个交换机

3、交换机绑定队列

这里的路由key是什么意思呢？留一个悬念

4、测试发送消息

发送消息前：

发送消息：

再次测试

经过多次测试发现了规律吗？

5、小结

#：任意级目录，任意目录什么意思呢？就是可以为空也可以多个 举例： .com.sky 或者 com.com.com.sky

*：一级目录，一级就是com。就没了

2、代码操作

生产者

package com.sky.rabbitmq.topics;

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;

/**
 * @author 尹稳健~
 * @version 1.0
 */
public class Producer {
    public static void main(String[] args) {
        ConnectionFactory connectionFactory = new ConnectionFactory();
        connectionFactory.setHost("localhost");
        connectionFactory.setPort(5672);
        connectionFactory.setUsername("admin");
        connectionFactory.setPassword("admin");
        connectionFactory.setVirtualHost("/");
        Connection connection = null;
        Channel channel = null;
        try {
            connection = connectionFactory.newConnection();
            channel = connection.createChannel();
            // 消息
            String message = "谢谢你发消息给我";
            // 交换机名字
            String exchange_name = "topic-exchange";
            // 路由key
            String routeKey = "com.user.sky";
            // 交换机类型
            String type = "topic";
            // 发送消息给中间件rabbitmq-server
            // @params1: 交换机exchange
            // @params2: 队列名称/routingkey
            // @params3: 属性配置
            // @params4: 发送消息的内容
            channel.basicPublish(exchange_name,routeKey,null,message.getBytes());
            System.out.println("消息发送成功!");
        } catch (Exception e) {
            e.printStackTrace();
            System.out.println("发送消息出现异常...");
        }  finally {
            if (channel != null && channel.isOpen()) {
                try {
                    channel.close();
                } catch (Exception ex) {
                    ex.printStackTrace();
                }
            }
            if (connection != null) {
                try {
                    connection.close();
                } catch (Exception ex) {
                    ex.printStackTrace();
                }
            }
        }
    }
}

消费者

package com.sky.rabbitmq.topics;

import com.rabbitmq.client.*;

import java.io.IOException;

/**
 * @author 尹稳健~
 * @version 1.0
 */
public class Consumer {
    private static Runnable runnable = new Runnable() {
        public void run() {
            ConnectionFactory connectionFactory = new ConnectionFactory();
            connectionFactory.setHost("localhost");
            connectionFactory.setPort(5672);
            connectionFactory.setUsername("admin");
            connectionFactory.setPassword("admin");
            connectionFactory.setVirtualHost("/");
            //获取队列的名称
            final String queueName = Thread.currentThread().getName();
            Connection connection = null;
            Channel channel = null;
            try {
                connection = connectionFactory.newConnection();
                channel = connection.createChannel();
                // 交换机名字
                String exchange_name = "topic-exchange";
                // 路由key
                String routeKey = "";
                // 交换机类型
                String type = "topic";
                // 6： 定义接受消息的回调
                channel.basicConsume(queueName, true, new DeliverCallback() {
                    public void handle(String s, Delivery delivery) throws IOException {
                        System.out.println(queueName + "：收到消息是：" + new String(delivery.getBody(), "UTF-8"));
                    }
                }, new CancelCallback() {
                    public void handle(String s) throws IOException {
                        System.out.println("异常");
                    }
                });
                System.out.println(queueName + "：开始接受消息");
                System.in.read();
            } catch (Exception e) {
                e.printStackTrace();
                System.out.println("发送消息出现异常...");
            } finally {
                if (channel != null && channel.isOpen()) {
                    try {
                        channel.close();
                    } catch (Exception ex) {
                        ex.printStackTrace();
                    }
                }
                if (connection != null) {
                    try {
                        connection.close();
                    } catch (Exception ex) {
                        ex.printStackTrace();
                    }
                }
            }
        }
    };

    public static void main(String[] args) {
        new Thread(runnable,"queue1").start();
        new Thread(runnable,"queue2").start();
        new Thread(runnable,"queue3").start();
    }
}